Moisturize your hands and nails regularly.
A nutrient-rich oil or moisturizer will do, you can even use a dab of lip balm.
Wear gloves whenever you’re cleaning with harsh chemicals, gardening, or doing anything that involves soaking or dirtying your hands.
Load up on protein-rich food.
Your fingernails are made of a protein called keratin. Adding vitamins and supplements like biotin, Vitamin E, and fish oil to your daily regimen and don’t forget protein-rich foods like beans, fish, and nuts.