Dr. Sobel, the founder of DDF, was among the first to pioneer the union of cosmetic dermatology and topical skin care. He founded HDS Cosmetic Lab, a line of skin-care products that delivered excellent results without a prescription. Shortly after that, he changed its name to DDF - Doctor's Dermatologic Formula.
DDF developed its legendary mantra „ Cleanse. Protect. Treat. „ focusing on anti-aging, acne, hyperpigmentation, rosacea, sun protection, and sensitive-allergic conditions.