Cosmetic Straightening Agent Softens hair with treatment ingredients. Soft type. Thioglycolic acid & cysteine based first agent. High penetration due to liquid crystal emulsification, allowing for easy application and good manageability. Thank you for viewing. - Although new and unused, there may be scratches or stains on the container due to long-term storage. Please refrain from purchasing if you are concerned. - Please refrain from price negotiations. - We are unable to respond to comments.