Episode 339 - How Long Does Sunscreen Really Last and Why Does it Degrade?
The Beauty Brains
00:00
The Effects of Sunscreen on the Skin
Most bottles of sunscreen say to reapply after two hours. So you put sunscreen on and if you stayed in a dark room In your house, the sunscreen would just sort of sit on your skin maybe get into your epidermis But it's just gonna hang out right If it's not exposed to any Uh uv radiation, then nothing happens. So it doesn't break down. The one caveat there though is that when you put it on you create a film on the surface of your skin And the longer that you have that film on the more you're like moving around and it's getting exposed. You could start to get little cracks in that film that's on your skin.
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