My doctors, nurses, and office staff always compliment me on my colored hair regardless of if it's before surgery, after surgery, before chemo, after chemo, etc. I always color my hair during the week before surgery, if I currently have hair and it's not an emergency surgery, because I know I won't be able to physically tolerate bending over the sink to rinse out the hair color for at least a month or two after any surgery. Surgeons just want you to have a clean body and clean hair without perfumes, deodorant, hair product, etc. when you are having surgery.

Unless your scalp has open wounds, irritated areas, or maybe if you're having brain surgery it shouldn't really matter and that goes for anyone coloring their hair, not just cancer patients. Every hair color I've ever used has a warning not to use on broken or sensitive skin in their instructions. I did learn the first time I had chemo and my hair started to grow back that you don't want to bleach your new hair growth because the high ammonia content fries the baby fine hair that grows back during the first months when you are post chemo. Most non-bleach hair colors don't have as much or any ammonia to dry out your scalp or fry your hair. I use a good shampoo and a moisturizing conditioner and my new hair growth has retained that silky smooth baby hair texture.

I gett my hair professionally done and it's next Monday not sure if the dr office is opened today or not

I would think it's ok to dye your hair prior to surgery but speak to your doctor. If he says you can, choose a dye with as little ammonia in it as you can. Please don't dye your hair during treatment and wait 6 to 8 months after all chemo and radiation are completed. You are beautiful just the way you are so why even take a chance? Happy Holidays.
Wishing you well. Endless hugs and much love.

I dyed my hair a week before surgery (I’ve had many). My surgeon never told me I couldn’t. Just a clean scalp with no hairspray or gels. I’m not going to bother before I start chemo though…..