A sun exposure limit is a somewhat abstract notion that aims to reflect the amount of ultraviolet light the skin can withstand without too much damage (premature ageing, etc.).
It varies greatly from person to person. It depends on our skin type, our medical history and how much time we spend in the sun, among other things.
Somebody with light skin has a much lower sun exposure limit than somebody with darker skin.
Our limit is like a precious reservoir that is drained a little each time we are exposed to the sun.
You can never really know your sun exposure limit - it's not as simple as that.
But there are some warning signs that show when skin has been exposed too much.
The appearance of brown blemishes on the face and chest is a sign that you are nearing your sun exposure limit. Another sign is the appearance of white marks after sunburn. It is not the end of the world, but you should be aware of it.
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