Ok, so I know this a common thing with some women, but it drives me Crazy!  This mainly only happens on my thumb nails for some unknown reason.  I've tried EVERYTHING!  I haven't had any acrylics in 2 years, so I know that isn't the problem.  Plus my nails grow fast (thanks to prenatal vitamins, seriously try them if you don't believe me!), so it isn't like my nails are super damaged.  I hope someone has a suggestion.  Thanks guys!