Jean De Perle Paris Cosmetics has developed an all natural keratin hair treatment called Argil Therapy. Argil Therapy is an amino acid hair straightening treatment which uses amino acids and white clay to straighten hair naturally without the need of chemicals such as formaldehyde, sodium hydroxide, thio, or lye. Argil Therapy implements important nutrients into the hair such as keratin, l-cysteine, and silicones which eliminates between 90% to 100% of frizz and curl, making the hair soft, shiny, manageable, and most of all, healthy!