JP5123090B2 - Makeup remover - Google Patents

Description

  The present invention relates to a two-layer makeup remover, and more specifically, by containing pyrrolidone carboxylate, it is easily mixed uniformly into a cloudy emulsified state. is intended to return to the original state is separated into.

The two-layer makeup remover is widely used as a cosmetic for the purpose of the appearance and beauty of the appearance because of its appearance characteristic of being separated into two layers when left standing. Moreover, it has the functionality which can remove the makeup stains of both the oil-soluble component and the water-soluble component.
The ideal product is easily emulsified by shaking lightly, the emulsification does not break during use, it is completely separated when used the next day, the interface is single and clear, and each phase is It is in a transparent state.

  In order to accelerate the separation, it is disclosed to incorporate a water-soluble inorganic salt or organic acid salt. But it was not enough.

JP 06-261948 A

JP 2005-336089 A

JP2007-269673A

  In fact, even if it is shaken and emulsified, the separation proceeds too quickly during use and the effect as a remover is insufficient, or conversely, when used after one day, the separation is not complete and it becomes cloudy. There was a drawback that the product value was impaired because it was not beautiful in appearance due to the three layers. Further, when a solid inorganic acid salt such as sodium chloride is blended, there is a drawback that precipitation of crystals may be observed.

  Under such circumstances, as a result of intensive studies, the present inventors have found that the above-described drawbacks can be improved by using a specific nonionic surfactant and pyrrolidone carboxylate in combination, and the present invention has been completed. .

  The makeup remover of the present invention is used for the purpose of removing makeup products such as lipstick, mascara, eyeliner and eye color.

The pyrrolidone carboxylate used in the present invention is not particularly limited, but is preferably a sodium salt or a potassium salt, and more preferably a sodium salt. The blending amount is not particularly limited, but is preferably 1 to 10% by weight (hereinafter simply referred to as%), more preferably 2 to 7%. If it is less than 1%, the effect may not be sufficiently exhibited. If it is 10% or more, the effect is not a problem, but it is not economical. Pyrrolidone carboxylate is known to be incorporated into cosmetics as a moisturizing agent, but is not known as a separation promoter for point makeup removers.
Cosmetic Raw Material Dictionary Nikko Chemicals Co., Ltd. November 29, 1991 Page 374, page 375

  The liquid oil used in the present invention is not particularly limited as long as it is liquid at ordinary temperature (20 ° C.). Preferably, the oil component is a liquid oil of origin such as animal oil, vegetable oil, synthetic oil or the like generally used in cosmetics, Examples include hydrocarbons such as volatile oils, fats and oils, ester oils, fatty acids, higher alcohols, silicone oils, fluorine-based oils, lanolin derivatives, and oily gelling agents. Specifically, hydrocarbons such as liquid paraffin, squalane and polyisobutylene, oils and fats such as olive oil, castor oil, mink oil and macadamian nut oil, esters such as jojoba oil, fatty acids such as isostearic acid and oleic acid , Higher alcohols such as oleyl alcohol and isostearyl alcohol, dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, trimethylsiloxysilicic acid, high polymerization degree methylphenylpolysiloxane, cross-linked type Methylpolysiloxane, polyoxy-modified organopolysiloxane, cross-linked polyether-modified methyl polysiloxane, methacryl-modified polysiloxane, stearyl-modified methyl polysiloxane, oleyl-modified methyl polysiloxane, Henyl-modified methylpolysiloxane, polyvinylpyrrolidone-modified methylpolysiloxane, high degree of polymerization dimethylpolysiloxane, polyoxyalkylene / alkylmethylpolysiloxane / methylpolysiloxane copolymer, alkoxy-modified polysiloxane, cross-linked organopolysiloxane, fluorine-modified poly Examples include silicones such as siloxane, fluorine oils such as perfluorodecane, perfluorooctane and perfluoropolyether, lanolin derivatives such as lanolin, lanolin acetate, lanolin fatty acid isopropyl, and lanolin alcohol. Two or more kinds can be used.

  Although it does not specifically limit as a nonionic surfactant of HLB5-10 used for this invention, For example, glycerol fatty acid ester, polyglycerol fatty acid ester, sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxy Examples include ethylene alkyl ether, fatty acid polyoxyethylene glyceryl, polyether-modified silicone, and polyglycerin-modified silicone.

  Specifically, polyglyceryl stearate-2 (HLB5.0: hereinafter, numerical values in parentheses indicate HLB), polyglyceryl-2 oleate (5.5), glyceryl triisostearate-2 (5.5) , Polyglyceryl stearate-4 (6.0), polyglyceryl oleate-4 (6.0), polyglyceryl tristearate-10 (7.5), polyglyceryl trioleate-10 (7.0), sorbitan palmitate (6.7), sorbitan isostearate (5.0), PEG-5 hydrogenated castor oil (6.0), PEG-10 hydrogenated castor oil (6.5), ceteth-2 (8.0), Steareth-2 (8.0), Ores-2 (7.5), Behenez-5 (7.0), (C12-14) Palace-3 (8.0), Di (C12-15) Palace-2 Rin (6.5), Tri (C12-15) Palace-2 phosphate (7.0), Di (C12-15) Palace-6 phosphate (8.0), PEG-10 glyceryl tristearate (5. 0), PEG-10 glyceryl triisostearate (5.0), PEG-10 glyceryl trioleate (5.0), PEG-3 glyceryl isostearate (6.0), PEG-10 glyceryl diisostearate (7. 0), PEG-5 glyceryl isostearate (8.0), PEG-20 glyceryl triisostearate (8.0), PEG-30 glyceryl triisostearate (10.0), and the like.

  Fatty acid polyoxyethylene glyceryl is preferable, and polyoxyethylene glyceryl triisostearate is more preferable. In particular, the number of moles of polyoxyethylene of polyoxyethylene glyceryl triisostearate is more preferably 10 to 30 moles.

  The makeup remover of the present invention is a metal soap, a pH adjuster, an antiseptic, a fragrance, a moisturizer, a powder, an ultraviolet absorber, a thickener, a pigment, an antioxidant, a whitening agent, which is a component used in a skin external preparation. agent, can be appropriately blended components and a chelating agent.

  The dosage form is a two-layer type lotion type in which an oil phase and an aqueous phase are separated in a stationary state and are easily emulsified by shaking lightly.

  The two-layer makeup remover of the present invention containing water, liquid oil, HLB5-10 nonionic surfactant and pyrrolidone carboxylate has very good emulsifiability and separability. It is something you have.

  Next, in order to describe the present invention in detail, examples of formulation and experimental examples of the present invention will be given as examples, but the present invention is not limited thereto. It shows the weight percent and percent of amounts shown in Formulation Examples.

A makeup remover was prepared according to the formulation shown in Table 1, and evaluated for emulsifying properties, separability, and crystal precipitation. The evaluation of emulsifiability, separability, and crystal precipitation was in accordance with the following criteria.

(1) Emulsification ◎: Put a well-vibrated 100 ml base into a container with a diameter of 4 cm and a height of 12 cm, and then cover and shake for 10 times to stand, and after 10 minutes, the droplets cannot be seen visually. .
A: A 100 ml base well shaken is placed in a container having a diameter of 4 cm and a height of 12 cm, and further covered, shaken 10 times, and allowed to stand. After 3 minutes, the droplets cannot be visually observed.
X: A 100 ml base well shaken in a container having a diameter of 4 cm and a height of 12 cm is put, covered, shaken 10 times, and left to stand. After 3 minutes, the droplets can be visually observed.

(2) Separability ◎: In the emulsifiability test of (1), after 20 hours of standing still completely separated, the interface is clearly seen on the separation surface.
○: Although separated after 20 hours of standing in the emulsification test of (1), a layer is slightly observed on the separation surface.
X: In the emulsification test of (1), it was not completely separated after standing for 20 hours, or even if it was separated, a clear interface was not observed on the separation surface.
(3) Crystal precipitation ○: After standing in a refrigerator at about 5 ° C. for 1 week in the emulsifiability test of (1), there is no crystal when the presence or absence of crystal precipitation is confirmed visually.
X: In the emulsifiability test of (1), after standing in a refrigerator at about 5 ° C. for 1 week, there is crystal precipitation when the presence or absence of crystal precipitation is confirmed visually.

Production method: The raw materials in the formulation were mixed uniformly and stirred well to obtain the final base.

As shown in the results of Table 1, sodium pyrrolidonecarboxylate (PCA-Na) has good emulsifiability and separability, but all other salts are not separable and crystals precipitate in the aqueous phase. there, the one in which lack of marketability.

Production method: The raw materials in the formulation were mixed uniformly and stirred well to obtain the final base.

As shown in Table 2, the make-up remover of the present invention was a better result than those containing other surfactants.

Makeup remover A
(Compounding ingredients) (wt%)
(Phase A)
(1) Squalane 20
(2) Liquid paraffin 20
(3) Hydrogenated polyisobutene 5
(4) PEG-10 glyceryl triisostearate (HLB = 5.0)
0.5
(Phase B)
(5) Purified water remaining amount (6) Sodium pyrrolidonecarboxylate 4
(7) Ethanol 5
(8) 1,3-butylene glycol 10
(9) Methylparaben 0.1
(10) Perfume appropriate amount

(Manufacturing method) Phase A was dissolved uniformly, and phase B dissolved uniformly was added thereto and stirred well to obtain a makeup remover.

Makeup remover B
(Compounding ingredients) (wt%)
(Phase A)
(1) Squalane 40
(2) Jojoba oil 5
(3) Hydrogenated polyisobutene 5
(4) Sorbitan isostearate (HLB = 5.0) 0.5
(Phase B)
(5) Purified water remaining amount (6) Sodium pyrrolidonecarboxylate 7
(7) Diglycerin 5
(8) Glycerin 10
(9) Methylparaben 0.3
(10) Perfume appropriate amount

(Manufacturing method) Phase A was dissolved uniformly, and phase B dissolved uniformly was added thereto and stirred well to obtain a makeup remover.

Makeup remover C
(Compounding ingredients) (wt%)
(Phase A)
(1) Squalane 20
(2) Decamethylcyclopentasiloxane 20
(3) Hydrogenated polyisobutene 20
(4) Polyether-modified silicone (HLB = 6.5) 1.0
(Phase B)
(5) Purified water Residual amount (6) Sodium pyrrolidonecarboxylate 2
(7) Ethanol 2
(8) 1,3-butylene glycol 5
(9) Methylparaben 0.3
(10) Perfume appropriate amount

(Manufacturing method) Phase A was dissolved uniformly, and phase B dissolved uniformly was added thereto and stirred well to obtain a makeup remover.

  All of the two-layer makeup removers obtained in Examples 3 to 5 were excellent in both emulsifiability and separability without precipitation of crystals.

The present invention is a two-layer makeup remover characterized by containing water, liquid oil, HLB 5-10 nonionic surfactant and pyrrolidone carboxylate, and is emulsifiable, separable, salt precipitation It is useful as an excellent two-layer makeup remover.

Claims (1)

A two-layer makeup remover comprising a liquid oil and an aqueous phase containing the following four components .
(A) Water
(B) Liquid oil
(C) One or more selected from PEG-10 glyceryl triisostearate, PEG-20 glyceryl triisostearate, and PEG-30 glyceryl triisostearate (D) 2 to 7% by weight of sodium pyrrolidonecarboxylate