For best results, apply hyaluronic acid to slightly damp skin, then lock it in with a moisturiser. Hyaluronic acid is a humectant, which means it attracts and binds water molecules. If you don’t follow with a moisturiser, it can sometimes pull water out of the skin instead of keeping it in — so sealing it is key.
Because it’s gentle, hyaluronic acid usually layers well with brightening or barrier-supporting products. And if your routine includes more drying ingredients such as retinol or glycolic acid, it can help counterbalance them by replenishing hydration in the upper layers of skin.