Keratin is a type of protective protein our bodies produce naturally that appears in our hair, skin and nails, explains Madison Roulan, hairstylist and co–owner of Rule On Salon in New York City.

The treatment involves applying a keratin-rich formula to your hair, followed by heat sealing with a flat iron to lock in the protein. This process smooths the hair cuticle, reducing curl and frizz.

Many women have been singing the praises of keratin treatments (also known by the name brand of Brazilian Blowout) for years, adoring the glossy, frizz-free results.

Because ‘keratin treatment’ has basically become a bit of an umbrella term for a lot of hair smoothing, in-salon treatments available. So before booking in, you’ll want to figure out which ...

Firstly, my hair is washed thoroughly and blow-dried. Then the keratin solution is applied and sealed into the cuticles with special irons. My hair produces an alarming amount of scary-looking steam.

Fast-forward 12 months later and I am singing a very different tune. I got my last keratin treatment this past August and weeks later I noticed that my hair was literally disintegrating before my ...

The global recombinant human hair keratin protein market is growing quickly as more people seek effective hair health solutions and advanced wound healing treatments, says a study published by ...

The ongoing controversy over the celebrity-endorsed Brazilian Blowout and similar keratin hair smoothing treatments that are used to tame frizzy hair intensified this week, when U.S. health ...