CN117771117A - Cosmetic product - Google Patents

Cosmetic product Download PDF

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Publication number
CN117771117A
CN117771117A CN202311182688.5A CN202311182688A CN117771117A CN 117771117 A CN117771117 A CN 117771117A CN 202311182688 A CN202311182688 A CN 202311182688A CN 117771117 A CN117771117 A CN 117771117A
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CN
China
Prior art keywords
cosmetic
component
salt
acid
amount
Prior art date
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Pending
Application number
CN202311182688.5A
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Chinese (zh)
Inventor
吉羽崚
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Shiseido Co Ltd
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Shiseido Co Ltd
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Publication of CN117771117A publication Critical patent/CN117771117A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a cosmetic. The present invention provides a cosmetic which suppresses discoloration of alkoxysalicylic acid or a salt thereof even under severe storage conditions and is excellent in usability. [ solution ] A cosmetic comprising (A) an alkoxysalicylic acid or a salt thereof having a specific structure, and (B) a reducing sugar, wherein the amount of component (B) to be blended is 0.003-8% by mass relative to the total amount of the cosmetic.

Description

Cosmetic product
Technical Field
The present invention relates to a cosmetic comprising alkoxysalicylic acid or a salt thereof.
Background
It has been reported that alkoxysalicylic acid (or a salt thereof) has an effect of inhibiting melanogenesis, and a skin external preparation containing the same exerts an excellent whitening effect. However, the composition containing alkoxysalicylic acid may be discolored when stored under severe conditions for a long period of time.
As a means for suppressing discoloration of alkoxysalicylic acid, a technique of using a saponin or the like in combination has been proposed (for example, patent document 1). In addition, it is known that sodium metabisulfite is used in combination with inorganic salts such as sodium metabisulfite, but sodium metabisulfite may also generate unpleasant odor, and particularly, the blending amount of a fragrance-free cosmetic is limited.
In order to improve the stability of hydroquinone, a technique of combining 1 or more selected from the group consisting of a polyhydric alcohol, a reducing sugar and a sugar alcohol, which stabilize hydroquinone by forming a loose complex with hydroquinone, has been proposed (reference 2).
Reducing sugars are known to cause maillard reactions that produce brown materials when present in the presence of amino compounds and the like.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 8-217660
Patent document 2: japanese patent laid-open No. 2008-297217
Disclosure of Invention
The inventors have surprisingly found that: by combining the alkoxysalicylic acid or a salt thereof with a specific amount of a reducing sugar, discoloration of the alkoxysalicylic acid or a salt thereof can be suppressed. The present invention has been made based on these findings.
According to the present invention, the following invention is provided.
[1] A cosmetic comprising (A) an alkoxysalicylic acid represented by the formula (a) or a salt thereof and (B) a reducing sugar,
(wherein R is a Alkyl groups having 1 to 6 carbon atoms
(B) The amount of the components is 0.003 to 8% by mass based on the total amount of the cosmetic.
[2]According to [1]]The cosmetic comprises R a Is methyl or ethyl.
[3] The cosmetic according to [1] or [2], wherein the component (A) is a potassium 4-methoxysalicylate.
[4] The cosmetic according to [1] or [2], wherein the component (B) is glucose or fructose.
[5] The cosmetic according to [1] or [2], wherein the component (A) is incorporated in an amount of 0.1 to 10% by mass relative to the total amount of the cosmetic.
[6] The cosmetic according to [1] or [2], wherein the blending amount of the component (B) is 0.003 to 8 in terms of mass ratio to the blending amount of the component (A) ((B)/(A)).
[7] The cosmetic according to [1] or [2], wherein the pH is 6 to 11.
[8] The cosmetic according to [1] or [2], wherein the blending amount of the component (B) is 0.1 to 3% by mass relative to the total amount of the cosmetic.
According to the present invention, it is possible to provide a cosmetic which suppresses discoloration of a cosmetic containing an alkoxysalicylic acid or a salt thereof even under severe storage conditions and which is excellent in usability.
Detailed Description
The present invention relates to a cosmetic comprising (A) an alkoxysalicylic acid or a salt thereof having a specific structure and (B) a reducing sugar, wherein the amount of the reducing sugar to be blended is 0.01 to 10% by mass relative to the total amount of the cosmetic.
The pH of the cosmetic of the present invention is preferably 6 to 11, more preferably 6.5 to 11. In the case where the pH of the cosmetic of the present invention is more than 7, the cosmetic can exert an effect, and is more preferably 7.5 to 11, still more preferably 8 to 11, and most preferably 9 to 11.
(A) Alkoxy salicylic acids or salts thereof
The cosmetic of the present invention contains an alkoxysalicylic acid represented by the formula (a) or a salt thereof (hereinafter, sometimes referred to as component (a): the same applies to other components).
Wherein R is a The alkyl group having 1 to 6 carbon atoms may be a straight chain or a branched chain.
As R a Examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, sec-butyl, and the like, and methyl or ethyl is preferable.
Substituent OR a The position of (2) is not particularly limited, but is preferably 3, 4 or 5, more preferably 4, of salicylic acid.
Examples of the alkoxysalicylic acid represented by the formula (a) include 3-methoxysalicylic acid, 3-ethoxysalicylic acid, 4-methoxysalicylic acid, 4-ethoxysalicylic acid, 4-propoxysalicylic acid, 4-isopropoxycalicylic acid, 4-butoxysalicylic acid, 5-methoxysalicylic acid, 5-ethoxysalicylic acid, 5-propoxysalicylic acid, and the like, and 4-methoxysalicylic acid is preferable.
Alkoxy salicylic acid is a known substance, for example, 5-methoxy salicylic acid can be easily synthesized by the method described in "Beil,10227", and 4-methoxy salicylic acid can be easily synthesized by the method described in "Beil, 10379". Further, it is available as a reagent from Aldrich company or the like.
(A) The component (a) is also preferably a salt of an alkoxysalicylic acid represented by the formula (a). The type of salt is not particularly limited as long as it is a pharmaceutically acceptable salt, and examples thereof include alkali metal salts such as sodium salt, potassium salt, and lithium salt; alkaline earth metal salts such as calcium salts and magnesium salts; an ammonium salt; the amino acid salt is preferably a potassium salt, and further preferably a 4-methoxysalicylic acid potassium salt from the viewpoints of cosmetic effect, easiness of obtaining, and the like.
(A) The components may be blended in 1 or 2 or more. (A) The blending amount of the component (a) is appropriately selected depending on the application and the combination of the component (a) with other blending components, and is preferably 0.1 to 10% by mass, more preferably 0.3 to 8% by mass, and even more preferably 0.5 to 3.5% by mass, based on the total amount of the cosmetic, in order to exert the functions and effects of the component (a), particularly the whitening effect.
(B) Reducing sugar
The cosmetic of the present invention comprises (B) a reducing sugar. (B) The component (a) is a monosaccharide or oligosaccharide having a functional group which is reducing with an aldehyde group or a ketone group, and specifically, glucose, fructose, galactose, mannose, and galactose are exemplified. The component (B) is preferably glucose or fructose.
It is known that the component (A) may be discolored due to long-term storage under conditions such as light exposure. As described above, it is known that the component (B) may cause maillard reaction to produce a browning substance, and therefore, it is not generally used in combination with other components that easily cause discoloration in cosmetics. The inventors have surprisingly found that: by combining the component (a) and the component (B), the discoloration can be significantly suppressed contrary to the above-described cognition.
(B) The components may be blended in 1 or 2 or more. (B) The blending amount of the components is preferably 0.003 to 8% by mass, more preferably 0.005 to 4% by mass, still more preferably 0.008 to 3% by mass, and still more preferably 0.5 to 2.5% by mass, based on the total amount of the cosmetic. Within this range, both discoloration and tackiness originating from the component (B) can be suppressed.
(B) The amount of the component (A) to be blended is preferably 0.003 to 8, more preferably 0.007 to 4, still more preferably 0.1 to 3, still more preferably 0.5 to 2, in terms of mass ratio ((B)/(A)). Within this range, discoloration can be more effectively suppressed.
(C) Water and its preparation method
The cosmetic product of the present invention preferably contains water. As the water, water used in cosmetics, quasi drugs, etc., for example, purified water, ion-exchanged water, tap water, etc. can be used.
The amount of water to be blended is preferably 20 to 95% by mass, more preferably 60 to 90% by mass, based on the total amount of the cosmetic of the present invention.
In addition to the above components, the cosmetic of the present invention may be appropriately blended with components ordinarily used in cosmetics, for example, oily components, ultraviolet absorbers, surfactants, moisturizers, thickeners, polyols, powder components, synthetic resin emulsions, pH adjusters, antioxidants, preservatives, pharmaceutical agents, and the like, as required.
The cosmetic of the present invention is free of solubilizing systems such as lotions and liquids; emulsifying systems such as emulsions and creams; examples of the dispersion system of the makeup cosmetic include a dressing, jelly, and ointment.
The cosmetic of the present invention can be manufactured by a conventional method. In the case where the cosmetic of the present invention is an emulsified cosmetic, the method of emulsification is not particularly limited.
Examples
The present invention will be specifically described based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the content is expressed as mass% relative to the total amount.
Examples 101 to 108, 201 and 301 and comparative examples 101 to 105, 201 and 301
Cosmetics of examples 101 to 108, 201, and 301 and comparative examples 101 to 105, 201, and 301 were prepared in the proportions shown in tables 1 to 3. The pH of the obtained cosmetics is shown in tables 1 to 3.
TABLE 1
TABLE 2
TABLE 3
[ evaluation of color aberration ]
Immediately after the cosmetics of examples and comparative examples were prepared, the values of L, a and b were measured for color by using a color difference meter ("spectrophotometer CM-2002", konica Minolta, inc.) and the color difference Δe from the measured value was calculated from the measured value and the measured value when ion-exchanged water was used 0 . Further, after each of the sample tubes was placed in a 50ml sample tube and left for 1 week under a high-illuminance environment of 6000Lx or more, color measurement was performed in the same manner as described above, and a color difference ΔE was calculated from the measured value obtained when ion-exchanged water was used 1w . Then, ΔE is calculated 1w -ΔE 0 . These results are shown in tables 1 to 3.
[ evaluation of discoloration Rate ]
The comparative examples containing no component (B) having the same blending amount of component (A) and almost the same pH value were calculated by taking as a reference (the reference is comparative example 101 in Table 1, comparative example 201 in Table 2, and comparative example 301 in Table 3) as (ΔE 1w -ΔE 0 ) /(reference porosity (. DELTA.E) 1w -ΔE 0 ) 100), thereby calculating the discoloration rate. The results obtained are shown in tables 1 to 3.
The reference discoloration rate was 100%. The lower the value of the discoloration rate, the higher the discoloration inhibition effect is considered.
[ evaluation of usability ]
The cosmetics of examples and comparative examples were applied to the skin by 10 panelists and evaluated for "no sticky feeling". Based on the evaluation of each panelist, the following criteria were determined. The results obtained are shown in tables 1 to 3.
A: panelists 8-10 had no sticky responses.
B: panelists 6-7 had no sticky responses.
C: panelists 3-5 answers were non-sticky.
D: panelists 1-3 had no sticky responses.

Claims (8)

1. A cosmetic comprising (A) an alkoxysalicylic acid represented by the formula (a) or a salt thereof and (B) a reducing sugar,
wherein R is a Is alkyl with 1 to 6 carbon atoms,
(B) The amount of the components is 0.003 to 8% by mass based on the total amount of the cosmetic.
2. The cosmetic according to claim 1, wherein R a Is methyl or ethyl.
3. The cosmetic according to claim 1 or 2, wherein component (a) is a potassium 4-methoxysalicylate.
4. The cosmetic according to claim 1 or 2, wherein component (B) is glucose or fructose.
5. The cosmetic according to claim 1 or 2, wherein the component (a) is incorporated in an amount of 0.1 to 10% by mass relative to the total amount of the cosmetic.
6. The cosmetic according to claim 1 or 2, wherein the blending amount of component (B) is 0.003 to 8 in terms of mass ratio to the blending amount of component (A) ((B)/(A)).
7. The cosmetic according to claim 1 or 2, having a pH of 6 to 11.
8. The cosmetic according to claim 1 or 2, wherein the blending amount of the component (B) is 0.1 to 3% by mass relative to the total amount of the cosmetic.
CN202311182688.5A 2022-09-27 2023-09-14 Cosmetic product Pending CN117771117A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022154037A JP2024048152A (en) 2022-09-27 2022-09-27 Cosmetics
JP2022-154037 2022-09-27

Publications (1)

Publication Number Publication Date
CN117771117A true CN117771117A (en) 2024-03-29

Family

ID=90393198

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311182688.5A Pending CN117771117A (en) 2022-09-27 2023-09-14 Cosmetic product

Country Status (2)

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JP (1) JP2024048152A (en)
CN (1) CN117771117A (en)

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