Which is worse UVA or UVB rays?

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Tags

1. #unprotected
2. #usually
3. #plays
4. #immune
5. #aging
6. #exposure
7. #wrinkling
8. #premature
9. #thickest
10. #development
11. #penetrate
12. #layers
13. #superficial
14. #dermis
15. #cancer
16. #layer
17. #photoaging
18. #suppression
19. #system