Keratin treatments make hair more manageable, especially if it is frizzy or thick. If you often heat style your hair, you'll find that a keratin treatment makes it dry faster. Keratin, according to some, reduces drying time by more than half. However, some people say that they can't tell any difference between this treatment and others. There are several types of keratin treatments, including keratin injections, microderm abrasion, and skin smoothing facials. Each method uses a different technique to deliver the protein directly to the hair shaft for maximum results. Injections use small needles to deposit small amounts of keratin into specific areas of the scalp to promote growth of new hair. This treatment is usually done every four to six weeks until at least 50% of the hair is growing back. The more frequently you inject yourself, the better the result will be. However, this treatment is very painful and requires a doctor's visit for each injection. Microdermabrasion removes the top layer of skin to reveal younger looking skin beneath. This treatment uses fine crystals to remove dead skin cells that block hair growth. Although it may seem like a quick process, new skin grows back over time so this treatment must be repeated twice a year at least initially.