Question 1

What does Citric Acid. May Contain/Peut Contenir : Ci 77891 do in a cosmetic formula?

Accepted Answer

This ingredient is primarily used as a pH adjuster and buffering acid, helping formulas land in the right acidity range for preservation, exfoliation, and product stability. It can also support mild chelation of metal ions in water-based systems.

Question 2

Is Citric Acid. May Contain/Peut Contenir : Ci 77891 clean?

Accepted Answer

From a clean-beauty perspective, it is well established and generally unproblematic at normal pH-adjusting levels. Sensitivity is more likely when a finished formula is very acidic or used at higher exfoliating levels, rather than from the material itself.

Question 3

Is Citric Acid. May Contain/Peut Contenir : Ci 77891 sustainable?

Accepted Answer

This material is commonly made by fermentation of sugar-based feedstocks and is readily biodegradable. Its production profile is generally favorable, with low persistence concerns in rinse-off or leave-on use.

Question 4

Is Citric Acid. May Contain/Peut Contenir : Ci 77891 COSMOS-approved?

Accepted Answer

It is permitted under COSMOS-natural and COSMOS-organic standards when produced and used according to the standard’s criteria. It fits Green Chemistry principles well because it can come from renewable fermentation feedstocks, is water soluble, and readily biodegrades.

Question 5

How does Citric Acid. May Contain/Peut Contenir : Ci 77891 work chemically?

Accepted Answer

The molecule is a small, water-soluble tricarboxylic acid with three dissociation constants around pKa 3.1, 4.8, and 6.4, which makes it useful for buffering in mildly acidic systems. Typical use is often below 1% for pH adjustment, while higher levels may appear in exfoliating products, and it is broadly stable in aqueous formulas.