3-Methylbutanoic acid

1% line markerAI-analyzed

INCI: ISOVALERIC ACID

Fragrance ingredientMasking agent

What it does

A short-chain fatty acid with a strong, pungent odor, sometimes used as a fragrance ingredient or masking agent in cosmetic formulations.

May aggravate

sensitivityrednessrosaceaeczema

Safety summary

Generally safe in low concentrations; can be irritating in higher amounts.

CAS Number

503-74-2

1% line marker

This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.

For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.