Alfaparf Milano Semi di Lino Density Thickening Lot I on is a professional thickening treatment for fine and mature hair, with a full-bodied and nourishing effect, which offers heat protection up to 230°C, giving body and thickness to the hair. Properties: Filler Complex: Replenishes and adds volume to fine hair that has lost its body. naturale Climate-proof: Protective barrier that keeps hair hydrated, even in case of temperature and humidity changes. Urban Defence Pro Anti-pollution shield for una Total protection. Shine Fix Complex: 24-hour shine from root to tip. Color Fix Complex: UV filter and antioxidant ingredients to prolong color hold.