CN114028292A - Shampoo containing plant composite anti-dandruff agent and preparation method thereof - Google Patents

Abstract

The invention relates to shampoo containing a plant composite anti-dandruff agent and a preparation method thereof. The shampoo comprises a plant composite anti-dandruff agent, wherein the plant composite anti-dandruff agent comprises 35-65% of a common cnidium fruit extract, 20-50% of a camellia seed extract, 15-35% of a ginger root extract, 10-20% of a coptis chinensis extract, 5-15% of a grape seed extract and 1-10% of a centella extract. In this embodiment, the plant composite anti-dandruff agent is applied to shampoo, wherein the addition amount of the plant composite anti-dandruff agent in the shampoo is 3% -7%, under the synergistic effect of various plant extracts, the plant composite anti-dandruff agent has a broad-spectrum antibacterial ring, can efficiently remove dandruff and relieve itching, is milder to scalp compared with a chemical anti-dandruff agent, and can moisten scalp, repair damaged scalp barrier and keep scalp health.

Description

Shampoo containing plant composite anti-dandruff agent and preparation method thereof

Technical Field

The invention relates to the technical field of hair care products, in particular to shampoo containing a plant composite anti-dandruff agent and a preparation method thereof.

Background

At present, chemical anti-dandruff agents are commonly used in anti-dandruff shampoos in the market, and although the effect of inhibiting malassezia is strong by adopting the chemical anti-dandruff agents, the anti-dandruff agents have high irritation to scalps, even can cause allergic reactions of the scalps, and have certain damage to the scalps after long-term use.

In addition, although the anti-dandruff shampoo on the market adopts plant extracts as the anti-dandruff agent, the anti-dandruff effect is not obvious enough, and the anti-dandruff shampoo is often compounded with a chemical anti-dandruff agent, so that certain irritation is caused to the scalp, and the health of the scalp is damaged.

Disclosure of Invention

Therefore, in order to solve the problems in the prior art, a shampoo containing a plant composite anti-dandruff agent and a preparation method thereof are needed.

A shampoo containing a plant composite anti-dandruff agent comprises the plant composite anti-dandruff agent, wherein the plant composite anti-dandruff agent comprises 35% -65% of a fructus cnidii extract, 20% -50% of a camellia seed extract, 15% -35% of a ginger root extract, 10% -20% of a coptis chinensis extract, 5% -15% of a grape seed extract and 1% -10% of a centella extract.

In one embodiment, the botanical composite anti-dandruff agent comprises 38% -60% of fructus cnidii extract, 22% -45% of camellia seed extract, 18% -30% of ginger root extract, 12% -18% of coptis chinensis extract, 7% -14% of grape seed extract and 3% -9% of centella asiatica extract.

In one embodiment, the preparation method of the plant composite antidandruff agent comprises the following steps:

s1: weighing the common cnidium fruit extract, the camellia seed extract, the ginger extract, the coptis extract, the grape seed extract and the centella extract according to a weight ratio;

s2: adding 10 times of 70% ethanol into the weighed raw material components, decocting and refluxing for 3 times, each time for 1h, filtering, and combining the 3 times of filtrates;

s3: putting the filtrate obtained in the step S2 into a freezing centrifuge for centrifugation, and taking supernatant, wherein the rotating speed of the freezing centrifuge is 5000 rpm/min;

s4: recovering ethanol in the supernatant, making into fluid extract, and diluting with water to obtain plant compound dandruff removing agent with concentration of 1 g/L.

In one embodiment, the addition amount of the plant composite antidandruff agent in the shampoo is 3% -7%.

In one embodiment, the shampoo containing the plant composite anti-dandruff agent further comprises a surfactant, a pearling agent, a conditioning agent, a thickening agent, a preservative, a fragrance and deionized water.

In one embodiment, the surfactant comprises sodium laureth sulfate 10% -20%, cocamidopropyl betaine 5% -10%, and octyl/decyl glucoside 1% -5%,

the pearling agent comprises 1 to 3 percent of ethylene glycol distearate,

the conditioner comprises 1 to 5 percent of polydimethylsiloxane and 0.1 to 0.8 percent of guar gum hydroxypropyl trimethyl ammonium chloride,

the thickening agent comprises 0.5-2.5% of cocamide MEA and 0.1-0.5% of acrylic acid (ester)/C10-30 alkanol acrylate cross-linked polymer,

the preservative comprises 0.1 to 0.2 percent of methylparaben, 0.3 to 0.6 percent of phenoxyethanol and 0.1 to 0.6 percent of chlorphenesin,

the aromatic comprises 0.2-0.8% of essence.

In one embodiment, the plant composite anti-dandruff agent comprises 6% of plant composite anti-dandruff agent, 15% of sodium laureth sulfate, 8% of cocamidopropyl betaine, 3% of octyl/decyl glucoside, 2% of ethylene glycol distearate, 2% of polydimethylsiloxane, 0.3% of guar hydroxypropyltrimonium chloride, 1.5% of cocamide MEA (membrane electrode assembly), 0.2% of acrylic acid/C10-30 alkanol acrylate cross-linked polymer, 0.2% of methylparaben, 0.6% of phenoxyethanol, 0.2% of chlorphenesin, 0.5% of essence and the balance of deionized water.

A preparation method of shampoo containing plant composite anti-dandruff agent comprises the following steps:

s1: adding deionized water into a container, dispersing the acrylic acid (ester)/C10-30 alkanol acrylate crosslinked polymer with water in advance, adding the dispersed polymer into the container, uniformly stirring, and heating to 80-85 ℃;

s2: adding the sodium laureth sulfate, the cocamide MEA and the methylparaben, keeping the temperature between 80 and 85 ℃, and stirring until the sodium laureth sulfate, the cocamide MEA and the methylparaben are completely dissolved;

s3: pre-dispersing the guar gum hydroxypropyl trimethyl ammonium chloride with water, adding the guar gum hydroxypropyl trimethyl ammonium chloride into a container, and stirring until the guar gum hydroxypropyl trimethyl ammonium chloride is completely dissolved;

s4: cooling to 55-60 ℃, adding the cocamidopropyl betaine and the octyl/decyl glucoside, and uniformly stirring;

s5: cooling to 45 ℃, adding the polydimethylsiloxane, and rapidly stirring until the mixture is completely uniform;

s6: adding the ethylene glycol distearate, the phenoxyethanol, the chlorphenesin, the essence, the plant composite anti-dandruff agent and the balance of deionized water, and thoroughly and uniformly stirring.

The shampoo containing the plant composite anti-dandruff agent comprises the plant composite anti-dandruff agent, a surfactant, a pearling agent, a conditioner, a thickening agent, a preservative, an aromatic and deionized water, wherein the plant composite anti-dandruff agent comprises a common cnidium fruit extract, a camellia seed extract, a ginger extract, a coptis chinensis extract, a grape seed extract and a centella extract.

According to modern pharmacological research, the fructus cnidii extract has the effects of dispelling wind, eliminating dampness, killing parasites and relieving itching, and has stronger malassezia inhibition and itching relieving effects in the embodiment.

The camellia seed extract has good antibacterial and anti-allergic activities, has good activity effects of emulsification, foaming, dispersion, permeation, lubrication and the like when being used in shampoo, also has the effects of diminishing inflammation, easing pain, sterilizing, relieving itching and the like, and has good inhibition effect on malassezia furfur.

The ginger extract has the effects of inhibiting and killing bacteria, resisting allergy and oxidation, and can promote blood circulation, accelerate scalp metabolism, nourish hair, dredge hair follicle, deeply clean scalp and stimulate hair growth in shampoo.

The grape seed extract contains a large amount of active substances, such as phenolic compounds, fatty acids, vitamins, phytosterol and the like, and the substances have multiple active functions and can play roles in resisting oxidation, regulating and controlling cell cycle, diminishing inflammation, inhibiting bacteria, preventing alopecia and nourishing scalp.

The Coptidis rhizoma extract has antibacterial and anti-inflammatory effects.

The centella asiatica extract is rich in various active ingredients, has the effects of resisting bacteria and diminishing inflammation, providing nutrition, improving blood circulation of capillaries and the like, is low in irritation and mild in action, has certain effects of removing dandruff, preventing alopecia and improving hair quality, and has good development prospect.

In the embodiment, the plant composite anti-dandruff agent is applied to shampoo, has a broad-spectrum antibacterial ring under the synergistic effect of various plant extracts, can efficiently remove dandruff and relieve itching, is milder to scalp compared with a chemical anti-dandruff agent, and can moisten scalp, repair damaged scalp barrier and keep scalp healthy; in addition, the preparation method in the embodiment is simple, raw materials are heated uniformly in the production process, and the obtained product has stable performance and wider applicability.

Detailed Description

The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

A shampoo containing a plant composite anti-dandruff agent comprises the plant composite anti-dandruff agent, wherein the plant composite anti-dandruff agent comprises a fructus cnidii extract, a camellia seed extract, a ginger root extract, a coptis root extract, a grape seed extract and a centella asiatica extract, and the weight ratio of the fructus cnidii extract, the camellia seed extract, the ginger root extract, the coptis root extract, the grape seed extract and the centella asiatica extract is 38:22:18:12:7: 3.

Further, the preparation method of the plant composite anti-dandruff agent comprises the following steps:

s1: weighing the common cnidium fruit extract, the camellia seed extract, the ginger extract, the coptis extract, the grape seed extract and the centella extract according to a weight ratio;

s2: adding 10 times of 70% ethanol into the weighed raw material components, decocting and refluxing for 3 times, each time for 1h, filtering, and combining the 3 times of filtrates;

s3: putting the filtrate obtained in the step S2 into a freezing centrifuge for centrifugation, and taking supernatant, wherein the rotating speed of the freezing centrifuge is 5000 rpm/min;

s4: recovering ethanol in the supernatant, making into fluid extract, and diluting with water to obtain plant compound dandruff removing agent with concentration of 1 g/L.

Further, the prepared plant composite anti-dandruff agent is applied to shampoo, and the shampoo containing the plant composite anti-dandruff agent comprises 6% of the plant composite anti-dandruff agent, 15% of sodium laureth sulfate, 8% of cocamidopropyl betaine, 3% of octyl/decyl glucoside, 2% of ethylene glycol distearate, 2% of polydimethylsiloxane, 0.3% of guar hydroxypropyltrimonium chloride, 1.5% of cocamide MEA (MEA), 0.2% of acrylic acid/C10-30 alkanol acrylate cross-linked polymer, 0.2% of methyl hydroxybenzoate, 0.6% of phenoxyethanol, 0.2% of chlorphenesin, 0.5% of essence and the balance of deionized water.

Further, the preparation method of the shampoo containing the plant composite anti-dandruff agent comprises the following steps:

s1: adding deionized water into a container, dispersing the acrylic acid (ester)/C10-30 alkanol acrylate crosslinked polymer with water in advance, adding the dispersed polymer into the container, uniformly stirring, and heating to 80-85 ℃;

s2: adding the sodium laureth sulfate, the cocamide MEA and the methylparaben, keeping the temperature between 80 and 85 ℃, and stirring until the sodium laureth sulfate, the cocamide MEA and the methylparaben are completely dissolved;

s3: pre-dispersing the guar gum hydroxypropyl trimethyl ammonium chloride with water, adding the guar gum hydroxypropyl trimethyl ammonium chloride into a container, and stirring until the guar gum hydroxypropyl trimethyl ammonium chloride is completely dissolved;

s4: cooling to 55-60 ℃, adding the cocamidopropyl betaine and the octyl/decyl glucoside, and uniformly stirring;

s5: cooling to 45 ℃, adding the polydimethylsiloxane, and rapidly stirring until the mixture is completely uniform;

s6: adding the ethylene glycol distearate, the phenoxyethanol, the chlorphenesin, the essence, the plant composite anti-dandruff agent and the balance of deionized water, and thoroughly and uniformly stirring.

Example 2

This example differs from example 1 in that the weight ratio of the cnidium monnieri extract, camellia seed extract, ginger root extract, coptis chinensis extract, grape seed extract and centella asiatica extract was 35:20:15:10:5: 1.

Example 3

This example differs from example 1 in that the weight ratio of the cnidium monnieri extract, camellia seed extract, ginger root extract, coptis chinensis extract, grape seed extract and centella asiatica extract was 65:50:35:20:15: 10.

Example 4

This example differs from example 1 in that the weight ratio of the cnidium monnieri extract, camellia seed extract, ginger root extract, coptis chinensis extract, grape seed extract and centella asiatica extract was 46:32:20:15:10: 6.

Example 5

This example differs from example 1 in that the weight ratio of the cnidium monnieri extract, camellia seed extract, ginger root extract, coptis chinensis extract, grape seed extract and centella asiatica extract was 54:38:26:16:12: 8.

Example 6

This example differs from example 1 in that the weight ratio of the cnidium monnieri extract, camellia seed extract, ginger root extract, coptis chinensis extract, grape seed extract and centella asiatica extract was 60:45:30:18:14: 9.

Example 7

This example is different from example 1 in that the amount of the plant composite antidandruff agent added to shampoo was 3%.

Example 8

This example is different from example 1 in that the amount of the plant composite antidandruff agent added to shampoo is 5%.

Example 9

This example is different from example 1 in that the amount of the plant composite antidandruff agent added to shampoo was 7%.

Example 10

The difference between this example and example 1 is that the amount of the plant composite antidandruff agent added to shampoo is 10%.

Example 11

This example differs from example 1 in that the shampoo containing the plant complex antidandruff agent comprises 6% of the plant complex antidandruff agent, 10% of sodium laureth sulfate, 5% of cocamidopropyl betaine, 1% of octyl/decyl glucoside, 1% of ethylene glycol distearate, 1% of polydimethylsiloxane, 0.1% of guar hydroxypropyltrimethylammonium chloride, 0.5% of cocamide MEA, 0.1% of acrylic acid/C10-30 alkanol acrylate crosspolymer, 0.1% of methylparaben, 0.3% of phenoxyethanol, 0.1% of chlorphenesin, 0.2% of perfume and the balance of deionized water.

Example 12

This example differs from example 1 in that the shampoo containing the plant complex antidandruff agent comprises 6% of the plant complex antidandruff agent, 20% of sodium laureth sulfate, 10% of cocamidopropyl betaine, 5% of octyl/decyl glucoside, 3% of ethylene glycol distearate, 5% of polydimethylsiloxane, 0.8% of guar hydroxypropyltrimethylammonium chloride, 2.5% of cocamide MEA, 0.5% of acrylic acid/C10-30 alkanol acrylate crosspolymer, 0.2% of methylparaben, 0.6% of phenoxyethanol, 0.6% of chlorphenesin, 0.8% of perfume and the balance of deionized water.

Further, the preparation method of the shampoo containing the plant composite anti-dandruff agent comprises the following steps:

s1: adding deionized water into a container, dispersing the acrylic acid (ester)/C10-30 alkanol acrylate crosslinked polymer with water in advance, adding into the container, stirring uniformly, and heating to 85 ℃;

s2: adding sodium laureth sulfate, cocamide MEA, and methyl hydroxybenzoate, maintaining at 85 deg.C, and stirring to dissolve completely;

s3: dispersing guar gum hydroxypropyl trimethyl ammonium chloride with water in advance, adding the dispersed guar gum hydroxypropyl trimethyl ammonium chloride into a container, and stirring until the guar gum hydroxypropyl trimethyl ammonium chloride is completely dissolved;

s4: cooling to 60 deg.C, adding cocamidopropyl betaine and octyl/decyl glucoside, and stirring;

s5: cooling to 45 ℃, adding polydimethylsiloxane, and rapidly stirring until the mixture is completely uniform;

s6: adding the rest components, and stirring thoroughly.

Comparative example 1

The comparative example is different from example 1 in that the amount of the plant composite antidandruff agent added to shampoo is 0.5%.

Comparative example 2

The comparative example is different from example 1 in that the amount of the plant composite antidandruff agent added to shampoo is 15%.

Comparative example 3

This comparative example is different from example 1 in that the plant composite antidandruff agent was not added to the shampoo.

Comparative example 4:

the comparative example differs from example 1 in the components of the plant composite anti-dandruff agent comprising cnidium monnieri fruit extract, ginger extract, coptis chinensis extract, grape seed extract and centella asiatica extract in a weight ratio of 38:18:12:7: 3.

The preparation method of the plant composite anti-dandruff agent and the shampoo of the comparative example is the same as that of example 1.

Comparative example 5:

the comparative example differs from example 1 in the components of the botanical composite anti-dandruff agent, which includes camellia seed extract, ginger extract, coptis extract, grape seed extract and centella asiatica extract in a weight ratio of 22:18:12:7: 3.

The preparation method of the plant composite anti-dandruff agent and the shampoo of the comparative example is the same as that of example 1.

Comparative example 6:

the comparative example is different from example 1 in the components of the plant composite anti-dandruff agent comprising cnidium monnieri fruit extract, camellia seed extract, ginger extract, coptis chinensis extract and centella asiatica extract in a weight ratio of 38:22:18:12: 3.

The preparation method of the plant composite anti-dandruff agent and the shampoo of the comparative example is the same as that of example 1.

(I) bacteriostatic test

Malassezia furfur is diluted to 1.0-9.0 x 106cfu/ml of bacterial suspension by using normal saline, then 1ml of bacterial suspension is taken out and coated in a culture medium, a filter paper is clamped by using tweezers to dip 0.02g of a sample to be detected, a plate is covered, the culture plate is placed in a constant temperature incubator at 33 ℃ for 7 days, the diameter of a bacteriostatic circle is measured, and the result is shown in Table 1:

TABLE 1

Sample to be tested	Diameter of bacteriostatic circle (mm)
		Example 1	25.3
Example 2	21.5
		Example 3	22.6
Example 4	24.0
		Example 5	23.9
Example 6	22.4
		Example 7	20.8
Example 8	24.3
		Example 9	23.5
Example 10	22.8
		Example 11	21.3
Example 12	21.9
		Comparative example 1	18.5
Comparative example 2	20.7
		Comparative example 3	＜1
Comparative example 4	15.2
		Comparative example 5	14.3
Comparative example 6	14.7

As can be seen from table 1, the raw material ratio of the plant composite anti-dandruff agent in examples 2 to 6 is significantly different from that in example 1, and the bacteriostatic effect is significantly reduced, so that when the weight ratio of the cnidium monnieri fruit extract, the camellia seed extract, the ginger root extract, the coptis chinensis extract, the grape seed extract and the centella asiatica extract is 38:22:18:12:7:3, a better bacteriostatic effect can be achieved.

Secondly, compared with examples 7-10 and comparative examples 1-2, the plant composite anti-dandruff agent in example 1 has the advantages that the higher the proportion of the plant composite anti-dandruff agent added into the shampoo is, the more obvious the antibacterial effect is, when the proportion of the plant composite anti-dandruff agent added is more than 6%, the antibacterial effect tends to be reduced on the contrary, and the shampoo in comparative example 3 has no plant composite anti-dandruff agent added and has no or extremely weak antibacterial effect, so when the plant composite anti-dandruff agent is added in 6%, the optimal antibacterial effect can be achieved.

Finally, the plant composite anti-dandruff agent in the comparative example 4 lacks the camellia seed extract compared with the example 1, the plant composite anti-dandruff agent in the comparative example 5 lacks the cnidium fruit extract compared with the example 1, and the plant composite anti-dandruff agent in the comparative example 6 lacks the grape seed extract compared with the example 1, and the results show that the bacteriostatic effect of the comparative examples 4-6 is obviously insufficient, which shows that the plant composite anti-dandruff agent consisting of the cnidium fruit extract, the camellia seed extract, the ginger extract, the coptis root extract, the grape seed extract and the centella asiatica extract can achieve a synergistic bacteriostatic effect.

In summary, when the weight ratio of the fructus cnidii extract, the camellia seed extract, the ginger root extract, the coptis root extract, the grape seed extract and the centella asiatica extract is 38:22:18:12:7:3, and the addition amount of the plant composite anti-dandruff agent in the shampoo is 6%, the bacteriostatic effect is most obvious.

(II) test of anti-dandruff effect on human body

420 volunteers aged 18-55 years, of which 210 men and 210 women, all of whom had symptoms of dandruff and itching, moderate or above.

20 people in each group are tried, the age, the sex and the degree of scurf and head itch are uniformly distributed, the hair washing period in the test period is 1 time in 2 days, the dosage of the shampoo is 5-10 mL each time, the water is flushed after the hair is rubbed for 2min each time, and the trial time is 1 month. The results of the experience effect of the volunteers recovered by statistics are shown in table 2:

TABLE 2

Among them, very satisfactory: no scurf and itching of the head; and (3) satisfaction: indicating occasional dandruff, no head itching; is barely accepted: symptoms indicative of less dandruff or itching of the head; very unsatisfactory: indicating a large amount of dandruff and itching of the head.

As can be seen from table 2, most of the volunteers were satisfied with the use effect of example 1, while the use effect of most of the volunteers was not satisfactory without the shampoo containing the plant compound anti-dandruff agent.

From the above tests, in the embodiment, the plant composite anti-dandruff agent is applied to shampoo, has a broad-spectrum antibacterial zone under the synergistic effect of various plant extracts, can efficiently remove dandruff and relieve itching, is milder to scalp compared with a chemical anti-dandruff agent, can moisten scalp, repair damaged scalp barriers, keep scalp health state, and can be favored by consumers.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (8)

1. The shampoo containing the plant composite anti-dandruff agent is characterized by comprising 35% -65% of a fructus cnidii extract, 20% -50% of a camellia seed extract, 15% -35% of a ginger root extract, 10% -20% of a coptis chinensis extract, 5% -15% of a grape seed extract and 1% -10% of a centella extract.

2. The shampoo containing the plant composite anti-dandruff agent as claimed in claim 1, wherein the plant composite anti-dandruff agent comprises 38% -60% of fructus cnidii extract, 22% -45% of camellia seed extract, 18% -30% of ginger root extract, 12% -18% of coptis chinensis extract, 7% -14% of grape seed extract and 3% -9% of centella asiatica extract.

3. The shampoo containing the plant composite anti-dandruff agent according to claim 1 or 2, wherein the preparation method of the plant composite anti-dandruff agent comprises the following steps:

s1: weighing the common cnidium fruit extract, the camellia seed extract, the ginger extract, the coptis extract, the grape seed extract and the centella extract according to a weight ratio;

s2: adding 10 times of 70% ethanol into the weighed raw material components, decocting and refluxing for 3 times, each time for 1h, filtering, and combining the 3 times of filtrates;

s3: putting the filtrate obtained in the step S2 into a freezing centrifuge for centrifugation, and taking supernatant, wherein the rotating speed of the freezing centrifuge is 5000 rpm/min;

s4: recovering ethanol in the supernatant, making into fluid extract, and diluting with water to obtain plant compound dandruff removing agent with concentration of 1 g/L.

4. The shampoo containing the plant composite anti-dandruff agent according to claim 3, wherein the addition amount of the plant composite anti-dandruff agent in the shampoo is 3% -7%.

5. The shampoo containing plant composite anti-dandruff agent according to claim 4, wherein the shampoo containing plant composite anti-dandruff agent further comprises a surfactant, a pearling agent, a conditioner, a thickener, a preservative, a fragrance and deionized water.

6. The shampoo containing plant composite antidandruff agent according to claim 5, characterized in that the surfactant comprises 10% -20% of sodium laureth sulfate, 5% -10% of cocamidopropyl betaine and 1% -5% of octyl/decyl glucoside,

the pearling agent comprises 1 to 3 percent of ethylene glycol distearate,

the conditioner comprises 1 to 5 percent of polydimethylsiloxane and 0.1 to 0.8 percent of guar gum hydroxypropyl trimethyl ammonium chloride,

the thickening agent comprises 0.5-2.5% of cocamide MEA and 0.1-0.5% of acrylic acid (ester)/C10-30 alkanol acrylate cross-linked polymer,

the preservative comprises 0.1 to 0.2 percent of methylparaben, 0.3 to 0.6 percent of phenoxyethanol and 0.1 to 0.6 percent of chlorphenesin,

the aromatic comprises 0.2-0.8% of essence.

7. The shampoo containing plant composite antidandruff agent according to claim 6, which comprises 6% of the plant composite antidandruff agent, 15% of sodium laureth sulfate, 8% of cocamidopropyl betaine, 3% of octyl/decyl glucoside, 2% of ethylene glycol distearate, 2% of polydimethylsiloxane, 0.3% of guar hydroxypropyltrimethylammonium chloride, 1.5% of cocamide MEA, 0.2% of acrylic acid/C10-30 alkanol acrylate crosspolymer, 0.2% of methyl hydroxybenzoate, 0.6% of phenoxyethanol, 0.2% of chlorphenesin, 0.5% of essence and the balance of deionized water.

8. The preparation method of the shampoo containing the plant composite anti-dandruff agent according to claim 7, which is characterized by comprising the following steps:

s1: adding deionized water into a container, dispersing the acrylic acid (ester)/C10-30 alkanol acrylate crosslinked polymer with water in advance, adding the dispersed polymer into the container, uniformly stirring, and heating to 80-85 ℃;

s2: adding the sodium laureth sulfate, the cocamide MEA and the methylparaben, keeping the temperature between 80 and 85 ℃, and stirring until the sodium laureth sulfate, the cocamide MEA and the methylparaben are completely dissolved;

s3: pre-dispersing the guar gum hydroxypropyl trimethyl ammonium chloride with water, adding the guar gum hydroxypropyl trimethyl ammonium chloride into a container, and stirring until the guar gum hydroxypropyl trimethyl ammonium chloride is completely dissolved;

s4: cooling to 55-60 ℃, adding the cocamidopropyl betaine and the octyl/decyl glucoside, and uniformly stirring;

s5: cooling to 45 ℃, adding the polydimethylsiloxane, and rapidly stirring until the mixture is completely uniform;

s6: adding the ethylene glycol distearate, the phenoxyethanol, the chlorphenesin, the essence, the plant composite anti-dandruff agent and the balance of deionized water, and thoroughly and uniformly stirring.