Hair serum is a liquid-based treatment usually formulated using silicones that provide a protective layer to the hair cuticle, helping in smoothing frizz. This smooth layer then reflects light, which is how serum gives your hair a shiny, non- greasy look and feel. Gift your hair velvety smoothness, exceptional conditioning and long-lasting luster with Trichup Hair Serum – Nutri Shine. Infused with nutrient-rich oils of Argan, Olive and Wheatgerm, this non-greasy formula instantly adsorbs onto your hair giving stunning shine, while also helping to eliminate frizz, split ends and breakage.