I use Retin-A on most nights as it is much more effective than retinol. If you have health insurance, you can switch to Retin-A. You do not need a dermatologist even: a primary care physician can prescribe it. Although... my prescription initially dates back to when I had acne as a side effect of Lithium and needed Retin- A to manage it. I do not know whether one can obtain a prescription solely for counteractibg sun damage, but I definitely think it is worth trying.