I have been using Tretinoin for a couple of months. I apply it to a cleansed and dry skin, having been told that the skin must be dry. I also apply it just before turning the bedroom lights out, as again, I have been told that light effects this product.
However, information on a couple of sites indicates that Tretinoin can be layered with other creams/serums. Some advise putting the cream on first and the Tretinoin after, others advise putting the Tretinoin on first followed by the cream/serum.
Can you please inform me whether other products can be layered with Tretinoin, and if so, in what sequence and is there any particular way this should be done?
If products can be used, could you advise which would be the best?