You should taking calcium supplements(after consulting your doctor). Use a nail hardening product and go for regular manicures. Wear gloves when doing the dishes and stop unhealthy habits such as chewing on fingernails when stressed.
By the time you see your fingernails, they are not living matter. So strengthen your nails by making sure you have a healthy diet with plenty of protein and vitamins.
Buy nail polish especialy made for nail-strenghtening, or if you like a do-it at home product. Massage your nails daily with olive oil with a few drops of nettle oil.
