There is no current safe daily limit for how much biotin you can take. You should still avoid taking large doses unless you’re under the supervision of a doctor. You can also take a collagen supplement to help strengthen your nails. [2] X Expert Source Mia RubieNail Artist Expert Interview. 23 April 2020.
Barley Corn Egg yolks Milk Soy Avocado Broccoli Cheese Fish, chicken, or pork
Wear rubber gloves when you’re washing the dishes or cleaning.
Protect your hands when it’s cold outside to keep your nails from getting brittle and give them the chance to grow long. Get plenty of sun, even in the winter, since the sun helps your body create the vitamin D your nails need to grow faster.
Avoid shaping your nails into points, which makes them more likely to break.
Try a rich moisturizer specifically formulated for hands, nails, and cuticles. You can also get a cuticle oil to moisturize your cuticles and the nail bed. [11] X Research source Keep your nails healthy by using cuticle oil to moisturize your cuticles. [12] X Expert Source Mia RubieNail Artist Expert Interview. 23 April 2020.
Clipping broken nails with nail scissors instead of biting them off. Applying a bitter-tasting nail polish to your nails. Replacing nail-biting with a good habit such as playing with a stress ball. Avoiding things that trigger you to bite your nails such as boredom or stress.
If you wear gel polish, make sure to remove it by soaking your nails in acetone. Don’t pick at your nails, as you can damage the surface of your nails. [15] X Expert Source Mia RubieNail Artist Expert Interview. 23 April 2020.
