The Power of Signature Keratin
From our revolutionary keratin smoothing treatments to a wide variety of salon-professional shampoos and conditioners, each product in our reparative hair care collection is powered with proprietary Signature Keratin for strong, healthy hair.
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![Four Keratin Complex products lined up next to each other](http://keratincomplex.com/cdn/shop/files/What_is_Keratin-800x600-Consumer.jpg?v=1660934770&width=1500)
What is keratin?
Hair is made up of keratin—this protein makes up the natural structure of hair and directly affects hair nourishment and moisture. Keratin also forms a protective shield around the hair. When keratin is optimized, it leads to strong, healthy hair.