Keratin treatments are a method of temporarily straightening hair by applying a liquid keratin and aldehyde solution and sealing it with a flat iron.
Although there are several types of keratin treatments on the market (Brazilian Keratin Treatment, Brazilian Blowout, etc.) most hair stylists and keratin experts agree on several basic post-keratin treatment haircare methods.
Keratin treatments are not permanent, and last anywhere from eight weeks to four months. Using products that do not contain sulfates and sodium chloride will help the results last longer.
Sodium chloride and sulfates both strip the hair cuticle faster, shortening the time your hair will stay straight. Sulfates create bubbles and foam, which open the cuticle and strip both keratin and moisture from the hair. Sodium chloride (salt) will also strip hair of moisture and of the keratin that was applied.
Keratin Treatment and Hair Coloring
You should allow 2-3 weeks before or after your keratin treatment before coloring your hair. Keratin coats your hair like a thin layer of film, which prevents colorants from penetrating your hair the way they normally would. For best results, always do the coloring before your keratin treatment.