SkinMedica’s innovative, proprietary fusion of key ingredients interacts positively within the skin to help noticeably improve skin's appearance and firmness. All of SkinMedica's products are developed by a dermatologist to work together to enhance the beauty of your skin. SkinMedica products are designed to be sold exclusively by doctors. SkinMedica cannot guarantee any product that is not purchased through an authorized SkinMedica Reseller. Their line includes the famous TNS complex.