Porous and dull hair? L'Oréal Paris presents Elvive Glycolic Gloss Extra Gloss Shampoo. This advanced formula, containing a 3% Glycolic Acid Complex and an acidic pH, combats porosity and seals the cuticle for a smooth, reflective surface. The result: a dazzling, glossy shine that’s 3X more intense* and resists fading for up to 6 washes. Elevate your haircare routine with the expertise of L'Oréal Paris. *Instrumental test, using L'Oréal Paris Elseve Glycolic Gloss Extra Gloss Shampoo vs classic shampoo.