You will enjoy brazilian keratin treatment for short hair or medium length hair or long hair k fusion is packed full of amino acids proteins and uv protection the treatment is 100 formaldehyde and urea free k fusion works by softening and bending the bonds in the hair it seals in the cuticle to leave the hair smooth and shiny for up to four months k fusion is not a straightening process it de frizzes and smoothes hair it slowly seeps away from the hair over time allowing it t