KR20070072434A - Solid formed cosmetic composition for sunscreen - Google Patents

Abstract

Provided is a solid type UV blocking cosmetic composition which shows excellent UV blocking effect with convenient use, and has excellent feeling of use, waterproof property and long-term storage stability. The solid type UV blocking cosmetic composition comprises 1-20 wt.% of an organic UV blocking agent such as octyl methoxycinnamate, octyl salicylate, octocrylene, butylmethoxydibenzoylmethane, oxybenzone, octyltriazone, menthyl anthranilate, 3,4-methylbenzylidene camphor, and bis-ethylhexyloxyphenolmethoxyphenyltriazine, 1-40 wt.% of an inorganic blocking agent such as titanium dioxide, zinc oxide, and iron oxide or a mixture thereof, and 3-10 wt.% of wax such as a vegetable wax, an animal wax, a mineral wax, and a petroleum wax, wherein the hardness is 500-1,200 dyne/cm^2 and the sun protecting factor(SPF) is 50-80.

Description

Solid sunscreen cosmetic composition {SOLID FORMED COSMETIC COMPOSITION FOR SUNSCREEN}

[Industrial use]

The present invention relates to a solid sunscreen cosmetic composition, more specifically, it is easy to use, excellent water resistance, the sunscreen effect is not reduced by sweat or water, solid sunscreen cosmetics excellent in long-term stability It relates to a composition.

[Prior art]

Ultraviolet rays irradiated from the sun act as a major cause of erythema, edema, freckles, or skin cancer on the skin. Accordingly, research on skin diseases caused by ultraviolet rays has been actively conducted.

In general, ultraviolet light depends on its wavelength, the wavelength of 200-290 nm is ultraviolet C (hereinafter referred to as UV-C), the wavelength of 290-320 nm is ultraviolet B (hereinafter referred to as UV-B), and 320-400 nm The wavelength of is classified into ultraviolet A (hereinafter referred to as UV-A). Among them, UV-C passes through the ozone layer and disappears without reaching the ground surface. UV-B penetrates the skin's epidermis and causes erythema, freckles and edema. UV-A is known to induce skin aging and skin irritation such as penetration into the dermis of the skin to promote skin cancer, wrinkles and melanin formation.

As the public's interest in sunscreen products increases as the risks of sun exposure become known, products with various Sun Protection Factor (SPF) and Protection grade of UVA (PA) It's coming out.

In general, formulations of sunscreen products are classified into water-in-oil (W / O) and oil-in-water (O / W). Among them, the water-in-oil type product has a good feeling of use, but has a problem in that the UV blocking effect is reduced by sweat or water because water resistance is inferior. On the other hand, oil-in-water type products have excellent water resistance but less use than water-in-oil type products.

In general, sunscreen products are inorganic sunscreens such as titanium dioxide, zinc oxide, and iron oxide, or octylmethoxycinnamate, octylsalicylate, octocrylene, butylmethoxydibenzoylmethane in order to have high SPF values. Organic sunscreens such as oxybenzone, octyltriazone, menthylanthranilate and 3,4-methylbenzylidene camphor.

However, there is a problem of cloudiness as the inorganic sunscreen is used in the sunscreen product, and there is a problem of deterioration of the feeling such as heavy and greasy as the organic sunscreen is used.

Therefore, in order to make a sunscreen product having a high SPF value and a PA value, there is a limit on the feeling of use, and many studies have been conducted to improve this.

For example, Korean Patent Publication No. 2000-0015146 discloses a sunscreen cosmetic composition containing titanium oxide in a silica carrier. However, since the cosmetic composition disclosed in 2000-0015146 is limited to UVB blocking, there is still a problem that constraints on feeling in order to improve UVA blocking ability remain.

In consideration of the problems of the conventional sunscreen products as described above, an object of the present invention is to provide a solid sunscreen cosmetic composition excellent in the sunscreen effect, yet easy to use, excellent in usability, water resistance and long-term stability.

In order to achieve the above object, the present invention

1-20% by weight of organic sunscreen;

Inorganic sunscreen 1-40 weight percent;

Wax component 3 to 10 wt%;

Nonionic surfactant 1 to 10% by weight;

10-50 wt% oil component;

Silicone polymer 1 to 20% by weight; And

Pigment 5-30 wt%

It provides a solid sunscreen cosmetic composition comprising a.

In particular, the cosmetic composition according to the present invention preferably has a hardness of 500 to 1200 dyne / ㎠.

In addition, the composition according to the present invention has a UV blocking index (SPF) of 50 to 80, UV A blocking grade (PA) is triple plus (PA + + +).

Hereinafter, the present invention will be described in more detail.

The inventors of the present invention, when using an organic sunscreen, an inorganic sunscreen, a wax component, a nonionic surfactant, an oil component, and a silicone polymer in an appropriate amount in the sunscreen cosmetic composition, it is excellent in the sunscreen effect, but is convenient to use, feeling, water resistance and The present invention has been accomplished by discovering that long-term stability can be improved.

The solid sunscreen cosmetic composition according to the present invention is preferably a solid having a hardness of 500 to 1200 dyne / cm 2. Accordingly, the composition of the present invention may exhibit a better feeling than a general cream type sunscreen composition having a hardness of 20 to 30 dyne / cm 2.

In addition, it is preferable that the solid sunscreen cosmetic composition according to the present invention has a sunscreen index (SPF) of 50 to 80, and a UVA blocking grade (PA) of triple plus (PA +++).

In order to have the physical properties as described above, the solid sunscreen cosmetic composition according to the present invention comprises an organic sunscreen; Inorganic sunscreens; Wax components; Nonionic surfactants; Oil component; Silicone polymers; And pigments.

In the composition according to the invention, the organic sunscreen is octylmethoxycinnamate, octylsalicylate, octocrylene, butylmethoxydibenzoylmethane, oxybenzone, octyltriazone, menthyl anthranilate, 3,4- Preference is given to using one or more selected from the group consisting of methylbenzylidene kempfer and bis-ethylhexyloxyphenolmethoxyphenyltriazine.

In addition, the composition according to the present invention may comprise 1 to 20% by weight of the organic sunscreen. That is, the organic sunscreen agent is preferably included 1% by weight or more in order to maintain the UV blocking power, it is preferably included in 20% by weight or less in order to prevent a feeling of use.

In the composition according to the present invention, the inorganic sunscreen is one from the group consisting of titanium dioxide having an average particle size of 0.01 to 100 nm, zinc oxide having an average particle size of 0.01 to 300 nm, and iron oxide having an average particle size of 1 to 300 nm. It is preferable to use what is selected above.

In addition, the composition according to the present invention may comprise 1 to 40% by weight of the inorganic sunscreen. That is, the inorganic sunscreen agent is preferably included 1% by weight or more in order to maintain the UV blocking power, it is preferably included in 40% by weight or less in order to prevent a feeling of use.

In the composition according to the present invention, the wax component may include plant waxes including candelilla wax, carnauba wax, or rice wax; Animal waxes including beeswax or lanolin; Mineral waxes including ozokerite or ceresin wax; And it is preferable to use at least one selected from the group consisting of paraffin wax, microcrystalline wax, or petroleum wax including polyethylene wax.

In addition, the composition according to the invention may comprise 3 to 10% by weight of the wax component. That is, the wax component is preferably included 3% by weight or more in order to maintain high temperature stability, it is preferably included in 10% by weight or less in order to prevent a feeling of use.

In the composition according to the present invention, it is preferable that the nonionic surfactant uses a lipophilic nonionic surfactant to improve formulation stability. Specifically, it is preferable to use one or more selected from the group consisting of glyceryl stearate, sorbitan sesquioleate, sorbitan stearate, fiji-10 dimethicone, and sorbitan olibate.

In addition, the composition according to the present invention may comprise 1 to 10% by weight of the nonionic surfactant. That is, the nonionic surfactant is preferably included 1% by weight or more in consideration of formulation stability, it is preferable to include 10% by weight or less for the feeling of use.

In the composition according to the present invention, the kind of the oil component is not particularly limited, and conventional oils used in cosmetic compositions may be used. Specifically, hydrocarbon-based oils including squalane or mineral oils; Caprylic / capric triglycerides, neopentyl glycol dicaprate, 2-octyldodecyl myristate, isopropyl mysteryte, cetyl 2-ethylhexanoate, octyldodecanol, or glyceryl triethylhexanoate Ester-based oil including; Vegetable oils including olive oil, jojoba oil, or macadamia oil; And silicone oils comprising cyclomethicone or dimethicone.

In addition, the composition according to the invention may comprise 10 to 50% by weight of the oil component. That is, the oil component is preferably included in more than 10% by weight for the stability of the formulation, it is preferably included in the 50% by weight or less for the feeling of use.

In the composition according to the invention, the silicone polymer is dimethicone / dimethicone Fiji-10 / 15, dimethicone / polyglycerin-3, dimethicone / dimethiconol, dimethicone / dimethicone vinyl dimethicone, cyclomethicone / Dimethiconol, cyclomethicone / dimethicone, cyclomethicone / trimethylsiloxysilicate, cyclopentasilonic acid / dimethicone, cyclopentasilonic acid / fiji-12 dimethicone, cyclopentasilonic acid / cetearyl dimethicone Preference is given to using one or more selected from the group consisting of chicon / vinyl dimethicone, and cyclopentasilonic acid / dimethicone / vinyl dimethicone.

In addition, the composition according to the invention may comprise 1 to 20% by weight of the silicone polymer. That is, the silicone polymer is preferably included 1 wt% or more for the stability of the formulation, it is preferable to include 20 wt% or less for the feeling of use.

In the composition according to the present invention, the pigment may be a clay mineral pigment comprising iron oxide, alumina, talc, mica, kaolin, barium silicate, zeolite, dolomite, synthetic mica, or magnesium carbonate; Inorganic pigments including barium sulfate, iron titanate, or titanium oxide coated mica; Preference is given to using at least one selected from the group consisting of polystyrene powders, polymethyl methacrylate powders, polyethylene powders, nylon powders, or organic pigments including silicone powders.

In addition, the composition according to the invention may comprise 5 to 30% by weight of the pigment. That is, it is preferable to include 5% by weight or more in order to maintain the oily feeling and oil absorption ability to sebum appropriately, and it is preferable that it is included in 30% by weight or less in order to prevent poor moldability and spreadability.

In addition, it is preferable that the said pigment uses what was hydrophobized. Specifically, the surface of the powder pigment can be used by treating the surface of the powder pigment with high viscosity silicone, alkyl hydrogen polysiloxane, cationic surfactant, anionic surfactant, nonionic surfactant, or wax.

In addition, the solid sunscreen cosmetic composition according to the present invention may further include perfumes, pigments, preservatives, fungicides, oxidative stabilizers, and pearls within the range of not impairing the effect of the composition in addition to the above components.

Hereinafter, preferred examples and comparative examples of the present invention are described.

The following Examples and Comparative Examples are only described for the purpose of more clearly expressing the present invention, but the contents of the present invention are not limited to the following Examples and Comparative Examples.

[ Example ]

Example  1 and 2

In the composition ratios shown in Table 1 below, octylmethoxycinnamate and bis-ethylhexyloxyphenol methoxyphenyl triazine as organic sunscreens; Ceresin as a wax component; Fiji-10 dimethicone, which is a nonionic surfactant; Dimethicone and glyceryl triethylhexanoate as oil components; Cyclomethicone / trimethylsiloxysilicates and dimethicone / dimethicone vinyldimethicone crosspolymers which are silicone polymers; Methyl paraben, which is a preservative, was dissolved by heating to 80 DEG C, and then titanium dioxide and zinc oxide, which are inorganic sunscreens; And silica powder or nylon powder as a pigment was added and uniformly dispersed.

Subsequently, the composition was degassed using a vacuum pump at 80 ° C., then filled into a mold and cooled at 25 ° C. to prepare a solid composition.

ingredient Content (% by weight) Example 1 Example 2   Octylmethoxycinnamate 7 7   Bis-ethylhexyloxyphenol methoxyphenyltriazine 2 2   Ceresin wax 6 6   PG-10 Dimethicone 2 2   Methyl paraben 0.1 0.1   Dimethicone 15 15   Glyceryl Triethyl Haksenate 20.9 20.9   Cyclomethicone / trimethylsiloxysilicate 4 4   Dimethicone / Dimethicone Vinyl Dimethicone 10 10   Titanium dioxide 5 5   Zinc oxide 11 11   Silica powder 17 -   Nylon powder - 17

[ Comparative example ]

Comparative example  1 and 2

At the composition ratios shown in Table 2 below, the aqueous and oil phase components were dissolved and dispersed at 75 ° C. Subsequently, Comparative Example 1 prepared an oil-in-water (O / W) emulsion having a hardness of 28 dyne / cm 2 by slowly adding an aqueous phase, and Comparative Example 2 had a hardness of 30 dyne / cm 2 by slowly adding an oil phase to the aqueous phase. Water-in-oil (W / O) emulsions were prepared.

ingredient Content (% by weight) Comparative Example 1 Comparative Example 2   Awards   Purified water 46 45.4   glycerin 7 7   Propylene glycol 5 5   Magnesium sulfate 0.5 -   Magnesium aluminum silicate - 0.3   Hydroxyethyl cellulose - 0.1        Yu Sang   Octylmethoxycinnamate 7 7   Bis-ethylhexyloxyphenol methoxyphenyltriazine 2 2   Cyclomethicone 5 2   Dimethicone One One   Isononyl isononanoate 2 3   Hexyllaurate 2 3   Solbitan Sesquioleate One One   Cetostearyl alcohol - 3   Glyceryl Monostearate - One   Fiji-100 Stearate - 1.2   Bentonite 0.5 -   Dimethicone / Dimethicone Vinyl Dimethicone 4 One   Dimethicone Copolyol One One   Titanium dioxide 5 5   Zinc oxide 11 11

[ Experimental Example ]

The UV protection index and UVA protection rating of the compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were measured, and the usability, formulation stability, and skin safety were evaluated. Detailed evaluation methods and results are as follows. Same as

Experimental Example  1: UV block index ( SPF ) Measure

According to the KFDA 'functional cosmetic standards and test methods' according to the 'ultraviolet ray screening functional test method' was measured UV protection index (SPF) for the compositions of Examples 1, 2 and Comparative Examples 1, 2. The sample was applied to a transpore tape to a level of 2 mg / cm 2, and dried for 15 minutes and measured with an SPF 290 analyzer. UV protection index was summarized as the average value of three experiments, the results are shown in Table 3 below.

sample Example 1 Example 2 Comparative Example 1 Comparative Example 2 In vitro SPF 52.20 ± 4.91 52.67 ± 3.70 51.20 ± 3.59 52.56 ± 4.25

Experimental Example  2: UVA blocking grade PA ) Measure

This experiment was carried out in accordance with the method and criteria for measuring the sunscreen effect according to Article 9 of the Cosmetic Act and Article 6 of the Enforcement Rule of the same Act. This study was conducted on 10 healthy men and women aged 18-60 years old and used a multi-port solar simulator 601-300W (Solar Light, USA) equipped with a 300W xenon arc lamp as a light source. Light Inc., USA) was used to measure the light intensity. As a result of the measurement, both Examples and Comparative Examples exhibited a numerical value of PA +++ or higher.

Experimental Example  3: Feeling

50 women aged 25 to 45 years were evaluated for stickiness, shine, makeup base effect, formulation preference, ease of use, and overall satisfaction with the compositions of Examples 1, 2 and Comparative Examples 1, 2.

The solid compositions according to Examples 1 and 2 were applied to the face of the face using a puff, and the emulsions of Comparative Examples 1 and 2 were applied to the face of the face using a hand. It is shown in Table 4 below.

(Evaluation standard)

Very bad: 1, Bad: 2, Average: 3, Good: 4, Very good: 5

division Example 1 Example 2 Comparative Example 1 Comparative Example 2 Sticky 4.2 4.1 3.8 3.9 Bundle 4.3 4.2 3.7 3.8 Makeup base effect 4.3 4.3 3.7 3.6 Formulation Preference 4.2 4.2 3.9 3.8 Ease of use 4.6 4.6 3.8 3.9 Overall satisfaction 4.4 4.2 3.7 3.8

As shown in Table 4, the solid sunscreen cosmetic composition of Examples 1 and 2 according to the present invention is sticky, shine, makeup base effect compared to the oil-in-water composition of Comparative Example 1, water-in-oil composition of Comparative Example 2 , Formulation preference, ease of use and overall satisfaction were excellent.

Experimental Example  4: formulation stability

After the compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were allowed to stand for two months at temperatures of minus 15 ° C, 0 ° C, 25 ° C, 40 ° C, 45 ° C and 50 ° C, The separation phenomenon was evaluated visually, the results are shown in Table 5.

(Evaluation standard)

When the separation is not good, it is marked as □□ ○ □□ (good), and when the separation is observed, it is marked as □□ X □□ (unstable).

division Example 1 Example 2 Comparative Example 1 Comparative Example 2 -15 ℃ ○ X X ○ 0 ℃ ○ ○ ○ ○ 25 ℃ ○ ○ ○ ○ 40 ℃ ○ ○ ○ ○ 45 ℃ ○ ○ X X 50 ℃ ○ X X X

As shown in Table 5, the compositions of Examples 1 and 2 were superior to the formulation stability compared to the compositions of Comparative Examples 1 and 2.

Experimental Example  5: skin safety

Healthy men and women each underwent a 24-hour patch test using a patch test bandage on 30 arms.

That is, after applying a certain amount (15mg / 15μl) of the sample to the pin chamber, the pin chamber to which the sample was applied was taped to the test site (arm), and the patch was removed after 24 hours of patching. Subsequently, after 4 hours, erythema abnormalities appearing on the skin were observed and classified according to Table 6 below.

The skin stimulation index (PII) was calculated from the score according to the above criteria by the following calculation method and is shown in Table 7 below.

[formula]

reaction Score Symptoms and Criteria - 0   No response +/- 0.5   Weak erythema + 1.0   Clear erythema ++ 2.0   Severe erythema with edema +++ 3.0   Severe erythema with bullous, edema

division Example 1 Example 2 Comparative Example 1 Comparative Example 2 Stimulus index 0.02 0.04 0.12 0.14

As shown in Table 7, the compositions of Examples 1 and 2 were superior in skin safety as compared to the compositions of Comparative Examples 1 and 2.

As described above, the solid sunscreen cosmetic composition according to the present invention may have a high SPF value and a PA value, and may exhibit excellent usability due to less stickiness or shine. In addition, the cosmetic composition of the present invention is excellent in makeup base effect and water resistance, by using a puff (puff) excellent in ease of use, and excellent in long-term stability and skin safety.

Claims (14)

About total composition Organic sunscreen 1 to 20% by weight, inorganic sunscreen 1 to 40% by weight or mixtures thereof; And A solid sunscreen cosmetic containing 3 to 10% by weight of a wax component, a hardness of 500 to 1200 dyne / cm 2, and a UV blocking index (SPF) of 50 to 80. The method of claim 1, The sunscreen cosmetic is a solid sunscreen cosmetics having a UV A protection grade (PA) triple plus (PA +++). The method of claim 1, The wax component may include plant waxes including candelilla wax, carnauba wax, or rice wax; Animal waxes including beeswax or lanolin; Mineral waxes including ozokerite or ceresin wax; And at least one selected from the group consisting of paraffin wax, microcrystalline wax, or petroleum wax including polyethylene wax. The method of claim 1, The organic sunscreen is octylmethoxycinnamate, octylsalicylate, octocrylene, butylmethoxydibenzoylmethane, oxybenzone, octyltriazone, menthylanthranilate, 3,4-methylbenzylidene camphor, and bis -Solid sunscreen cosmetics selected from the group consisting of ethylhexyloxyphenol methoxyphenyl triazine. The method of claim 1, Solid inorganic sunscreen cosmetics are selected from the group consisting of titanium dioxide, zinc oxide, and iron oxide. The method of claim 1, A solid sunscreen cosmetic composition comprising 10 to 50% by weight of an oil component. The method of claim 6, The oil component may be a hydrocarbon-based oil including squalane or a mineral oil; Caprylic / capric triglycerides, neopentyl glycol dicaprate, 2-octyldodecyl myristate, isopropyl mysteryte, cetyl 2-ethylhexanoate, octyldodecanol, or glyceryl triethylhexanoate Ester-based oil including; Vegetable oils including olive oil, jojoba oil, or macadamia oil; And at least one selected from the group consisting of silicone oils containing cyclomethicone or dimethicone. The method of claim 1, Solid-type sunscreen cosmetics containing 1-10 weight% of nonionic surfactants or 1-20 weight% of silicone polymers. The method of claim 8, The nonionic surfactant is a solid sunscreen cosmetic selected from the group consisting of glyceryl stearate, sorbitan sesquioleate, sorbitan stearate, Fiji-10 dimethicone and sorbitan olibate . The method of claim 8, The silicone polymer may be dimethicone / dimethicone Fiji-10 / 15, dimethicone / polyglycerin-3, dimethicone / dimethiconol, dimethicone / dimethicone vinyldimethicone, cyclomethicone / dimethiconol, cyclomethicone Chicone / dimethicone, cyclomethicone / trimethylsiloxysilicate, cyclopentasilonic acid / dimethicone, cyclopentasilonic acid / fiji-12 dimethicone, cyclopentasilonic acid / cetearyl dimethicone / vinyl dimethicone, and Solid sunscreen cosmetics selected from the group consisting of cyclopentasilonic acid / dimethicone / vinyl dimethicone. The method of claim 1, Pigment 고 Solid sunscreen cosmetic composition comprising 5 to 30% by weight. The method of claim 11, The pigment may be a clay mineral pigment including iron oxide, alumina, talc, mica, kaolin, barium silicate, zeolite, dolomite, synthetic mica, or magnesium carbonate; Inorganic pigments including barium sulfate, iron titanate, or titanium oxide coated mica; The solid sunscreen cosmetics selected from the group consisting of polystyrene powder, polymethyl methacrylate powder, polyethylene powder, nylon powder, or silicon pigment. Preparing a mixture by heating and mixing a composition comprising an organic sunscreen, a wax component, and an oil component; Preparing a dispersion by dispersing a composition comprising an inorganic sunscreen in the mixture; And Defoaming and cooling the dispersion Method for producing a solid sunscreen cosmetic according to claim 1 comprising a. A cosmetic comprising a solid sunscreen cosmetic according to any one of claims 1 to 12 and a puff which can apply the cosmetic to the skin.