Q:My nails grow quite long, but they break off. I’ve tried nail hardeners, but they don’t seem to help.

　　我的指甲很长，但很容易折断。我试过用一些指甲硬化剂，但是没用。

　　A:Nail hardeners should be used when nails are bendy and flexible, rather than when they’re brittle and prone to snapping.

　　最好是在指甲比较柔软的时候用硬化剂，如果指甲很脆弱，易折断，那最好不要用硬化剂。