N-acetyl cysteine and its topical use

摘要: Methods to alleviate or improve various cosmetic conditions and dermatological disorders, including changes damage skin, nail hair associated with intrinsic aging and/or extrinsic aging, as well caused by factors using compositions comprising N-acetyl-cysteine (isomeric non-isomeric forms) free acid, salt, lactone, amide ester forms of are described. The methods provided may also comprise application a composition further containing cosmetic, pharmaceutical other topical agents enhance create synergetic effects.