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Originally Posted by dalnet22
This might sound like a silly question, but here goes: Does it help to apply sunscreen after I'm already burnt by the sun?
For example, I go out in the sun for a couple hours without sunscreen. I'm now burnt, so I apply sunscreen so I don't get more burnt. Does this help me at all? Am I already susceptible to cancer because I didn't put it on before I went out?
I'm aware that I should apply it before I go out and every two hours throughout the day. However, I'm interested in how affective the sunscreen is once I'm already burnt.
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Well it won't unburn you, obviously, but I believe it will still continue to perform the same function it would have before you were burnt. It blocks a lot of the uv light. This is good. Block as much as you can. There is no over-protection and no point that it loses function regarding how sunburned you already are.
I could be wrong, but this is how I understand it.