Nail Lacquer and nail polish remover can be extremely drying to nails and cuticles alike, which an result in brittle, broken nails.  Many people don't realize that cuticles are live tissue and cutting or drying out this tissue is the same as peeling the skin off your finger tips, so this tissue must be taken care of! Try This:

SEPHORA by O.P.I. Brush On Cuticle Oil
Imbibed with 5 hydrating oils and vitamin E in an easy, brush on applicator.