What to expect, how to mitigate effects of anti-estrogen medication?

I will be starting anti-estrogen medication for treatment of breast cancer. Five years of treatment is the goal. The likely medication will either be Tamoxifen which blocks estrogen or Anastozole which stops estrogen production. Since estrogen plays a role in skin health, what changes in my skin could occur? What can I do, if anything, to mitigate these changes?

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