Sulfur is a substance that for thousands of years has been a popular way to treat acne and other kinds of skin inflammation. As early as 5,000 years ago the ancient Egyptians made a sulfur salve to treat acne and eczema. Traditional Chinese medicine also prescribed sulfur for skincare concerns.
Retinoids are, quite simply, forms of Vitamin A. Although retinoids differ slightly in chemical composition from Vitamin A, the terms retinoid and Vitamin A are often used interchangeably. The American Academy of Dermatology recommends topical retinoids as a first-line treatment for acne and they’re a preferred treatment for maintenance once acne has cleared.