Ingredient dictionary

Caprylhydroxamic Acid

Caprylhydroxamic Acid is a gentle preservative that helps stop bacteria and yeast from growing in water-based products, and it helps skin feel soft. It is on the label of 26 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 Caprylhydroxamic Acid does

Preservative that slows microbial growth
Helps other preservatives work better
Helps skin feel soft and smooth

Caprylhydroxamic Acid is made in the lab from caprylic acid, a fatty acid found naturally in coconut oil and palm kernel oil. It is used in many creams, lotions and lip products, often as part of a preservative blend.

Formulators use it mainly to slow the growth of bacteria and yeast, which can spoil water-based products over time. It also helps other preservatives work better together. It dissolves well in glycols and blends into lotions with little feel on the skin.

Good for

Good for lotions, creams and lip products that need a mild, low-fuss preservative system.

Be careful if

Nothing in particular for most skin types.

Frequently asked questions

Is Caprylhydroxamic Acid safe for skin?

It is generally well tolerated and is used in many leave-on and rinse-off products. Like any ingredient, it can bother a person with very sensitive or reactive skin, so a patch test is a sensible step for new products.

Is Caprylhydroxamic Acid the same as caprylic acid?

No. Caprylic acid is the fatty acid it is made from. Caprylhydroxamic Acid is a separate molecule, and its main job in a formula is preservation.