KR20180065322A - Skin whitening and sunscreen composition comprising nano materials and chinese medicine extract - Google Patents

Abstract

Provided is a skin-whitening and sun-blocking composition containing nanomaterials and a Chinese medicine extract. The nanomaterial comprises nanocrystalline cellulose or a nanocrystalline cellulose-fullerene particle mixture. The Chinese herb extract include a rose extract, a foxglove extract, a paeonia extract, a licorice extract, menthol, and water, and the content of the nanomaterial is 4-7% by weight. The total content of the rose extract, the foxglove extract, the paeonia extract, the licorice extract, menthol, and water is 6-12 wt%.

Description

TECHNICAL FIELD The present invention relates to a skin whitening and sunscreen composition containing nanomaterials and Chinese medicine extracts,

FIELD OF THE INVENTION The present invention relates to the skin-care field, and in particular to skin-whitening and sunscreen compositions containing nanocrystalline cellulose (NCC) and Chinese herbal extracts.

Skin-whitening and sunblocking are very popular for alleviating or eliminating skin problems. However, most skin-whitening and sunscreen products contain heavy metal or fluorescent powder components. For example, most skin-whitening and sunscreen ingredients contain titanium dioxide (TiO ₂ ). Chinese patent publication No. CN102076317A describes a cosmetic product containing titanium dioxide. Although titanium dioxide has excellent effects on skin-whitening, sunlight blocking and UV protection, titanium dioxide may appear very white due to ultraviolet (UV) reflection, and when titanium dioxide is used, After the remaining skin-whitening and sunscreen ingredients are washed away, the skin returns to its original color. Moreover, when such skin-whitening and sunscreen ingredients are used for extended periods of time, they may cause some harm to the skin. In addition, skin-whitening and sunscreen products containing titanium dioxide make skin color particularly uncomfortable and affect skin-whitening and sunscreen effects. That is, there is a need for a skin-whitening and sunscreen ingredient that is capable of replacing titanium dioxide and has little or no harm to the skin.

In addition, the nanocrystalline cellulose is a highly effective antioxidant that can prevent human aging. Such super-strong antioxidant compounds can be used not only to improve human health but also as anti-aging products.

It is an object of the present invention to provide skin-whitening and sunscreen compositions which fully utilize the beneficial aspects of the antioxidant function of nanocrystalline cellulose and of natural, nontoxic, healthy traditional Chinese medicines.

According to an aspect of the present invention there is provided a skin-whitening and sunscreen composition comprising a nanomaterial and a Chinese herbal extract, wherein the nanomaterial comprises nanocrystalline cellulose or nanocrystalline cellulose-fullerene particle mixture; Wherein the Chinese herbal extract comprises Rose extract, Rehmannia glutinosa Libosch extract, Red peony extract, Licorice extract, menthol and water, the content of the nanomaterial is 4-7% by weight, The total content of the rose extract, the hibiscus extract, the herbal extract, the licorice extract and the menthol is 6 to 12% by weight.

The beneficial effect of the present invention is that nanomaterials, i. E. Nanocrystalline cellulose, have the advantage of avoiding skin oxidation and also have the advantage of skin absorption because of the relatively small particle size of the nanomaterials.

In addition, by using traditional Chinese medicines for skin-whitening and sunscreen interception, it is possible to penetrate nutrients into the dermis layer, and to moisturize, moisturize, skin-whiten and block sunlight, remove spots, prevent wrinkles, Extraction, acne removal, and the like. Moreover, the Chinese herbal ingredient has a skin-whitening and sunscreen effect that makes the skin appear more natural, and is beneficial to skin health even after prolonged use.

According to an aspect of the present invention there is provided a skin-whitening and sunscreen composition comprising a nanomaterial and a Chinese herbal extract, wherein the nanomaterial comprises nanocrystalline cellulose or nanocrystalline cellulose-fullerene particle mixture; The Chinese herbal extract may be selected from the group consisting of rose extract, rhizome extract, chrysanthemum extract, licorice extract, menthol and water, and the content of the nanomaterial is 4-7 wt% The total content of licorice extract and menthol is 6-12 wt%.

In addition, the nanocrystalline cellulose (NCC) is a highly effective antioxidant that can prevent human aging. Such super-strong antioxidant compounds not only improve human health but also can be used in anti-aging products. In addition, the nanocrystalline cellulose has a better anti-UV effect and contributes to the removal of UV hazards to the skin after prolonged use.

The present invention may include only nanocrystalline cellulose and the NCC may be combined with fullerene particles to form a mixture of NCC-fullerene particles, which further enhances the effect of nanocrystalline cellulose. This mixture is called a bucky ball and is called a "nano vacuum cleaner", which absorbs and neutralizes free radicals harmful to the human body, thereby improving skin and reducing skin harmfulness .

The NCC-fullerene particle mixture can be formed using various methods, and any technique that is already known or can be developed in the future can be employed in the present invention to produce the mixture. The method of preparing the mixture is not a subject of discussion of the present invention and will not be further described.

According to an embodiment of the present invention, the Chinese herbal extract includes roses extract, hibiscus extract, chrysanthemum extract and licorice extract, and the total content of the extracts is 6-12 wt% of the total weight.

According to the first through ninth embodiments of the present invention, the content of the nanocrystalline cellulose-fullerene particle mixture ranges from 1 wt% to 9 wt%, respectively, and in each embodiment the nanocrystalline cellulose- The content of the mixture was gradually increased by 1 weight%. Furthermore, in the first to ninth embodiments, the total content of the rose extract, the horseradish extract, the herbal extract, the licorice extract and the menthol is 6% by weight, and the particle size of the nanocrystalline cellulose is 70 nm- 80 nm. ≪ / RTI >

The nanocrystalline cellulose obtained by hydrolyzing plant fibers contained in cotton, hemp and wood pulp plates to an acid has a length of 150 nm to 300 nm, a diameter of 30 nm to 100 nm, and a degree of polymerization of 160 to 180 Nanoparticles, in embodiments of the present invention, are particles having a length of 200 nm and a diameter of 70-80 nm. The above example not only has a relatively better effect, but also can effectively control costs.

Table 1 below shows a table for comparing absorbances with different wavelengths in Embodiments 1 to 9. The absorbance of the solution was measured using an ultraviolet and visible light spectrometer (model number: UV-2450). The specifications of the absorption cell are as follows: a quartz absorbing cell (1 cm) with two polished faces; Environmental conditions: a temperature of 28 캜; And a wavelength range of 280 nm to 380 nm.

It can be seen from Table 1 that in the case of Example 1, that is, when the content of the nanocrystalline cellulose-fullerene particle mixture is 1 wt%, the absorbance at a wavelength of 280 nm is 1.23, the absorbance at a wavelength of 300 nm is 1.23, The absorbance at a wavelength of 320 nm is 1.09, the absorbance at a wavelength of 340 nm is 1.34, the absorbance at a wavelength of 360 nm is 1.37, and the absorbance at a wavelength of 380 nm is 1.15. All of these figures are relatively low.

In Examples 2 and 3, the absorbance was increased to some extent, but the increased range was so small that no significant absorbance was caused.

In each of Examples 4-9, the absorbance was significantly increased, most of the absorbance could reach 4 or more, and apparently contributed to reducing the skin hazard caused by UV light.

Furthermore, although the absorbance at each of Embodiments 8 and 9 may also reach 4 or more, the effects of Embodiments 8 and 9 were not significantly improved and even less effective than those of Embodiments 4 to 7, 9 is undesirable because it requires the addition of large amounts of nanocrystalline cellulose for economic benefit.

The nanocrystalline cellulose having a particle size of 70-80 nm selected in the present invention is a better compromise between performance and cost, and is thus easy to provide a product with excellent performance to the user.

In the present invention, the rose extract, the Chinese zucchini extract, the chrysanthemum extract, the licorice extract, the menthol and the similar Chinese herbal extract are described below.

The rose extract, the hibiscus extract, the chrysanthemum extract, and the licorice extract have naturally whitening effects. Since they are Chinese herbal extracts, they are not harmful to human body, have a natural whitening effect, and have no fluorescence effect. In addition, when used in combination with the nanocrystalline cellulose-fullerene particle mixture of the present invention, the Chinese herbal extract has a greater contact surface with the skin, thus promoting the absorption of these nutrients into the skin.

The menthol has a mint flavor, has a cool and fresh effect, has an advantage of maintaining a satisfactory feeling to the user and improving comfort.

According to a preferred embodiment of the present invention, the weight ratio of the rose extract, the horseradish extract, the herbal extract, the licorice extract and the menthol is 2.5-4.5: 1-2: 3-4: 2-4: 1-2 to be.

The skin-whitening and sunscreen composition according to a preferred embodiment of the present invention may further contain at least one of glyceryl monostearate, vaseline, propylene glycol , Xanthan gum, aloe gel, glycerin, span, tween and methyl paraben, and the total content of these components is 4 wt% to 10 wt%.

The glyceryl monostearate is generally used as an emulsifier in foods and cosmetics; The vaseline contributes to forming a protective film on the skin surface, thereby preventing water loss; The propylene glycol is generally used as a humectant in a facial mask or a wet paper napkin to prevent moisture from being rapidly lost from the formed compound, thereby prolonging the storage time; To improve the viscosity of the xanthan gum composition and to improve the stability of the emulsion system; The aloe gel is mainly used as a skin-care product of cosmetics, and has a moisturizing, sunlight blocking function, preventing odor, softening skin, reducing inflammation, relieving itching, relieving pain, Prevent freckles, relieve color spots, and the like; The glycerin has a moisturizing effect and prevents the skin from drying out; The span is mainly used as a dispersing agent to promote dissolution of other components; The twin is not added or added in small amounts because it has a slightly unpleasant odor; And the methylparaben have a relatively strong inhibitory effect on the bacteria and have the advantage that the composition of the present invention works for a longer period of time and has a stable quality.

According to a preferred embodiment of the present invention, the weight ratio of the glyceryl monostearate, the petrolatum, the propylene glycol, the xanthan gum, the aloe gel, the glycerin, the span, the tween, Same: glyceryl monostearate: 0-1.6; Vaseline: 4-6.5; Propylene glycol: 0-2; Xanthan gum: 0-3.5; Aloe gel: 1.5-4.5; Glycerin: 1-2; Span: 2.5-5.5; Twin: 0-1; And methyl paraben: 1.5-3.

Manufacturing method

First, the materials were made into the following four groups:

Group A: glyceryl monostearate, vaseline, span and tween;

Group B: propylene glycol, glycerin and nanocrystalline cellulose-fullerene particle mixture;

Group C: rose extract, rhizome extract, chrysanthemum extract, licorice extract and menthol; And

Group D: water, xanthan gum, aloe gel and methyl paraben;

The materials in Group A were first heated to 50 ° C and then placed in a high-speed homogenizing mixer. Subsequently, the materials of group B and the materials of group C were slowly added to the materials of group A at a stirring rate of 2000 rpm (revolutions per minute), and the materials of groups A, B and C were uniformly mixed , The materials of group D were added and then they were stirred continuously for 30 minutes at the same stirring rate. The entire materials were removed from the kneader and placed in a 20 MPa high pressure homogenizer for treatment to obtain a composition of the present invention. Subsequently, the composition was sterilized at a constant temperature of 80 DEG C for 2 hours and cooled to room temperature naturally to obtain a sunscreen cream.

Those skilled in the art will understand that the weight of each of the above-described components can be obtained based on the proportions and contents of the present invention as described above to obtain the composition described by the present invention.

The composition of the present invention can prevent ultraviolet irradiation in the UVA region of 320-380 nm and the UVB region of 280-320 nm and has a sun protection factor (SPF) value of more than 15, It protects the skin. These sunscreen creams are safe for the human body, are non-toxic, have high sun protection and are applicable to all kinds of people.

Claims (5)

A skin-whitening and sunscreen composition comprising nanomaterials and Chinese herbal extracts,
Wherein the nanomaterial comprises nanocrystalline cellulose or nanocrystalline cellulose-fullerene particle mixture;
The Chinese herbal extracts include rose extract, Rehmannia glutinosa Libosch extract, Red peony extract, Licorice extract, menthol and water;
The content of the nanomaterial is 4-7% by weight,
The skin-whitening and sunscreen composition of claim 6, wherein the total content of the rose extract, the horseradish extract, the herbal extract, the licorice extract, and the menthol is 6-12 wt%. [2] The method of claim 1, wherein the weight ratio of the rose extract, the horsetail extract, the extract, the licorice extract and the menthol is 2.5-4.5: 1-2: 3-4: 2-4: And a sunscreen composition. The skin-whitening and sunscreen composition of claim 1, wherein the particle size of the nanocrystalline cellulose is 70-80 nm. The skin-whitening and sunscreen composition of claim 1, wherein the skin-whitening and sunscreen composition is selected from the group consisting of glyceryl monostearate, vaseline, propylene glycol, xanthan gum, aloe gel, glycerin, span, tween, Wherein the total content of said components is 4 wt% to 10 wt%. [4] The method according to claim 4, wherein the weight ratio of the glyceryl monostearate, the Vaseline, the propylene glycol, the xanthan gum, the aloe gel, the glycerin, the span,
Glyceryl monostearate: 0-1.6;
Vaseline: 4-6.5;
Propylene glycol: 0-2;
Xanthan gum: 0-3.5;
Aloe gel: 1.5-4.5;
Glycerin: 1-2;
Span: 2.5-5.5;
Twin: 0-1; And
Methylparaben: 1.5-3. A skin-whitening and sunscreen composition.