What strength and how often can I use Retin-A on my hands?

Thank you for your question, this would require an in person evaluation so that the correct strength is recommended for your skin in particular. I hope this was helpful. Best, Dr. Emer. 

Thank you for your question.A common side effect of Retin-A is irritation, peeling, redness, etc., so in general, I recommend starting with the lowest dose. If no irritation occurs, then the dose may be increased. Retin-A should be applied at night since another side effect is photosensitivity, which means the skin can burn easily. I highly recommend you consult with a board certified dermatologist to have your skin evaluated and to discuss treatment options that best suit you needs. Take care and good luck.