Luxe treatment for soft, smooth hair. Keratin Smooth Mask is a rich moisturizing treatment that smoothes frizz, fluff and flyaways. Like its name says, it’s infused with keratin, a fibrous protein found in your hair and a key building block. This means this mask is perfect for dry or damaged hair. Peptides dive deep beneath the surface of each strand to restore damage, while keravis strengthens and helps prevent breakage