The L’Oréal Paris Glycolic Gloss Leave In Serum is a lightweight, salon-inspired hair serum designed to deliver glossy, smooth, mirror-like shine to dull and rough hair. Powered by a glycolic acid complex, this leave-in formula works at the cuticle level to smooth and seal rough, porous strands, improving surface texture and helping hair reflect light for a polished, glass-finish look that can last for up to 72 hours with regular use.
