Profhilo face and neck. Profhilo® is an injectable skin remodelling treatment containing one of the highest concentrations of Hyaluronic Acid (HA) on the market. It is, specially formulated for people whose skin lacks volume and elasticity. Rather than just plumping and filling wrinkles, the slow-releasing of HA by Profhilo® stimulates the production of collagen and elastin. This in turn improves skin tone, hydration, and the appearance of fine lines. The result is improved skin quality that lasts 6 to 9 months.