Brittle, peeling nails??

When I was little I had always struggled with my nail biting problem. When I was about 11 I finally broke the habit! But now my nails seem more unhealthy then ever. I'll paint my nails and spend a lot of time on them, but then few hours later my nails start peeling super bad again and I'm left with barley any color. Sometimes the top layer peels back all the way to the middle of the nail... it's gross. I've tried almost everything. I've tried putting a clear bottom coat and top coat on, I've tried hard as nails, I've buffed my nails, I have bought almost every cream there is, and I have recently bought a non-acetone nail polish remover but nothing seems to work. It's getting really annoying... what's the problem?Brittle, peeling nails??
You may have a vitamin A, C, or calcium deficiency. Consult your doctor before taking vitamin A though; taking too much of it can damage your liver.

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