Completely free of ammonia or ammonia derivatives - more comfortable to use and no damage to the hair's sensitive structure Contains NO Thioglycolates or Thioglycolates derivatives. Acid pH - works between 4.0 to 6.5 - leaves the hair at its natural pH Contains Cysteamin HCL - more gentle active ingredient Gentle neutraliser system with plant amino acids and certified organic extracts of Aloe Vera, Chamomile and Comfrey for comfort and conditioning