Drink lots of water. Keep your body hydrated everyday to maintain healthy nails.
Fortify your diet with FDA approved vitamins or supplements. Your fingernails count on you to be responsible with your health and your diet. Unless instructed otherwise by your physician, increase your daily doses of Vitamin A, Vitamin C, calcium, folic acid, protein, Vitamin B12, and zinc.
Touch up your manicure on a daily basis to prevent chips and cracks.
Your nails depend on you to maintain a healthy diet. Take in lots.