Keratin hair treatments are a semi-permanent, hair-smoothing, curl-softening professional chemical treatment. In a keratin treatment, cream containing formaldehyde or another chemical that releases formaldehyde is brushed into the hair, which is then blown dry and flat-ironed. It is also known as Brazilian hair treatments.
keratin is artificially added to the hair to make it look smooth, shiny and frizz free, thereby making it very popular among women and men. Such treatments fill in the porous spots in your hair which materialized due to loss of keratin. This treatment results in silky smooth hair which gradually fades out after a few months.