This biotech-engineered weightless oil works on all hair types to strengthen, repair damage, reduce frizz at two levels of the hair fiber, and improve shine. This silicone-free oil fights frizz differently by addressing the damage that causes frizz long-term and immediately smoothing frizz plus flyaways. The K18PEPTIDE works to address deeper-level damage that causes frizzrepairing and strengthening damage at the innermost layer of hair to reverse damage that leads to frizz.