Glycolic-acid leave-in serum for glossy, frizz-free hair.
Rub two drops between the palms of your hands. Apply evenly through the lengths and ends of wet or dry hair.
Daily
The fourth and final step of the at-home glossing routine. This leave-in serum is infused with glycolic acid, which penetrates the hair fibre to improve shine, smoothness and strength, while conditioning agents seal the cuticle with a lasting shine glaze.
L'Oréal Paris's core haircare umbrella
An at-home glycolic-acid hair-gloss lamination treatment