JPH0624932A - Lip coat - Google Patents

Abstract

(57) [Summary] [Purpose] Prevents lipstick from falling off by applying it on a normal lipstick, that is, it improves makeup lasting, is non-greasy and easy to remove after makeup, and gives irritation to the lips. Provide no lip coat. [Structure] In the structural formula (R ₃ Si) ₂ O.nSiO ₂ (R.:alkyl group), the alkyl group is a methyl group (CH ₃
.) And / or ethyl group (C ₂ H _5. ) And n is 1
A solid silicone alkylsiloxysilicate component of 10 to 80% by weight and a viscosity of 10 cs (25 ° C).
C) The following low-viscosity silicone oil component is blended in an amount of 20 to 90% by weight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lip coat, and more specifically, a cosmetic containing a combination of a solid alkylsiloxysilicate and a low-viscosity silicone oil having a viscosity of not more than a specific value, on a conventional lipstick. The present invention relates to a lip coat which can be applied and used to prevent lipstick from falling off, that is, to have excellent makeup lasting properties, remove stickiness, and can be easily removed after makeup without causing irritation to lips.

[0002]

2. Description of the Related Art A lip coat or lip sealer is a composition which is applied and used on a lipstick to prevent the lipstick from falling off, that is, to improve makeup lasting. Conventionally, the lip coat is mainly composed of a film forming agent, a solvent, and a film adjusting agent, and three types of resin type, wax type and latex type are known.

(1) Resin types include organic solvents such as ethanol and isopropyl alcohol as solvents, resins soluble in solvents such as shellac, rosin and rosin ester as film forming agents, glycerin and propylene glycol as film adjusting agents. Solvent-soluble polyhydric alcohols and / or animal-oil and vegetable oils such as mink oil, castor oil and avocado oil, or solvent-soluble oils such as synthetic esters.

(2) Wax types include low-boiling isoparaffin as a solvent, solvent-soluble waxes such as ceresin, carnauba wax, and microcrystalline wax as a film forming agent, and squalane, lanolin, jojoba oil, and vaseline as a film adjusting agent. Oils that are soluble in animal and plant mineral oils or synthetic ester solvents.

(3) The latex type is water as a solvent, the film forming agent is an ethyl acrylate / ethyl methacrylate copolymer, an octyl acrylate / styrene copolymer object, a methyl methacrylate / butyl acrylate / octyl acrylate copolymer. Latex or emulsion latex of objects etc., cosmetic base such as polyhydric alcohol soluble in solvents such as glycerin and propylene glycol for film modifier (standard of cosmetic raw materials), external regulation of cosmetics (standard of non-cosmetic raw material ingredients), etc. The components listed in 1 are known and used.

[0006]

However, these known lip coats prevent the lipstick from falling off, that is, are inferior in the effect of makeup lasting, promote stickiness, and are difficult to remove after makeup, It is not enough to irritate the skin, peels off during makeup, etc. and it is not applied to the lipstick to prevent it from falling off by applying it on the lipstick. It has been desired to develop a lip coat that is easy and does not stimulate the lips.

[0007]

[Means for Solving the Problems] However, considering the actual situation,
As a result of intensive studies, the present inventors have found that a part or all of a film forming agent for a lip coat contains a combination of an alkylsiloxysilicate and a low viscosity silicone oil as a part or all of a solvent, and a low viscosity silicone oil as a film modifier. Use by applying a synthetic ester that dissolves in, or by combining alkylsiloxysilicate in part or all of the film-forming agent with low-viscosity silicone oil in part or all of the solvent, and applying it on the lipstick. The inventors have found that it is possible to obtain a lip coat that prevents lipstick from falling off at least, that is, has excellent makeup lasting properties, removes stickiness, is easy to remove after makeup, and does not irritate lips. No combination of solid alkylsiloxysilicates and low viscosity silicone oils has been known in the past. That is, the present invention provides (a) and (b) (a) a solid alkylsiloxysilicate (b) a low-viscosity silicone oil having a viscosity of 10 cs (25 ° C.) or less, and provides a lip coat. It is a thing.

The alkylsiloxysilicate of (a) used in the present invention is usually a white powder or a lump in a solid state at room temperature and is a trialkylsiloxysilicate (R ₃ Si) ₂ O.nSiO ₂ and an alkyl of R. The group is a methyl group (CH ₃ ·) and / or an ethyl group (C ₂ H ₅ ·)
And n is 1 to 5. The viscosity of (b) is 10 cs
The low-viscosity silicone oil having a temperature of (25 ° C.) or lower is methylpolysiloxane [(CH ₃ ) ₂ SiO] n, and n is a cyclic polymer having 3 to 6 and / or methylpolysiloxane (CH ₃ ).
_{3 SiO - [(CH 3)} 2 SiO] n-OSi (C
H ₃ ) ₃ and n is a chain polymer having 1 to 12.

The alkylsiloxysilicate is preferably 10 to 80% by weight, more preferably 30 to 80% by weight in the total composition.
If the amount is 60% by weight and less than 10% by weight, the effect of the present invention cannot be obtained, and if it exceeds 80% by weight, liquidity is lost and usability as a cosmetic is impaired, which is not preferable. Viscosity 10
A low-viscosity silicone oil having a viscosity of cs or less is preferably added in an amount of 20 to 90% by weight, more preferably 40 to 70% by weight in the total composition. If it exceeds%, the content of the film-forming agent component is reduced and the effect of the present invention cannot be obtained, which is not preferable. The lip coat of the present invention comprises a solid alkyl siloxy silicate as an essential component and a viscosity of 10 cs.
In addition to low-viscosity silicone oil (25 ° C) or lower, silicone oil having a viscosity of 10cs (25 ° C) or higher, wax and other components may be contained, and legal dyes, synthetic esters, oils and fats, beauty ingredients, and fragrances. , Ingredients such as antioxidants, antiseptics, ultraviolet absorbers, etc. listed in cosmetic bases, external regulations, etc., or ingredients permitted for use in cosmetics can be appropriately selected and blended.

[0010]

The present invention will be described below with reference to examples, but the present invention is not limited to the formulation and viscosity of these examples. Example 1 Ingredient name (% by weight) Inventive product 1 (1) Trimethylsiloxysilicate 45.0 (2) Decamethylcyclopentasiloxane (4.0cs) 52.0 (3) Tridecyl isononanoate 3.0 (4) Red No. 225 Total trace amount 100.0 (production method) a. (1) is mixed with (2) and dissolved. b. (4) is mixed and dissolved in (3). c. Add b to a and stir-mix to homogenize. d. Fill c into a container.

Example 2 Ingredient name (% by weight) Inventive product 2 (1) Trimethylsiloxysilicate 30.0 (2) Octamethylcycloheptasiloxane (2.3cs) 35.0 (3) Methylpolysiloxane (2. 0cs) 35.0 Total 100.0 (Production method) a. (1) to (3) are mixed with stirring to dissolve uniformly. b. Fill a container with a.

[0012]

[Reference example]

Reference Example 1 Ingredient name (wt%) Comparative product 1 (1) Shellac 12.0 (2) Ethanol 84.0 (3) Propylene glycol 4.0 Total 100.0 (Production method) a. (1) is mixed with (2) and dissolved. b. Add (3) to a and stir-mix to homogenize. c. Fill b into the container.

Reference Example 2 Ingredient name (% by weight) Comparative product 2 (1) Polyethylene powder 10.0 (2) Microcrystalline wax 8.0 (3) Isoparaffin 77.0 (4) Vaseline 5.0 Total 100.0 (Production method) a. (1) and (2) are dissolved in (3) and (4) with heating. b. Fill a container with a and cool.

Reference Example 3 Ingredient name (% by weight) Comparative product 3 (1) Ethyl acrylate / ethyl methacrylate copolymer emulsion 60.0 (2) Water 33.0 (3) Glycerin 7.0 Total 100.0 (Production method) a. Mix (1) with (2). b. Add (3) to a and stir-mix to homogenize. c. Fill b into the container.

[0015]

[Evaluation] Invention products 1 and 2 obtained in Examples 1 and 2,
Regarding Comparative Products 1 to 3 obtained in Reference Examples 1 to 3, Female 2
A use test by 0 persons was conducted and evaluated. (Evaluation Criteria) Good 3 points Normal 2 points Poor 1 point (Judgment) Average point 2.5 points or more ………………… ○ Average point 1.5 or more and less than 2.5 points △ △ Average point 1.5 Less than points …………………… ×

[0016]

[0017] As a result, in Comparative Product 1, it is difficult to remove after application and the lips have significant irritation, in Comparative Product 2, there is significant sticky irritation on the lips, and in Comparative Product 3, there is stickiness and poor makeup lasting. Excellent in stickiness, sticky, easy to remove after makeup, and no irritation to lips.

[0018]

As described above, the lip coat of the present invention is
When it is used on a lipstick, it prevents the lipstick from falling off, that is, it makes the makeup last longer, is easy to remove after makeup, and is not very irritating to the lips.

Claims (3)

[Claims] 1. The following structural formulas are given: (a) and (b) (a) a solid alkylsiloxysilicate (b) containing a low viscosity silicone oil having a viscosity of 10 cs (25 ° C.) or less. And lip coat. Structural formula (a) of (R ₃ Si) ₂ O.nSiO ₂ R .: alkyl group 2. The alkyl group of the alkylsiloxysilicate is a methyl group (CH ₃ ) and / or an ethyl group (C
₃ H ₅ ) and n is 1-5.
Lip coat as described in the item. 3. The component (a) is 10 to 80% by weight, (b)
The lip coat according to claim 1 or 2, wherein the content of the component is 20 to 90% by weight.