Hairdressers Kit Contains: 30ml Pre-Treatment Clarifying Shampoo and 100ml Keratin Treatment. Each kit contains sufficient keratin complex for approximately 1 treatment of long hair, 2 treatments of medium hair or 3 treatments of short hair. Results last up to 12 weeks when applied correctly and the correct aftercare routine is followed (i.e. the use of salt-free shampoo and conditioner). The keratin treatment will straighten, condition, de-frizz and tame unruly hair. Suitable for all hair types, including highlighted, bleached, coloured, permed, previously straightened or virgin hair. Results may vary. For best results use Keratin Kits Salt-Free Aftercare Shampoo and Conditioner.