Ingredient
Citric Acid
Most often used in small amounts to bring a formula to its intended acidity rather than as an exfoliant.
- CAS 77-92-9
What it is there to do
pH adjuster
Brings the formula to its intended acidity.
Chelating agent
Binds trace metals that would otherwise spoil the formula.
What we don't know
- Where it comes from — plant, mineral, synthetic — isn't recorded.
- No published rule in our reference names it. That is about the rules, not safety.
- How much of it is used in any particular product. We hold no concentrations at all.
This is information about an ingredient, not medical advice, and not a judgement about any product that contains it. Back to the reference.