Cetrimonium Bromide

Keeps the formula fresh.

What it is

A lab-made quaternary ammonium salt, a type of ingredient that carries a positive charge.

A preservative that helps keep the product free from microbial growth, also used to reduce static in hair.

A short summary from the dictionary, not yet an in-depth article. About these entries

Keeps the formula freshOfficial EU function: Preservative

Helps oil and water mixOfficial EU function: Surfactant - emulsifying

Limits microbesOfficial EU function: Antimicrobial

Reduces staticOfficial EU function: Antistatic

Restricted in certain uses · Cosmetics, EU

Allowed as a preservative in EU cosmetics up to 0.1% (Annex V).

A label gives no amounts, so none of this says a product is unsafe.