Am I allergic to minoxidil?
https://healthell.blogspot.com/2022/01/am-i-allergic-to-minoxidil.html
Looks like you are allergic to the topical minoxidil. If you are using the foam, switch to the liquid or visa versa. IF you still see the redness, then the allergy is to the minoxidil, not uncommon.
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