Retin A Gel Cream + Hair Loss?

Hello, I would like to know if Retin A (cream or gel applied on the face area and not the scalp) could cause hair loss, on short or long terms. Also, i did read that the product is supposed to thicken the skin, but I've been using it for a month and i notice more spider veins than pre treatment. Could this be temporary? Thank you so much. C

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