Keratin Complex Smoothing Therapy is different. Conventional straighteners or relaxers may break the protein bonds within the hairs structure, causing each strand to reform into a permanently straight shape. Keratin Complex's revolutionary technology does not break the hair's bonds, instead delivering the versatility of smoother, healthier-looking that can styled wavy or straight as desired. Treatment can cost less or more depending on location and length of hair. Takes 2 to 4 hours.