Citric Acid . May Contain ●
TL;DR. This ingredient is primarily used as a pH adjuster and buffering agent, helping formulas land in a skin-compatible pH range. It can also support preservation systems by binding trace metal ions that can destabilize a formula.
What does Citric Acid . May Contain do in a cosmetic formula?
This ingredient is primarily used as a pH adjuster and buffering agent, helping formulas land in a skin-compatible pH range. It can also support preservation systems by binding trace metal ions that can destabilize a formula.
Is Citric Acid . May Contain clean?
From a clean-beauty perspective, this ingredient is well accepted and not a common restricted-list concern. It is generally well tolerated, although higher levels or very low-pH formulas can feel stinging on sensitive skin.
Is Citric Acid . May Contain sustainable?
This material is commonly made by microbial fermentation of sugar-based feedstocks such as corn, beet, or cane. It is readily biodegradable and has low environmental persistence concerns.
Is Citric Acid . May Contain COSMOS-approved?
It is permitted under COSMOS-natural and COSMOS-organic standards when it meets the standard’s sourcing and processing requirements. It aligns well with Green Chemistry principles because it can be fermentation-derived, water soluble, biodegradable, and effective at low use levels.
How does Citric Acid . May Contain work chemically?
The molecule is a small, water-soluble tricarboxylic alpha-hydroxy organic acid with three pKa values around 3.1, 4.8, and 6.4, which explains its buffering behavior. In personal care, it is commonly used around 0.01% to 0.5% for pH adjustment, with higher levels used only when an exfoliating low-pH profile is intended.
Last updated 2026-05-14