Ingredient dictionary

Acetyl Tributyl Citrate

A citric acid-based ester that works as a plasticizer and skin-conditioning agent, helping films stay soft and flexible. It is on the label of 12 products in our library. Checked against our library November 6, 2026.

The catch: none for most people; check the full product list if your skin reacts easily.

What Acetyl Tributyl Citrate does

Keeps film formers flexible and not brittle
Softens the feel of nail and makeup films
Adds a soft, smooth feel to formulas

Acetyl Tributyl Citrate is made by reacting citric acid, the sour compound found in citrus fruit, with butyl alcohol, then adding an acetyl group. The result is an oily liquid that blends easily into oils and film-forming ingredients.

Formulators use it mainly as a plasticizer. A plasticizer sits between the molecules of a dried film, such as nail polish, and keeps it flexible so it does not crack or peel as easily. In skincare and makeup it also adds a soft, smooth feel.

Good for

Suits nail polishes and other film-forming products that need to stay flexible rather than crack.

Be careful if

Nothing in particular for most skin types.

Frequently asked questions

Is Acetyl Tributyl Citrate safe?

Acetyl Tributyl Citrate is generally considered low risk for skin in cosmetic use, and it is used in nail and makeup products. Like any ingredient, it can irritate sensitive skin, so a patch test is wise if you react easily.

Does Acetyl Tributyl Citrate make nail polish last longer?

It helps polish stay flexible, so the film is less likely to crack or peel when nails bend. It does not harden or strengthen nails by itself, and it is not a nail treatment.