It uses a very low percentage of Thiol (less than 1%) to allow the Keratin and conditioners to enter the hair shaft, strengthening and altering the shape of the curl, this Thiol has a slight smell which quickly disappears, as the product air - neutralizes, creating no damage or burning. With satin smooth slip, FLEXXER can be used to detangle, and either left to dry or made more effective by using heat to elongate the curl or create a style   FLEXXER will leave the hair soft with a looser curl that will not matt or tangle after the next wash.
REMEMBER - When using a hairdryer or flat iron protect the hair with VIXXEN Heat Protector