But there are still some strong alternative sunscreens out there that are biodegradable and possibly old-fashioned, in the sense that they rely on a physical barrier, like zinc oxide.

• 不过市面上还是有其他的其他强效的遮阳剂可作为备选。这些遮阳剂可以生物分解，从其依赖氧化锌等物理隔离的角度来看，还颇为传统。