L Oreal Paris Elvive Hyaluron Pure Oil Erasing Serum for Oily Hair Elvive Hyaluron Pure is expertly designed for oily hair to help achieve 72 hours of fresh roots and hydrated free-flowing hair. Inspired by skincare Elvive s Hyaluron Pure regimen is formulated with a dual-action combination of Salicylic and Hyaluronic Acid to purify the scalp without stripping and hydrate lengths without weighing down for up to 72H. First the Oil Erasing Pre-Shampoo Serum with a 6% Exfoliating Complex removes up to 100% residue. Then the 72H Purifying Shampoo removes oil buildup and for clean fresh roots. Finally the 72H Rehydrating Conditioner instantly detangles and moisturizes hair without weighing it down. When using Hyaluron + Pure Oil Erasing Serum and 72H Purifying shampoo as system.