Martiderm Shot Hyaluronic Firm, Moisturising & Firming Serum is a gel concentrate that combines five types of hyaluronic acid with Proteum 89+, an exclusive proteoglycan from MartiDerm. The different molecular weights of hyaluronic acid work together to provide intense, long-lasting hydration while helping to firm the skin and reduce the appearance of wrinkles for a redensifying effect. This light, fresh, and fast-absorbing hyaluronic acid serum promotes skin moisture retention and improves skin texture. The Proteum 89+ complex boosts the production of endogenous proteoglycans, enhancing hydration over time and helping to protect the skin from the aging effects of UV radiation.