JPH0569804B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a novel facial cleanser, and more specifically,
The present invention relates to a facial cleanser that has high cleaning properties against makeup stains from lipstick, foundation, etc. and sebum stains, and is hypoallergenic to the skin. [Conventional technology] Conventionally, makeup stains from lipstick, foundation, eye shadow, mascara, etc. contain large amounts of oil or solid oil, which cannot be soluble in facial cleansing foams made mainly of soap. It has insufficient emulsifying ability and cannot remove makeup stains. Therefore, makeup stains have been removed using cleansing creams, cleansing oils, gel-like cleansing agents, etc. mainly containing oily bases. On the other hand, when dirt such as fat and keratin proteins get into the pores of the skin and solidify, causing inflammation within the hair follicles, as in the case of acne, commonly used facial cleansers do not remove the solid dirt that clogs the pores. To remove it, the detergency is not sufficient, and keratolytic agents such as salicylic acid and sulfur are commonly used in combination. [Problems to be Solved by the Invention] As mentioned above, in order to remove solid oils such as makeup and sebum and strong oily stains, ordinary facial cleansers based on fatty acid soaps, anionic and nonionic active agents, Cleanability is not sufficient. On the other hand, cleansing creams with oil-based bases have the disadvantage that when used in hot and humid places such as bathrooms, the emulsification state deteriorates due to the inclusion of water, making it difficult to remove stains or causing separation. It had [Means for Solving the Problem] As a result of intensive research to solve the above problems, the present inventors have found that by combining a specific nonionic surfactant and a phosphate ester surfactant, it has a high resistance to oily stains. The present inventors have discovered that a foaming facial cleanser that has cleansing properties, is less irritating to the skin, and is stable even in humid places can be obtained, leading to the completion of the present invention. That is, the present invention provides (A) general formula ()

[Formula, R ₁ represents a saturated or unsaturated hydrocarbon group with 4 to 30 carbon atoms derived from a linear secondary alcohol or a branched primary alcohol, x is 0 to 30,
y represents an integer from 0 to 30. However, x+y≧1) and a nonionic activator whose HLB is 3 or more and less than 8, and (B) general formula () or ()

[ka]

〔Example〕

Next, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these Examples. Example 1 Various cleaning compositions having the compositions shown in Table 1 were prepared, and their performance was evaluated by the following method. The results are shown in Table 1. (1) Cleaning power test method A Artificially contaminated cloth method (a) Manufacture of artificially contaminated cloth Uniformly disperse artificial oily stains in a solvent, wet a cotton cloth with this solution and dry it to evenly remove the artificial oily stains. Make it adhere. This cloth is 10cm x 10
A test piece of cm was used in the experiment. (b) Cleaning conditions and cleaning method Dissolve 3% by weight of the cleaning composition in 4°DH hard water to make 500ml. Set of 5 pieces of artificially contaminated cloth, 100 rpm, 30
C., stirred for 5 minutes, rinsed under running water, iron-pressed, measured reflectance, determined cleaning rate, and evaluated according to the following criteria. B. Pork skin method Apply lipstick evenly within a 1 cm diameter circle on pig skin (2 cm x 2 cm), and after 30 minutes, apply detergent composition 20
Add 5 drops of wt% aqueous solution and use a flat glass rod to
After pine surge for seconds, rinse with running water, dry, extract remaining lipstick from pigskin with hexane, and UV
The cleaning rate was determined by measurement and evaluated based on the following criteria. Judgment criteria ◎ 80% or more ○ 70% or more and less than 80% △ 60% or more and less than 70% × Less than 60% (2) Sensory evaluation Seven expert panelists evaluated the detergent composition prepared here by adding a moderate amount of tap water to the detergent composition. Dilute and whisk;
They washed their hands and faces and performed a sensory evaluation. A Foaming criteria ◎ Good lathering ○ Normal △ Slightly lathering × Poor lathering B Criteria for determining moisturizing and sticky feeling after washing ◎ No moisturizing or sticky feeling ○ Normal △ Slightly not moisturizing , Tsutsuparu × Tsutsuppuru

【table】

〔Effect of the invention〕

As detailed above, in the present invention, by combining a specific nonionic active agent and a phosphate ester surfactant, it is possible to provide a highly cleansing facial cleansing foam that can also remove makeup stains. In addition, the facial cleanser of the present invention moisturizes the skin and is hypoallergenic despite its high cleansing properties. Furthermore, the drawback of regular cleansing creams is that
It can be used even in bathrooms with a lot of moisture, and by using the face wash of the present invention, it is possible to effectively remove dirt from pores that causes acne.

Claims (1)

[Claims] 1 (A) General formula () [Chemical formula] (In the formula, R ₁ is a saturated or unsaturated hydrocarbon having 4 to 30 carbon atoms derived from a linear secondary alcohol or a branched primary alcohol. represents a group, x is 0 to 30,
y represents an integer from 0 to 30. However, x+y≧1) and a nonionic surfactant whose HLB is ₃ or more and less than ₈ ; and R ₄ each have 8 to 18 carbon atoms
represents a linear or branched alkyl group or alkenyl group, and X and Y each represent a hydrogen atom, an alkali metal, ammonium, or an alkanolamine having a hydroxyalkyl group having 2 to 3 carbon atoms,
l, m and n each represent a number from 0 to 10. ) A facial cleanser characterized by containing a phosphate ester surfactant represented by: 2 The total content of ingredients (A) and (B) in the facial cleanser is 10
90% by weight, and the weight ratio of component (A) to component (B) is (A):(B)=1:9 to 9:1.