Constant contact with detergents, solvents, or dry air can leave nails brittle and splitting. Fungal organisms and low thyroid function are additional culprits, especially if fatigue, weight gain, or low mood accompany changes. Deficits in biotin, protein, or iron may also contribute. Excess hand washing and harsh cleaners accelerate damage. Wear gloves, moisturize after washing, and maintain a balanced diet. Moderate length and a gentle strengthener can lower ongoing breakage and peeling.
