This pure, 100% hyaluronic acid concentrate is free of any fillers or additives. Add it to your favorite creams, lotions or serums for an added hydration boost, or apply it directly onto skin, under your serums and creams. This is a cosmetic-grade hyaluronic acid, specifically for topical use in skin care. The serum is silky, and dries to a clean, satin-like finish. There are no additives in this serum, so it can be added to your favorite lotion or serum as a hydration-booster, or it can be applied alone, directly to skin, under your favorite moisturizer.