This clinically-formulated Advanced Retinol Night Repair Treatment works overnight to support skin’s natural cellular repair process and help reduce the appearance of acne and acne scarring. Featuring highly concentrated All-Trans-Retinol Technology, this breakthrough repair treatment helps support collagen synthesis and deeply penetrates the epidermis through a unique micro-polymer delivery system to support cellular turnover. Dermstore has partnered with Flex to allow you to use your Health Savings Account (HSA) or Flexible Spending Account (FSA). This means you can now use your HSA or FSA debit card to buy Dr. Zenovia products with pre-tax dollars, resulting in net savings of 30-40%, depending on your tax bracket. Eligible for HSA/FSA with a letter of medical necessity at checkout. From dermatologist-recommended treatments to solutions for chronic skin conditions like acne, eczema, and rosacea, these products are both effective and eligible. | Dr. Zenovia Advanced Retinol Night Repair Treatment, 45 ml | Dermstore