Self tanning and tretinoin?

HiThanks for your question.Due to the nature of Tretinoin and the products associated I would not recommended using a self tanner alongside. Firstly you may finds the products effect the result and colour you may achieve sometimes making it near impossible to hold onto the colour. Secondly whilst you are using cosmeceutical products to achieve desired results within your skin it seems that applying self tan will only add chemicals onto your skin and therefore not be of benefit to your routine in any way. That being said there is no evidence to support that using these product's together would cause any harm just air on the side of caution and refrain from using the Tretinoin at the same time.  I understand the need to be a few shades darker. Have you looked into Mineral Makeup? this may be your answer.