@anon603: Retin-A works to unclog pores and causes your skin to shed skin cells. Retin-A is great for those fine wrinkles but it is not effective for deep wrinkles. It is also great to treat acne.
Alpha Hydroxy helps the skin to produce its collagen. That makes the skin thicker. AHA comes from things like sugar cane and fruit which are considered a natural skin treatment. You would want to start with a product in which the acid level is no more than 10%.
Comparing the two, many have used retin-A, and reported that it irritated their skin. Alpha hydroxyl is less irritating and it doesn’t dry the skin out. Alpha hydroxy lotion is what I use.
I don’t think it would be a good idea to use the two together.