For stronger and healthier nails, soak for 3 minutes a day in a solution of 1/2 cider vinegar and 1/2 alcohol.
Also, add ONE drop of formaldehyde in a regular sized nail polish bottle (you can buy small bottle of formaldehyde from local pharmacy) will turn regular polish into "Hard as Nails" polish. It helps strengthen nails and makes them harder to split or crack.
I must stress in this ONE DROP per bottle. Less IS more. I put 5 drops in the first time I tried it and my nails felt like they were shrinking, no kidding. Luckily I had polish remover on hand. It was fine when I got it off though. Not trying to scare anyone, just don't overdo it.
Olive oil is wonderful to use as a moisturizer for your cuticles and fingernails. This is a page about using olive oil on brittle nails.
