Dermatologists Reveal the Number 1 Routine for Longer, Stronger Nails

Nails need time and care

Nails are made of protective keratin and are part of the skin, says Tyler Hollmig, M.D., of the University of Texas Dell Medical Center. Their condition can offer clues about overall health, while weak, brittle nails are common even without a serious problem.

Dr. Hollmig says a fingernail typically takes about six months to regrow, while a big toenail takes about a year. Breakage can make the process feel even longer, so protecting nails as they grow matters.

Reduce breakage and picking

Leaving nails alone can help, though avoiding biting may take effort. Identifying situations that trigger the habit and applying hand cream or cuticle balm can reduce dry areas that invite picking.

Protect nails from harsh products

Cleaning products, solvents, harsh soaps and rough work can strip natural oils and harm nail keratin, Dr. Bailey says. Wearing gloves during such tasks can help limit exposure; damage may begin with fraying edges and progress to splitting layers.

Dr. Bailey recommends regularly using oils to retain moisture and protect the cuticle seal. Jojoba oil, avocado oil and shea butter are among her preferred options.

Choose products with care

Peeling or cracking nails can sometimes signal an allergy to a nail product, Dr. Adigun says. She identifies tosylamide and formaldehyde resin as common causes, and recommends 5-free polishes that omit five chemicals and allergens associated with nail growth and strength: formaldehyde, dibutyl phthalate, toluene, camphor and formaldehyde resin.

Vitamins and supplements may support nail growth, but Dr. Bailey says they should complement, not replace, a healthy diet. She suggests asking a specialist at a high-quality natural food store about a nail formula; supplements are not medicines, and extra caution is advised during pregnancy or nursing and for children.