Hair, skin and nails are naturally made up of the protective protein called keratin. It can also be found in some of your internal organs. In formaldehyde free keratin treatments, the keratin used to infuse the hair can be extracted from feathers, horns and certain animal wool. Keratin is used to build the hair by locating the porous areas inside the hair cuticle and injecting those areas with this essential protein. While other treatments use formaldehyde (a harsh, toxic chemical) to semi-permanently straighten the hair, these formulas prove to be dangerous to the health of the client and the stylist as well as harmful to the hair. With treatments containing formaldehyde you may end up requiring to continually receive the treatment as a means to hide the damage that it has caused to your natural texture. With the 100% formaldehyde free formula used at Alter Ego Salon your natural hair remains in tact. The GK Hair Smooting Treatment strengthens the hair and seals the cuticle which helps maintain health and length and adds shine. The GK System is customizable to each client's desires and has the ability to help elongate and define curls but also helps result in an even silkier silk press. For all hair types it can be resistant against frizziness, all without any damage. (Be aware it is still necessary to avoid direct humidity and moisture as it is resistant to but not humidity-proof.) The treatment lasts on the hair up to 3 months with proper care, after which your hair returns to its original natural state and is ready for your next application.