Remove nail polish and residue with a gentle acetone-free remover
Wash hands and nails with mild soap and warm water
Scrub nails lightly with a soft nail brush
Soak nails in a paste of baking soda and water for a few minutes
Rub nails gently with a lemon juice and water mixture
Use a whitening toothpaste on nails and rinse well
Buff nails lightly with a fine nail buffer
Apply a whitening nail treatment if needed
Keep nails dry and clean
Wear gloves when using stain-causing products
Avoid dark nail polish without a base coat
Moisturize nails and cuticles regularly
Trim and file nails to remove stained edges
Seek medical advice if discoloration persists