Activity for Kevin Simperâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Why does sunscreen not work all day? All over the internet it says that sunscreen does not work all day, but does not say anything about why. Why does sunscreen not work all day? Does the matrials get destroyed by the UV rays? Or is it because they evaporate? A product called p20 claims 10 hours but does not provide any evidence, whi... (more) |
— | over 10 years ago |