Cancer substance was not used in production. Wash at 30 degrees without waiting and forcing. The product does make you sweat. It is compatible with your skin. It is 100% Healthy and Original. Post navigation Candy Color Girls Hairpins Bow Knot Hair Barrettes Children Hair Accessories Cute Girls Women Hairgrip Bow Modeling Hair Clips Satin men Stretchy Cap Hip Hop Du Doo Rag Durag Wigs Turban Bandana Headwear Solid Color long Hat Tie Down tail Hair Accessories