Salt-free shampoo and conditioner are vital to the after-care of all keratin straightening processes. For the use: wet your hair and apply generously. Gently massage your hair and scalp from its roots to its ends. Rinse well. Salt-free shampoo and conditioner are vital for the aftercare of all keratin straightening processes. Use: apply in wet hair. Massage gently and leave on for 10 minutes. Rinse well. Revolutionary formaldehyde-free keratin system that strengthens your hair and achieves a perfect straightening. 3-STEP SYSTEM. Easy to use with amazing results. 100% formaldehyde free. Eliminates up to 80% frizz. High performance and quality hairstyling that lasts up to 10 weeks. Revolutionary single use system, ideal for all hair types and colored hair. Can be washed and brushed the same day. Read the instructions before use.