Top One™ Hyalugen is a premium professional hair straightening protein treatment designed for powerful smoothing and deep hair repair on all hair types — including thick, frizzy, resistant, and color-treated hair. Formulated with advanced Hyalugen Technology, this treatment combines Hydro Collagen, Shea Butter Cetyl Ester, and a nourishing blend of Argan Oil, Coconut Oil, Sunflower Oil, and Grape Seed Oil to restore hydration, rebuild hair fibers, and deliver long-lasting straight, silky results. This formaldehyde-free formula ensures safer application while maintaining professional salon-level performance.