13 Best Keratin Shampoo Brands

“Keratin helps to rebuild the protein structure of your damaged hair,” says Hawkins. “Over time, it should leave your hair silky and smooth.” It’s something our body creates naturally. “Our hair, skin, and nails are made up of keratin,” says Lam. “The more do to our hair–such as coloring or heat styling it—the more it can weaken and appear dull.”

“If you’ve got frizzy locks and are afraid to take the leap and get a full-on keratin treatment at the salon, then a keratin shampoo is a great way to start,” says Hawkins. If you already have a keratin treatment, “Keratin shampoos help protect your investment by prolonging the smoothness of the cuticle,” says Perteet.

Even if you have un-treated hair, keratin shampoos can still help keep frizz at bay. “If you have frizzy/coarse hair texture, keratin shampoo is a great option to help smooth your hair,” says Rasmussen. “Over time it creates a coating on the hair that will help fill in the pores in your hair to make it smooth and shiny.”

Tatjana Freund is ELLE’s Beauty Commerce Writer. She has interviewed countless haircare professionals, and is always testing out new and trending hair treatments.