KR100848880B1 - Cosmetic compositions for uv screen having self-tanning effect - Google Patents

Abstract

Cosmetic compositions comprising an iron oxide nanopigment are provided to block UV(ultraviolet), supply natural self-tanning effects to the skin, maintain the self-tanning effects for a long time, and improve skin texture by serving the treatment effects to the skin. A cosmetic composition for self-tanning the skin comprises 0.2-3 wt.% of an iron oxide nanopigment selected from cloisonne orange, cloisonne copper, cloisonne gold, cloisonne cerise flambe, cloisonne golden bronze and cloisonne imperial gold, 0.8-5 wt.% of extracts of chicory and Gymnema sylvestre, 10-35 wt.% of UV filter, 0.5-5 wt.% of silicon emulsifier, 10-50 wt.% of liquefied silicon oil, and purified water.

Description

Cosmetic compositions for UV screening with self-tanning effect

The present invention is a UV cosmetic composition imparting a self-tanning effect of the skin, in the form of a water-in-oil emulsion, 0.2 to 3% by weight of at least one iron oxide nano pigment having an average size of the major particles in the excipient, less than 50 nm, chicory and Kimnema extract It relates to a composition containing 0.8 to 5% by weight.

In recent years, many consumers are hoping for skin tanning for a healthy appearance. However, natural tanning is not always desirable because it requires long exposure to ultraviolet light, especially UVA, which causes the skin to be brown, but for sensitive skin or skin that is constantly exposed to the sun's rays, It may damage it. Therefore, there has been a continuing need for alternatives to natural tanning that can achieve tanning effects even under such skin conditions.

Most cosmetics for artificial tanning of the skin are based on carbonyl derivatives that can work with the amino acids of the skin to form colored products.

Dihydroxyacetone (DHA) has been known for many years as a tanning agent on human skin. Not only is DHA known to give a rather unnatural orange color on the skin, but it is also highly reactive with other ingredients in the mixture, resulting in rapid degradation and unpleasant discomfort as a cosmetic. In addition, the development process of the skin usually takes a long time (several hours), there is a disadvantage that it discolors too quickly (several hours to a few days).

DHA is formulated with several additives to compensate for the drawbacks inherent in these products. Thus, there has been an increasing need for self-tanning products that act quickly and provide a color similar to natural tanning.

A combination of a sunscreen and a tanning agent based on DHA is described in International Patent No. WO 94/23693, which discloses 0.1 to 20% by weight of DHA and 0.1 to 30 sunscreen selected from a wide range of materials. An O / W emulsion containing 0.1% to 10% by weight, crosslinkable cationic polymer and 0.1 to 10% by weight of a cationic emulsifier.

EP A 627,214 discloses self-tanning DHA formulations containing pigments such as eosin derivatives which adhere to the skin.

U. S. Patent No. 4,217, 344 describes sunscreen and tanning agents based on DHA containing tartaric anhydride and a special microsphere dispersion.

The present inventors have conducted a long study and invented a composition which has a sunscreen effect and at the same time provides a natural self-tanning effect as a skin texture.

The present invention has been made to provide an alternative to natural tanning that is compatible with special conditions that can damage the skin and to solve the above problems, the main object of the present invention is a sunscreen cosmetic composition imparting a self-tanning effect In more detail, the iron oxide nano pigment in water-in-oil emulsion excipient shows instant and long-lasting tanning effect, and the chicory and gemma extract are used to give the skin a natural and skin texture. This shows a more beautiful self-tanning effect.

The present invention relates to a sunscreen cosmetic composition imparting a self-tanning effect, in the form of a water-in-oil emulsion, 0.2 to 3% by weight of one or more iron oxide nano pigments having an average size of the major particles in an excipient of less than 50 nm, chicory and Kimnema extract It relates to a composition containing 0.8 to 5% by weight.

In order to achieve the above object, the present invention provides a sunscreen cosmetic composition provided with a self-tanning effect, including iron oxide nano pigments, chicory and kimne extract, UV filter, silicone surfactant, oil and water.

Hereinafter, the present invention will be described in detail.

The sunscreen cosmetic composition imparting the self-tanning effect according to the present invention is 0.2 to 3% by weight of iron oxide nano pigments, 0.8 to 5% by weight of chicory and Kimnema extract, 10 to 35% by weight of UV filter, 0.5 to 0.5% of silicone emulsifier. 5% by weight, 10 to 50% by weight of the liquid silicone oil, characterized in that it comprises 2 to 20% by weight of purified water.

The iron oxide nano pigments used in the sunscreen cosmetic composition imparted with the self-tanning effect of the present invention usually have an average main particle size of 5 nm to 50 nm. The iron oxide nano pigment is present in the composition of the present invention in a ratio of more than 0.1% by weight, preferably 10% by weight or less, more preferably 0.2 to 3% by weight, based on the total weight of the composition.

The iron oxide nano pigments are not limited thereto, but iron oxide nano pigments that may be used are as follows.

Mica / iron oxide / titanium oxide [Cloisonne Orange; ENGELHARD], mica / iron oxide / titanium oxide [Cloisonne Copper; ENGELHARD], mica / titanium oxide / iron oxide [Cloisonne Gold; ENGELHARD], mica / iron oxide [Cloisonne Cerise Flambe; ENGELHARD], mica / iron oxide / titanium oxide [Cloisonne Golden Bronze; ENGELHARD], mica / titanium oxide / iron oxide [Cloisonne Imperial Gold; ENGELHARD] and the like can be used alone or in combination. The mixing ratio of the iron oxide nano pigments can be adjusted to give the desired tanning effect.

Chicory and Kimnema extract used in the sunscreen cosmetic composition imparting the self-tanning effect of the present invention is more than 0.5% by weight, preferably 10% by weight or less, more preferably 0.8 to 5% by weight based on the total weight of the composition Present in the composition of the present invention.

The chicory and Kimnema extract is not limited thereto, but the chicory and Kimnema extract that can be used are as follows.

Purified water / Butylene glycol / Chichorium intibus (chicory) root extract / Kimnesilyl best grain extract [Quicksun Mat; Coletica Inc.], Purified Water / Butylene Glycol / Cchochorium Intibus Root Extract / Tichopetalum Olcoid Foil Extract (Quicksun Clear; Coletica Inc.] may be used alone or in combination. The extract is used to impart a natural tanning effect and provide a treatment effect to the skin.

The UV filter used in the sunscreen cosmetic composition imparted with the self-tanning effect of the present invention is more than 5% by weight, preferably 40% by weight or less, more preferably 10 to 35% by weight, based on the total weight of the composition. Present in the composition.

The UV filter is not limited thereto, but UV filters that may be used are as follows.

Octylmethoxycinnamate, isoamyl p-methoxycinnamate, octocrylene, methylenebis-benzotriazolyltetramethylbutylphenol / decylglucoside / xanthan gum /

Propylene glycol / purified water [Tinosorb M; Ciba], octyl trizone, benzophenone-3, titanium oxide, zinc oxide and the like can be used alone or in combination.

The silicone emulsifier used in the sunscreen cosmetic composition imparted with the self-tanning effect of the present invention is more than 0.3% by weight, preferably 7% by weight or less, more preferably 0.5 to 5% by weight, based on the total weight of the composition. Present in the composition of the invention.

The silicone emulsifier is not limited thereto, but silicone emulsifiers that may be used are as follows.

Polyoxyethylene methyl polysiloxane copolymer, poly (oxyethyleneoxypropylene) methyl polysiloxane copolymer, polyoxypropylene methyl which added interfacial force by adding polyoxyethylene, polyoxypropylene, polyoxyethylene polyoxypropylene, etc. to liquid silicone Dimethicone copolyols such as polysiloxane copolymers and fatty alcohols thereof, or derivatives such as methylcetyloxysiloxane copolymer and methyl stearoxy siloxane copolymer in which a fatty acid or alkyl chain is partially substituted with an alkyl group can be used. The silicone surfactant may be blended so as to form a stable emulsion alone or in combination of two or more thereof.

The liquid silicone oil used in the sunscreen cosmetic composition imparted with the self-tanning effect of the present invention is more than 5% by weight, preferably 60% by weight or less, more preferably 10 to 50% by weight, based on the total weight of the composition. Present in the composition of the invention.

The liquid silicone oil is not limited thereto, but liquid silicone oils that may be used are as follows.

Methylpolysiloxane, methylphenylpolysiloxane, cyclopentasiloxane, methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetradecamethylhexahexasiloxane, octamethyltrisiloxane, and the like. By using alone or in combination of two or more, a stable emulsion can be formed.

Furthermore, the sunscreen cosmetic composition imparted the self-tanning effect of the present invention includes purified water and may include 2.0 to 20% by weight based on the total weight of the composition.

The sunscreen cosmetic composition imparted with the self-tanning effect of the present invention may contain other cosmetic ingredients as necessary within the scope of not impairing the object of the present invention. For example, but not limited thereto, flavors, preservatives, fungicides, antioxidants and the like can be blended in an appropriate amount.

Hereinafter, the present invention will be described in detail by Examples and Experimental Examples.

However, the following Examples and Experimental Examples are merely illustrative of the present invention, and the content of the present invention is not limited thereto.

In order to determine the skin tanning effect of the iron oxide nano pigments and chicory and Kimnema extract, cosmetics are shown in Tables 1 and 2 as follows.

Experimental Example 1 Formulation Application of Iron Oxide Nano Pigment and Chicory and Gemma Extract

Following the composition ratio shown in Tables 1 and 2, the oil phase component and the water phase component were heated to 70-75 ° C., respectively, and completely dissolved. Subsequently, the aqueous phase component was added to the oil phase component, followed by heating and mixing, followed by the addition of the additive component at 50 ° C to prepare a sunscreen cosmetic composition.

division Ingredient Name Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Oily ingredients UV filter Octoctyl methoxycinnamei 7.40 7.40 7.40 7.40 7.40 7.40 7.40 Isoamyl p-methoxycinnamate 4.00 4.00 4.00 4.00 4.00 4.00 4.00 Octocrylene 5.00 5.00 5.00 5.00 5.00 5.00 5.00 Silicone emulsifier Cetyl Fiji Fiji-10 1 Dimethicone 2.00 2.00 2.00 2.00 2.00 2.00 2.00 Fiji-7 Dimethicone 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Silicone oil Cyclopentasiloxane 35.00 35.00 35.00 35.00 35.00 35.00 35.00 Iron Oxide Nano Pigment Mica (61.20%) / iron oxide (16.40%) / titanium oxide (22.40%) - - 0.50 0.80 1.00 - - Mica (53.90%) / iron oxide (44.70%) / titanium oxide (1.40%) - - 0.70 1.00 1.30 - - antiseptic Propylparaben 0.10 0.10 0.10 - 0.10 0.10 0.10 Water component DHA Dihydroxyacetone - 3.00 - - - - - Stabilizer Sodium chloride 0.50 0.50 0.50 0.50 0.50 0.50 0.50 solvent Purified water To 100 To 100 To 100 To 100 To 100 To 100 To 100 additive Chicory and Kimnema Extract Purified Water / Butylene Glycol / Chichorium Intibus Root Extract / Kimnesil Silvestretic Extract - - - - - 3.00 5.00

Unit: weight%.

division Ingredient Name Example 1 Example 2 Example 3 Oily ingredient UV filter Octylmethoxycinnamate 7.40 7.40 7.40 Isoamyl p-methoxycinnamate 4.00 4.00 4.00 Octocrylene 5.00 5.00 5.00 Silicone emulsifier Octocrylene 2.00 2.00 2.00 Fiji-7 Dimethicone 1.00 1.00 1.00 Silicone oil Cyclopentasiloxane 35.00 35.00 35.00 Iron Oxide Nano Pigment Mica (61.20%) / iron oxide (16.40%) / titanium oxide (22.40%) 0.50 0.50 0.50 Mica (53.90%) / iron oxide (44.70%) / titanium oxide (1.40%) 0.70 0.70 0.70 antiseptic Propylparaben 0.10 0.10 0.10 Water component Stabilizer Sodium chloride 0.50 0.50 0.50 solvent Purified water To 100 To 100 To 100 additive Chicory and Kimnema Extract Purified Water / Butylene Glycol / Chichorium Intibus Root Extract / Kimnesil Silvestretic Extract 3.00 3.00 3.00

Unit: weight%.

Experimental Example 2 Application of Human Body to Measure UV-A Blocking Index

1) Evaluation method

Light irradiation area 0.5cm ² on the back (except spine region) of 10 healthy men and women aged 18 to 60 who meet Example ² Sample area 35 cm ² (5 cm × 7 cm), Stabilization time 15 minutes after sample application, sample application amount 2mg / cm ² The ratio was applied.

Article 9 of the Cosmetic Act and the Enforcement Rule 6 of the Act using Multi-port Solar Simulator 601-300W (Solar Light, USA), an artificial ultraviolet emitter equipped with a 300W xenon arc lamp It was carried out according to the method and criteria for measuring the sunscreen effect according to the provisions of the article.

2) Evaluation result

Sample Name PFA figures Standard error 10% of average PFA Standard Time 3.77 0.11 0.38 Example 2 9.82 0.29 0.98

Based on the evaluation results, the UV A blocking index of Example 2 was found to be 9.82 ± 0.91, PA [+++].

[Test Example 3] Test for human application Sun Protection Factor (SPF) measurement

1) Evaluation method

Light irradiation area 0.5cm ² on the back (except spine region) of 10 healthy men and women aged 18 to 60 who meet Example ² Sample application area 24 cm ² (6 cm × 4 cm), Stabilization time 15-20 minutes after sample application, sample application amount 2mg / cm ² The ratio was applied.

Using the Oriel Solar UV Simulator (Oriel Instrument, USA), an artificial ultraviolet emitter equipped with a 1000 W xenon arc lamp (Ozonless), UV protection effect was performed according to the method and standard.

2) Evaluation result

Sample Name SPF figures Standard Deviation 95% confidence interval High SPF Standard 14.86 ± 2.20 ± 1.57 Example 2 42.90 ± 1.02 ± 0.73

Based on the evaluation results, the UV blocking index (SPF) of Example 2 was found to be 42.90 ± 1.02.

Experimental Example 4 Skin Tanning Effect of Iron Oxide Nano Pigment and Chicory and Kimnema Extract

1) Evaluation method

Comparative Examples 1 to 7 and Examples 3 to ² mg / cm ^{2 in a} limited 2.25 cm ² (1.5 cm × 1.5 cm) area of five arm volunteers The ratio was applied.

The melanin index (Melanin, C + K, Germany) was measured three times each after the initial, 15 minutes, 1 hour, 3 hours and 5 hours.

2) Evaluation result

Melanin index of Comparative Examples 1 to 7

number Subject Melanin index (average of 3 measurements) Comparative Example 1 Comparative Example 2 Early 15 minutes 1 hours 3 hours 5 hours Early 15 minutes 1 hours 3 hours 5 hours One Kim Kyu Kim 475.6 474.2 473.0 473.1 475.7 473.4 474.6 476.7 476.9 477.8 2 Kim ○ 472.3 472.1 471.3 471.5 472.3 476.9 476.9 477.6 478.9 479.0 3 Kim ○ 474.7 473.4 473.2 474.1 474.9 481.4 482.3 483.4 484.5 484.7 4 ○ 463.3 462.7 461.6 462.1 463.5 466.3 467.5 468.5 468.9 469.7 5 This year 462.3 461.2 463.4 463.1 462.5 466.4 467.2 468.3 469.0 469.3

number Subject Melanin index (average of 3 measurements) Comparative Example 3 Comparative Example 4 Early 15 minutes 1 hours 3 hours 5 hours Early 15 minutes 1 hours 3 hours 5 hours One Kim Kyu Kim 474.6 475.9 476.8 479.0 479.2 470.2 473.8 475.3 476.2 477.9 2 Kim ○ 473.3 476.1 476.3 478.9 478.0 471.3 474.6 475.2 475.9 476.4 3 Kim ○ 480.7 482.1 485.1 487.3 486.1 479.7 482.3 483.7 484.8 485.3 4 ○ 462.3 464.3 466.8 467.4 467.7 460.2 463.4 464.2 465.1 466.3 5 This year 460.4 461.9 462.9 463.5 463.8 462.9 465.2 465.3 465.9 467.8

number Subject Melanin index (average of 3 measurements) Comparative Example 5 Comparative Example 6 Early 15 minutes 1 hours 3 hours 5 hours Early 15 minutes 1 hours 3 hours 5 hours One Kim Kyu Kim 469.7 473.2 474.8 476.7 478.2 466.8 466.3 466.9 467.3 467.4 2 Kim ○ 470.3 475.2 476.2 478.1 478.1 470.2 470.1 469.2 470.9 470.4 3 Kim ○ 474.7 478.1 480.4 481.2 483.5 475.4 475.2 474.3 476.1 475.5 4 ○ 464.3 467.6 469.7 469.9 471.8 461.2 460.1 461.3 462.1 461.9 5 This year 462.6 464.7 468.7 469.8 470.0 460.9 460.8 460.0 459.0 461.7

number Subject Melanin index (average of 3 measurements) Comparative Example 7 Early 15 minutes 1 hours 3 hours 5 hours One Kim Kyu Kim 468.7 469.2 469.9 470.3 470.9 2 Kim ○ 469.2 470.7 471.3 471.5 472.0 3 Kim ○ 472.6 472.9 473.3 473.5 473.9 4 ○ 462.5 463.7 464.8 465.3 464.0 5 This year 460.2 462.3 463.7 464.6 463.4

Δ melanin index of Comparative Examples 1 to 7

number Subject △ melanin index (5 hours-early) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 One Kim Kyu Kim 0.10 4.40 4.60 7.70 8.50 0.60 2.20 2 Kim ○ 0.00 2.10 4.70 5.10 7.80 0.20 2.80 3 Kim ○ 0.20 3.30 5.40 5.60 8.80 0.10 1.30 4 ○ 0.20 3.40 5.40 6.10 7.50 0.70 1.50 5 This year 0.20 2.90 3.40 4.90 7.40 0.80 3.20 medium 0.14 3.22 4.70 5.88 8.00 0.48 2.20

As can be seen from the results of Table 4, the △ melanin index increased in Comparative Examples 1 and 2, it can be seen that the instantaneous tanning effect is small due to the small value, △ melanin index in Comparative Examples 3 to 5 Increased but unnatural color was observed when visually observed. In Comparative Examples 6 and 7, there was almost no significant difference in the melanin index.

Melanin index of Examples 1 to 3

number Subject Melanin index (average of 3 measurements) Comparative Example 1 Comparative Example 2 Early 15 minutes 1 hours 3 hours 5 hours Early 15 minutes 1 hours 3 hours 5 hours One Kim Kyu Kim 466.8 472.4 473.0 473.2 474.0 468.7 473.1 474.2 475.2 477.9 2 Kim ○ 470.2 475.1 477.9 480.4 480.9 469.2 475.0 476.0 477.1 478.3 3 Kim ○ 475.4 481.4 483.0 483.1 484.2 472.6 480.2 479.3 480.9 481.2 4 ○ 461.2 465.3 466.7 467.9 468.1 462.5 469.3 470.1 471.0 472.1 5 This year 460.9 465.1 466.3 466.9 467.9 460.2 466.2 467.3 468.9 468.9

number Subject Melanin index (average of 3 measurements) Comparative Example 3 Early 15 minutes 1 hours 3 hours 5 hours One Kim Kyu Kim 466.8 474.5 476.9 477.4 478.5 2 Kim ○ 470.2 477.3 479.5 479.9 481.8 3 Kim ○ 475.4 482.8 484.8 486.9 486.9 4 ○ 461.2 469.7 470.6 473.4 474.8 5 This year 460.9 469.7 470.5 472.4 473.7

Δ melanin index of Examples 1 to 3

number Subject △ melanin index (5 hours-early) Example 1 Example 2 Example 3 One Kim Kyu Kim 7.20 9.20 11.70 2 Kim ○ 10.70 9.10 11.60 3 Kim ○ 8.80 8.60 11.50 4 ○ 6.90 9.60 13.60 5 This year 7.00 8.70 12.80 medium 8.12 9.04 12.24

As can be seen from the results in Table 6, in Example 1 to Example 3, the melanin index was increased, and natural colors were produced even when visually observed. In addition, as can be seen when compared to the △ melanin index of Comparative Examples 3 to 5 of Table 4, using a combination of chicory and Kimnema extract than when using the iron oxide nano-pigment alone, not only high synergistic effect, but also very natural It can be seen that the tanning effect.

Experimental Example 5 Skin Safety Experiment

Skin irritation was evaluated for the cosmetic composition prepared according to the composition of Comparative Example 1, Comparative Example 2, Example 1, Example 2, Example 3. Skin irritation evaluation was conducted through the patch patch test, and the subjects were 19 young women or men in their 20s and 30s. The test method was as follows.

The patch test method was performed by taking 2 mg of each sample, put it in a pin chamber, attach it to the right forearm, remove it after 4 hours, and then determine the side effects of the skin, itching and erythema, and swelling after 1 hour. . The judges were conducted by a professional researcher who had been in the experiment for more than 8 years. The result is as follows.

Average irritancy range = Σ (evaluation index value X number of people of the evaluation value) × 100 Total subjects% Top Criteria

-Evaluation value: +++: 2-stimulus judgment range according to the patch

               ++: 1.5 1: minimum stimulation (less than 10)

                +: 1.0 2: mild stimulation (10-20)

               +-: 0.5 3: Normal stimulus (20.1-30)

               -: 0 4: Severe stimulation

sample Skin irritation evaluation result Average stimulus range (%) Stimulus judgment Remarks +++ ++ + +- - Comparative Example 1 - - One 0 18 2.60 One Minimal stimulation Comparative Example 2 - - One 0 18 2.60 One Minimal stimulation Example 1 - - 0 One 18 1.30 One Minimal stimulation Example 2 - - 0 One 18 1.30 One Minimal stimulation Example 3 - - 0 One 18 1.30 One Minimal stimulation

The composition of the present invention is safe for skin and can be applied to sensitive skin, and provides instant tanning effect and natural self-tanning effect as well as sun protection without exposure to sun rays for a long time.

Claims (4)

Iron oxide nano pigments, chicory and laver extract, UV filter, silicone emulsifier, Cosmetic composition comprising a liquid silicone oil and purified water. The cosmetic composition according to claim 1, which contains 0.2 to 3% by weight of iron oxide nano pigments and 0.8 to 5% by weight of chicory and gemma extracts. The cosmetic composition according to claim 2, which contains 10 to 35% by weight of UV filter, 0.5 to 5% by weight of silicone emulsifier, and 10 to 50% by weight of liquid silicone oil. delete