How Long After Chemotherapy for Breast Cancer Should I Wit Before Doing Dermaroller or Other Face Treatments for Wrinkles?

I completed chemo 6 weeks ago and just have radiotherapy to go now. I'm continuing botox with no issues, but have very crepey skin for my age, especially around the upper cheeks (44). How long should I wait before having skin treatments such as dermaroller for this? I do have a tendency to hypertrophic scarring when injured in bike accidents. However, i had a TCA peel approx 4 years ago with, if anything, atrophic scarring. Thank you.

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