Water-in-oil emulsion comprising pigments in the water phase

Abstract

Provided is a composition and especially a cosmetic composition comprising: A) an oily phase and B) an aqueous phase which comprises: a) water, b) a pigment, c) a modified phospholipid, and d) an alkyl substituted diol comprising 5 or more carbons; wherein the composition is in the form of an water-in-oil emulsion, and wherein the pigment essentially remains in the water phase. Also provide is a method of producing the composition which comprises: 1) obtaining a mixture of a modified phospholipid and an alkyl substituted diol comprising 5 or more carbons in the alkyl chain; 2) obtaining a mixture of water and a pigment; 3) combining the mixture of the modified phospholipids and the alkyl substituted diol with the mixture of the pigment and water; 4) obtaining an oil composition; and 5) combining the mixture from 3) with the oil composition of 4) to form an water-in-oil emulsion.

Description

TECHNICAL FIELD[0001]The present disclosure is concerned with water-in-oil emulsions that comprise pigments, wherein the pigments are in the water or inner phase of the emulsion, and a process for fabricating the emulsions. It has been found according to the present invention that a combination of a modified phospholipid along with an alkyl substituted diol having an alkyl chain of at least 5 carbon atoms makes it possible to essentially maintain pigments including untreated pigments in the water phase. The present disclosure is especially concerned with personal care products. The disclosure further relates to the use of the composition, in particular for treating, caring for, making up and / or cleaning the skin, superficial body growths (hair, eyelashes, nails) and / or mucous membranes. Also, compositions of the present disclosure are suitable for topical application, and in particular is a cosmetic and / or dermatological composition.[0002]Additional advantages and other features of ...

AI Technical Summary

Benefits of technology

The patent text describes a solution for creating water-in-oil emulsions with pigments that are stable and evenly dispersed in the water phase. The solution involves using a combination of a modified phospholipid and an alkyl substituted diol comprising 5 or more carbons in the alkyl chain. This combination prevents the piglianoids from agglomerating in the water phase and ensures consistent shading and enhanced color intensity. The modified phospholipid attaches to the pigment, while the alkyl chain of the diol attaches to both the pigment and the water phase. The hydrophobic and hydrophilic parts of the modified phospholipid and the alkyl substituted diol ensure stability and even dispersion of the pigment in the water-in-oil emulsion.

Problems solved by technology

When used as part of facial powders, pigments provide coverage of complexion that is considered by the user as undesirable.

Accordingly, a challenge facing the personal care industry is to provide an efficient formulation that would maintain pigments and especially untreated pigments in the water phase of a water-in-oil emulsion.