I've tried a few top coats, and they all have their pros and cons, but I always go back to Seche Vite.  It dries super fast and gives a gorgeous shine to your mani.

Best handcream ever - unfortunately I'm pretty sure this is only available in New Zealand!  This stuff is no frills - it's unscented and the packaging is never going to win any awards - but it moisturises like nothing else and even though it feels greasy when first applied it quickly absorbs leaving my skin feeling so soft.  My cuticles and nails are at their healthiest when I use this stuff regularly, and my skin looks smoother.

I have very very dry lips, and I'm constantly licking them which makes it worse (real Catch 22) so I need lip products which are really moisturising.  Fat Balm is fabulous, lovely emollient feel on my lips and a lovely wash of pink with a faint shimmer, great for a subtle look on its own, or over the top of lippy.  It stays on well too, which many lip products don't on me.