L'Oreal Paris- Revitalift Hyaluronic Acid Serum 15mlThe L'Oral Paris Revitalift Hyaluronic Acid (HA) 1. 5% hyaluron serum: Our highest concentration* of Hyaluronic Acid serum. Immediately after just one use, the Hyaluronic Acid (HA) serum instantly plumps up skin (90%*), deeply hydrates (98%+ ), and boosts radiance (98%+ ) Hyaluronic Acid (HA) is a major component driving skin plumpness and hydration. It starts to deplete as early as 20 years old loss of plumpness, fine lines and rough texture starts