This cosmetic is vegan and for professional use in hair salons, it permanently curls even the most difficult hair. Its shaping strength is suited to hair that is more challenging to manage. The advanced VPlex Technology contains cysteines in dimer form (cystine) that facilitate the formation of disulfide bonds, providing extra strength and shine to the hair without altering its color. As a result, it revitalizes the hair fiber and repairs the damaged hair cuticle, while collagen and azulene protect the scalp. Conditions of use and warnings: Avoid contact with eyes. In case of contact with eyes, rinse immediately and thoroughly with water and consult a doctor. Use appropriate gloves. Contains thioglycolate. Follow the instructions for use. Keep out of reach of children. For professional use only. Contains ammonia. Recommended for use by a professional hairdresser.