The Procter Gamble Company

Wan Ting Chung

Matthew Clair Ehrman

Zhi Yan Chew

Shikhar Gupta

Dissanayake Mudiyanselage Mahathma Bandara Dissanayake

Tomohiro Hakozaki

Joseph Michael Zukowski

John Erich Oblong

Low-pH, aqueous skin care composition, comprising: a) about 0.1% to about 10% of a hydroxycinnamic acid (HCA); b) about 0.1% to about 10% of a polar emollient; c) from about 1.5% to less than 20% of a co-solvent with a Hansen solubility parameter distance of less than 15 from the—hydroxycinnamic acid (HCA); and d) water, wherein the pH of the composition is about 5.0 or less, and wherein the composition meets at least one of the following conditions (i)-(iii): (i) the composition further contains from about 0.1% to about 10% of a vitamin Bcompound; (ii) the weight ratio between HCA and the polar emollient is from about 1:1 to about 1:10; and (iii) the composition further contains from about 0.1% to about 5% of a sensory improving ingredient selected from the group consisting of: sugar alcohols, sugar-based emulsifiers, modified sugar derivatives, and mixtures thereof.

Skin care composition

A low-pH, aqueous skin care composition, comprising: a) 0.1 to 10% of a hydroxycinnamic acid (HCA); and b) 0.1% to 5% of a hydrotrope selected from the group consisting of: phenolic acid, derivatives of phenolic acid, phenolic alcohol, derivatives of phenolic alcohol, and mixtures thereof; wherein the hydrotrope has a pKA less than the formula pH; and wherein the hydrotrope has the partition coefficient (logP) of less than 3.0; c) water, and wherein the pH of the composition is less than 5.0.

Disclosed is a method of improving the appearance of skin with a low-pH skin care composition that contains hydroxycinnamic acid (HCA) and a vitamin B3 compound in a synergistic combination.

Method of improving the appearance of skin

A method for reducing the appearance of post-acne marks, lightening dark spots and discoloration, fading post-acne marks faster and/or preventing appearance of new post-acne marks by applying a skin care composition. The skin care composition contains a vitamin Bcompound, hydroxycinnamic acid, and water at a pH of less than 5.0.

Growing community of inventors

Singapore, Singapore

Wan Ting Chung