-A smoothing treatment for blonde/highlighted hair with cold tones & natural gray/white hair--Prevents hair from yellowing due to use of high temperature straightening irons--Contains Kera-Collagen Complex featuring Hydrolyzed Keratin Complex & quaternized Collagen--Helps re-arrange the chains of hair keratin using thermal styling---- Should be used in step 2 of the Lisse Design Service instead of "regular" Smoothing Fluid--Hair appears sleeker & more manageable with vibrant color--For professional use onlyProduct Line: AlfaParf - Lisse Design Keratin TherapyProduct Size: 500ml/16.91oz