I have completed 5 out of 6 microneedling sessions. I have seen significant results except my hyperpigmentation persists. Will tretinoin eventually fade my old acne scars? Also I have been taking Vitamin A & Zinc orally in a vitamin supplement For acne.(at first i was taking 900mcg but I just switched to a different supplement that is 4000IU, sorry not in the same units). Would I need to stop taking my supplements, too much Vitamin A? So far my acne clear bc of vitamins + topical Clindamycin.