Back to Ingredient Dictionary

Carboxylic Acid

Description

Carboxylic acid is a versatile and widely used class of organic compounds in skincare formulations. Characterized by the presence of a carboxyl group (-COOH), these acids play crucial roles in various skin functions and treatments. They are naturally occurring in many fruits and plants, but can also be synthesized for cosmetic use.

In skincare, carboxylic acids serve multiple purposes. They act as pH adjusters, helping to maintain the optimal acidity of products. This is essential for preserving formula stability and enhancing skin compatibility. Certain carboxylic acids, like alpha-hydroxy acids (AHAs), function as exfoliants, promoting cell turnover and improving skin texture.

These compounds also exhibit humectant properties, attracting and retaining moisture in the skin. Some carboxylic acids possess antimicrobial qualities, contributing to product preservation and potentially addressing acne-related concerns. Additionally, they can enhance the penetration of other active ingredients, improving overall product efficacy.

Common examples in skincare include citric acid, lactic acid, and salicylic acid. The concentration and specific type of carboxylic acid used determine its effects and potential for skin irritation, necessitating careful formulation and consideration of individual skin types.