The Keratin Research Original Formula treatment is designed to straighten hair, remove frizz, and add shine, silkiness, and softness to your hair. The treatment application may take 2 to 3 hours depending on your skill level, hair length, and type. The treatment will last for over 3 months and in some cases as long as 9 months. With the original formula, the hair will be easier to manage and maintain, smooth, fast-drying, and easy to style. It is available in 5 formulations to match specific hair types and works well on the detailed instructions provided with the product are comprehensive and include links to an additional instructional video.