Split fingernails: What causes them?

Split fingernails are often caused by repetitive or prolonged contact with water.

From MayoClinic.com

Q: What causes split fingernails? Can the splitting be prevented?

Becky / No state given

Split fingernails are typically a result of repetitive or prolonged contact with water — think dishwashing and tub baths, for example. Nail polish remover also can contribute to split fingernails. Split fingernails usually aren't a sign of vitamin, mineral or other nutritional deficiencies.

To prevent split fingernails, treat your nails gently:

• Wear cotton-lined rubber gloves when using soap and water for prolonged periods or when using harsh chemicals.
• Avoid long soaks in the tub.
• Repair fingernail splits or tears with nail glue or clear polish.
• Use nail polish remover no more than twice a month. If you polish your nails, touch up the polish in the meantime. When you do use nail polish remover, avoid those that contain acetone.
• Limit manicures.
• Rub moisturizing lotion into your fingernails after washing your hands and after removing nail polish.
• Keep your fingernails neatly trimmed. Round the tips in a gentle curve.

If the splitting doesn't improve or you're concerned about your split fingernails, ask your doctor for additional suggestions.