1. Use nail hardeners sparingly -- or not at all.
"The take-home message here is that a lot of them do more damage than good," says Stern. She reminds us that these products are not studied clinically, so most claims are not backed up by science. Unless nails are exceptionally weak and fragile, she says, most people don't benefit from a nail hardener.
Healthy nails are flexible nails, she says, so to keep yours from breaking, avoid anything that makes them more brittle.
2. Moisturize the nail bed and the cuticle.
While there is little in the way of medical data showing that moisturizing the nail bed will help nails grow, it can make cuticles look better and help PROTECT nails from breaking due to a lack of moisture. "If your nails are prone to breakage, it could mean they need moisture -- and putting oil around the cuticle helps moisturize the entire nail, which will reduce the incidence of chipping, cracking, and splitting," says Margaret Ravits, MD, a dermatologist at Hackensack University Medical Center in New Jersey.
3. Take biotin supplements.
In several studies, researchers found that supplements of biotin (a member of the vitamin B family) increased nail thickness and prevented splitting and breaking. In a respected German study that evaluated 45 people with severe nail problems, 2.5 milligrams of biotin daily for several months benefited everyone -- with 91% of the 45 citing significant improvement. NYU dermatologist Sumayah Jamal, MD, says to get the effect, it's vital that you take the prescription strength, therapeutic level of 2.5 milligrams daily.
Some nail products also contain silicon and the supplement MSM, two other nutrients associated with nail health.
4. Avoid rough emery boards.
Those old-fashioned orange emery boards are too harsh for nails, causing small fissures and cracks that lead to breakage and tears, says Ravits. Instead, she says, file nails with a smooth, fine file and don't saw back and forth. Instead, Ravits says, file in one direction only, and do it slowly and evenly to reduce risk of breakage.
While there is little in the way of medical data showing that moisturizing the nail bed will help nails grow, it can make cuticles look better and help PROTECT nails from breaking due to a lack of moisture. "If your nails are prone to breakage, it could mean they need moisture -- and putting oil around the cuticle helps moisturize the entire nail, which will reduce the incidence of chipping, cracking, and splitting," says Margaret Ravits, MD, a dermatologist at Hackensack University Medical Center in New Jersey.
3. Take biotin supplements.
In several studies, researchers found that supplements of biotin (a member of the vitamin B family) increased nail thickness and prevented splitting and breaking. In a respected German study that evaluated 45 people with severe nail problems, 2.5 milligrams of biotin daily for several months benefited everyone -- with 91% of the 45 citing significant improvement. NYU dermatologist Sumayah Jamal, MD, says to get the effect, it's vital that you take the prescription strength, therapeutic level of 2.5 milligrams daily.
Some nail products also contain silicon and the supplement MSM, two other nutrients associated with nail health.
4. Avoid rough emery boards.
Those old-fashioned orange emery boards are too harsh for nails, causing small fissures and cracks that lead to breakage and tears, says Ravits. Instead, she says, file nails with a smooth, fine file and don't saw back and forth. Instead, Ravits says, file in one direction only, and do it slowly and evenly to reduce risk of breakage.
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