Hello,
Retinol is different from retoinoin and is less potent than this. It causes less side effects but has to be used with caution especially when moving in the sun. Then it hs long term side effects and can cause damage to the skin.
I hope it helps. Take care and regards.
Not normally. The skin is magnificent at regenerating itself and as long as there are no deep burns or scarring, it should repair itself with time.