Hi, Hope everyone is doing well. 
I needed help with my skincare routine. I’ve found these products that I think will help me see a difference in my skin and wanted to know how to corporate it in my routine. If there are any alternatives that’ll work better please let me know. For example, what products to use in the morning and night and which products I can mix and how often I should be using them. I have very dry and sensitive acne-prone skin. Thank you in advance. 
These are the products:

Need help with skincare routine

Hi,
I bought the Paulas choice Azelaic acid for my acne. But, I’m not sure when’s the best time to use it, at night or morning or both.
Also, do I put it all over my face or just the spots. 
Plus, what stage of my skincare routine shall I use it. 

Thank you in advance

Using Azelaic Acid

What’s the best retinol or exfoliator to use for really sensitive and dry skin to get rid of face acne?

Reduce Acne

It caused a very bad allergic reaction to my face and hands. Literally, burnt my face and caused irritation on my face and hands. After a week, my skin resulted in being extremely dry and flaky. It’s been just under 2 weeks and the reaction is still there especially on my hands.

F01