Bioliss bio keratin hair straightening is an advanced treatment that combines the power of keratin with natural ingredients for long-lasting smoothness and shine. Free from irritating fumes, it is safe for both stylist and client. Suitable for all hair types – fine, frizzy, dry or damaged – Bioliss delivers silky, manageable hair that is repaired from the inside. A modern solution that merges keratin straightening efficiency with natural care.