The KERAGOLD PRO Expert Liss Serum is specifically formulated to tame dry and rebellious hair, offering advanced care through a blend of Keratin and Silk Proteins. This specialized serum works to smooth the hair fiber, providing intense nourishment and achieving a sleek, manageable finish. It is an essential treatment step for restoring vitality to hair lacking definition, helping to control frizz and enhance overall hair health and shine.