If you have a question for one of our experts, please click here. This is known as one of the 'tretinoin creams'. A tretinoin cream, which is a prescription product, is a type of vitamin A acid. It has an ability to reverse sun damage by lightening brown sunspots and smoothing out fine lines by encouraging collagen production. It does however make the skin more susceptible to burning in the sun. You can find more information about tretinoin creams here. Dr. Richard Thomas