1. Never clip nails to shorten them.
Use an emery board to file nails down to size.
2. Use nail polish remover as infrequently as possible.
Especially those containing acetone. Most nail polish removers will dry nails out.
3. Use Moisturizers
It is very important to moisturize the matrix and nail root of your nail bed with cuticle oil every day.
4. Protect your nails.
When you are no wearing polish on your nails always protect your nails with a coat of clear polish that has protein in it and don't forget your cuticle oil!