Cosmetic

Abstract

A cosmetic containing L-ascorbic acid 2-phosphate sodium salt that excels in long-term storage stability. In particular, there is provided a cosmetic characterized in that L-ascorbic acid 2-phosphate sodium salt (A) and at least one compound (B) selected from the group consisting of arginine, urea and triethanolamine are contained in a mixing mass ratio of (A):(B) ranging from 1:0.001 to 1:0.5.

Description

cosmetic technical field The present invention relates to a cosmetic containing sodium L-ascorbic acid-2-phosphate, and more specifically, to a cosmetic product that suppresses yellowing and off-flavor accompanying the decomposition of sodium L-ascorbic acid-2-phosphate and preserves it by containing a specific component. Cosmetics with excellent stability. Background technique So far, for the purpose of improving or preventing skin darkening caused by sun exposure, brown spots caused by pigmentation, freckles, etc., lotions, lotions, creams, beauty essences, masks, washing products, dispersions, and ointments are used , liquid, aerosol, paste and other whitening cosmetics or anti-aging cosmetics, in which L-ascorbic acid is widely used as an active ingredient. However, since L-ascorbic acid is relatively easy to be oxidized or hydrolyzed, it is easy to decompose when used directly in combination with cosmetics, which may lead to the improvement or prevention of brown sp...

AI Technical Summary

Problems solved by technology

However, when L-ascorbic acid-2-sodium phosphate is used in combination with a divalent or higher salt, the decomposition of L-ascorbic acid-2-sodium phosphate, especially when stored at a high temperature of 30°C or higher for a long time, occurs. Insufficient inhibition of yellowing or off-flavors

In addition, when L-ascorbic acid-2-sodium phosphate, a compound having a sulfhydryl group or a disulfide bond, and an amino acid having sulfurous acid and a hydroxyl group are used in combination, yellowing accompanying the decomposition of L-ascorbic acid-2-sodium phosphate can be suppressed, but The effect of suppressing off-flavor is not sufficient

In addition, under high-temperature storage conditions above 30°C, there is a disadvantage of producing an odor due to the compound itself having a sulfhydryl group or a disulfide bond used in combination as a storage stabilizer.