A prodigious product with an ultra-light, non-greasy texture, highly concentrated in plant-based extracts, proteins, and vitamins, aiming to energise the hair bulb to help the hair to anchor, making it more resistant, whilst nourishing and refreshing the scalp.. The Science. The Revolumising & Revitalising Biotin Scalp & Hair Treatment is the first of the Avant Nutri-Replenish Range. It combines Biotin, Hyaluronic Acid, and Niacinamide.. • Biotin aims to thicken hair and stimulate growth.. • Hyaluronic Acid helps nourish and refresh the scalp and hair, helping smooth from the root to the ends.. • Niacinamide works to brighten and refresh the hair by retaining moisture.