Tretinoin caused redness, itchiness and sandpaper feeling on my arms. What to do?

I recommend discontinuing use and seeing a cosmetic dermatologist for an evaluation and treatment. Lasers, microneedling/prp, peels and skin care can all improve texture and redness. See an expert. Best, Dr. Emer

Hi There. Everyone reacts to retinols with redness and flakiness if you start using it in too high a concentration too quickly. Stop using them, and this will resolve usually in a few days. No need for other treatments!

Tretinoin 0.1% is very high to start using on the skin daily. I usually start patients with a much lower concentration and use every 3 nights after for 2 weeks and slowly increase exposure as tolerated. Starting with a high concentration every day will produce your symptoms in most people!

I also wonder why you are using it on your arms and legs-- is this for acne or something different like keratosis pilaris? There may be better treatments for you than using Retin-A. I would recommend seeing a qualified expert who knows about skin care products.