Pro Artist Smooth Heat Protective Styling Serum - COLLAGEN BOOST SERUM 3.4OZBenefitsHelps repair and prevent damage, boosting moisture and gloss for visibly more vibrant hairHelps repair damaged, unruly hair shafts and seals split ends with Black OatProtects from heat damage with hot tools up to 455F with Natural Chia ComplexResearch ResultsSmoothes hair and helps maintain strong, resilient, healthy-looking hairImproved up to 92% of split ends instantlyUp to 78% stronger hairUp to 48-hour frizz control in extreme humidity, leaving hair softer and smootherInstantly add a vibrant, polished finish with a boost of shineGreat for all hair types*Based on breakage test using Hot Tools QuietAir Dryer at max temperature and then Flat Ironed up to 455F with the Evolve Flat iron vs untreated hairFormulated WithoutSiliconePhthalatesParabensSLS & SLES SurfactantsDEA - Pro Artist Smooth Heat Protective Styling Serum