The Ultimate Guide to Formaldehyde-Free Keratin Treatment

Hairstylist applying formaldehyde-free keratin treatment to a woman's frizzy hair in a natural, plant-filled salon.

What Is a Keratin Treatment? Keratin treatments are a popular salon solution for taming frizz, adding shine, and making hair easier to manage. Originally formulated with strong chemical agents, these treatments work by infusing the hair shaft with keratin—a protein naturally found in hair—and sealing it with heat. How Traditional Keratin Treatments Work Traditional keratin […]