I am due to start an immunosuppressant medication that can have hair loss as a side effect. Is there anything I can do to minimise or pre empt this?

Hi, My question is about managing acne while pregnant. During my first pregnancy I had painful cystic acne around my jaw and chin. I read that certain products should be avoided e.g. retinol, salicylic acid. I am now considering a second pregnancy and wondered whether there are any topical treatment...