Retinol vs. Tretinoin: Why prescription is stronger and cheaper than over the counter

  A 1% retinol serum might sound stronger than a 0.025% tretinoin cream. However, it’s quite the opposite. Retinol has an appealing pitch for people trying to treat acne. It promises many of the benefits associated with prescription retinoids while sounding considerably easier and more tolerable. It is over the counter and avoids the irritation