- Enriched with plant-derived keratin and cocoa butter. - Controls frizz in hair. - Provides heat protection up to 230 C*. - Does not leave an oily feeling *Instrumental Test Elseve Dream Long Perfectly Straight Smoothing Serum, containing 1-2 pumps of keratin: - Apply to wet hair before straightening and drying for a smoothing effect and protection against heat - - Apply to dry hair as a final touch against frizz and frizz. .