Brazilian Keratin Smoothing Therapy Hair Treatment Oil is a luxurious and lightweight leave-in formula infused with precious Keratin. Keratin is the main constituent of hair. When the keratin bonds get damaged or deteriorated, the hair appears dull, dry and damaged. A keratin replenishing treatment is needed to help repair damaged areas of the hair's surface. Brazilian Keratin Smoothing Therapy Hair Treatment Oil with added keratin has the ability to: Smooth and repair Control Frizz Add shine and softness Brazilian Keratin Smoothing Therapy Hair Treatment Oil helps repaire damaged hair's surface, lock in moisture & shien and control frizz. Absorbs instantly leaving no oily residue. Suitable for dry, frizzy hair and is parabens free. For best results, use in conjunction with our Brazilian Keratin products.