Chlorphenesin

Keeps the formula fresh.

What it is

An organic compound made in a lab.

A preservative that helps keep the product free from microbial growth.

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

Keeps the formula freshOfficial EU function: Preservative

Limits microbesOfficial EU function: Antimicrobial

Restricted in certain uses · Cosmetics, EU

Allowed as a preservative in EU cosmetics up to 0.3% (Annex V).

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