Butylparaben
Butylparaben (INCI: Butylparaben) is a butyl ester of 4-hydroxybenzoic acid with CAS number 94-26-8. It is classified under CosIng functions as a masking and preservative agent. It is subject to cosmetic restrictions (V/12) and has been reviewed in SCCS Opinion 1514/13 regarding propyl- and butylparaben safety.
Butylparaben functions primarily as a preservative in cosmetic formulations, helping to prevent microbial growth and extend product shelf life. Its established role is antimicrobial preservation; no additional skin-benefit claims are supported by the source.
Subject to cosmetic use restrictions (V/12) as noted in CosIng. The SCCS issued a specific scientific opinion (1514/13) on propyl- and butylparaben, indicating regulatory scrutiny around safety. Users with paraben sensitivities should exercise caution.
