While it’s true that vitamin A is a fat-soluble vitamin, and it can be stored up in the body, this is not the case when it’s used topically. In creams and lotions, vitamin A derivatives stay in the skin and don’t enter the bloodstream. So, they are not like ingesting vitamin A supplements, which you can have too much of. Now, it is important to be warned that vitamin A derivatives, like retinol and its esters, can make you sensitive to UV light. UV light exposure leads to free radical damage, which can - eventually - lead to skin cancers. For that reason, vitamin A skin products should only be used at night. They should also be followed by the use of an SPF 30 or higher during the day. On the flip side, when used appropriately, vitamin A can help to remove precancerous, sun-damaged cells from your body. That’s a plus! Please see more on our website.