Long before the beauty world discovered dermatologic skincare brands, there was DDF, the first prestige skincare company to address skincare by real concerns. Doctor's Dermatologic Formula (DDF Skincare) is legendary for its Cleanse, Protect, Treat approach to the science of beautiful skin. DDF Skin Care founders Dr. Howard Sobel, M.D., P.C., F.A.A.C.S., and Elaine Linker, Nutritional Consultant, along with a team of biochemists, lead the company in formulating breakthrough skincare formulations based on trusted medical practices. Integrated with cellular and nutritional science, DDF skin products delivers fast acting results, corrects existing damage and prevents future skin concerns. HDS Cosmetic Lab, Inc. was founded in 1991 by world-renowned dermatologist, Dr. Howard Sobel, M.D., to provide his patients with over-the-counter products that deliver professional results without a prescription. In 1993, Elaine Linker joined DDF with the goal of establishing a brand that identifies the real-life needs of women and men seeking healthy, clear and vibrant skin. Together they created the Cleanse, Protect, Treat protocol which considers the health of skin by focusing on concerns including Aging Skin Preventative, Aging Skin Restorative, Acne/Blemish, Sensitive/Allergic, Hyperpigmentation and Body/Sun.