How should I wash my face, apply makeup, and protect myself from UV rays after melasma treatment?

Hello. I am writing to inquire because I am concerned about my melasma and am considering getting a procedure after a consultation at the clinic. As this is my first time receiving melasma treatment, I am curious about the procedure itself, but I would also like to know about post-treatment care in advance. I would like to know if I can wash my face and use basic skincare products as usual on the day of the treatment, and when I can start wearing makeup. I would also like to know if the clinic provides separate guidance on how much attention I should pay to sun protection when going out after the treatment. If my skin may become temporarily sensitive after the treatment, I would also like to know if I should stop using my usual exfoliating products or functional cosmetics for a certain period. Please reply regarding whether the clinic provides specific instructions on precautions or home care methods after the procedure.