Get Rid of Acne with A Ret Gel; Buy It Online on PharmaExpressRx Millions of people suffer from acne, while most of them do not seek any medical treatment, leaving acne untreated. Acne is treatable with a medicine called A Ret Gel ( ), a tretinoin-based medicine. It also improves the overall skin texture and tone by removing acne and acne scars. A Ret Gel is available at a much cheaper rate on PharmaExpressRx, an online pharmacy that supplies a variety of generic medications. The store has a lot to offer when it comes to discounts and free shipping.