Ingredient

PCA

Neutral in 2

What is PCA?

PCA, or Pyrrolidone Carboxylic Acid, is a naturally occurring substance found in various proteins and living cells. It is often derived from amino acids and is commonly used in cosmetics and personal care products.

PCA is used primarily as a moisturizing agent due to its ability to help retain moisture in the skin and hair. It's popular in personal care products for this reason. Scientific studies suggest that it can improve skin hydration, though the comprehensive impact on skin health is still studied.

When you see PCA on a label, it is usually featured in moisturizers, shampoos, and other products aimed at providing hydration. Its inclusion does not typically raise health concerns.

Commonly found in: moisturizers, shampoos, conditioners, skin creams, body lotions

Benefits

Helps retain moisture in skin and hair.
May improve skin hydration.

FDA

PCA is generally recognized as safe in cosmetic applications.

Research

Research points to its effectiveness in hydration but lacks long-term studies on overall health impact.

Vegan

PCA is typically not derived from animal sources and is considered vegan-friendly.

Sources: Safety Assessment of PCA as Used in Cosmetics

Scout's take

PCA is a humectant that helps to attract moisture to the skin. It is derived from amino acids and is used to improve skin hydration. It is generally considered safe for use in cosmetics.