PEG-25 PABA

PEG-25 PABA (CAS 116242-27-4) is a PEG-esterified derivative of para-aminobenzoic acid used as a water-soluble UV filter in personal care and pharmaceutical formulations. It absorbs UVB radiation, protecting both the end user and the formulation itself from photodegradation.

In sunscreen and daily SPF products, it provides UVB protection within water-based systems where conventional oil-soluble UV filters are unsuitable. Formulators incorporate it into lotions, gels, and sprays to achieve broad water compatibility.

This ingredient allows for high UV absorbance performance without the greasy feel often associated with oil-based alternatives. In hair care products such as leave-on conditioners and styling formulations, it helps shield hair fiber from UV-induced color fading.

It also prevents protein degradation caused by sun exposure, maintaining the structural integrity of the hair. Pharmaceutical topical preparations also use it where photostability of the active ingredient is a critical formulation requirement.

PEG-25 PABA is typically supplied as a liquid or viscous solution for easy handling. It is available in cosmetic-grade specification, aligned with requirements for use in leave-on and rinse-off personal care products.

Buyers should confirm concentration, water content, and compliance with regional UV filter approval lists before sourcing. This includes checking Annex VI of the EU Cosmetics Regulation to ensure full regulatory compliance for the intended market.