There is a number of things that you should know about tanning especially after you use Retin-A. One of these things is that getting your skin bronzed the traditional manner or through tanning beds will reverse all the positive effects that Retin-A provides hence it is discouraged to use these methods when you are taking Retin-A.
The thing with Retin-A is that it makes your skin more sensitive to the sun's ultra-violet rays hence if you get your skin tanned and then get exposed to the sun, your skin is more likely to get damaged. The last thing that you want is to get skin cancer as well as thin, blotchy leathery dry skin. This is one of the reasons why utilizing self-tanners are far healthier than tanning in the traditional manner especially when you are using Retin-A. Sunscreens also help in keeping your skin from getting damaged by the sun's harmful rays.
On the other hand, if you feel that you really need to get tanned, maybe because you want to flaunt it in an upcoming party, then you should stop using Retin-A a week before getting yourself tanned. Reversing some of the damage that Retin-A may have caused by this conflict should be done right away. When it comes to using sunscreens, use a product that offers SPF 50 or better yet, stay at home. This holds true especially if you have skin allergies in which case you may want to consult a dermatologist.
Overall, while utilizing Retin-A provides you with some advantages it is really a bad combination with tanning. The best way to go about this is to stop one or the other. If you want to keep using Retin-A then stop tanning until you already get to enjoy the positive effects of using Retin-A.