Hair keratin treatment is a smoothing and straightening process that uses a special formula to infuse the hair with keratin, a natural protein that makes up the hair structure. The treatment helps to eliminate frizz, add shine, and make hair more manageable. It works by coating the hair shaft with keratin and sealing it with heat, which smooths out the hair cuticle. This process makes hair appear straighter, shinier, and healthier. Keratin treatments typically last for a few months and are especially beneficial for those with curly, frizzy, or damaged hair.