Is it safe to get Botox for migraines less than 24 hours after professionally dying hair?

I’ve been getting Botox for migraines for the last year and have found it incredibly helpful. I just realized I accidentally booked my next injection for the day after I get my hair professionally dyed (all the way up to the scalp) for the first time. Knowing that I do have sites on my scalp, should it be safe for me to keep my Botox appointment? Or is there a risk I should be aware of?