Summarize this article:

Chronic split nails could be the result of an underlying medical condition like a fungus or vitamin deficiencies. If you experience chronic broken nails, let your doctor know. They can look for underlying problems and prescribe medical treatment as necessary. Going back and forth between wet and dry can make your nails extra brittle. Minimize the number of times you get your nails wet and then dry by making sure you wear waterproof foot gear on days with rain or snow. However, soaking nails for 15 minutes a day, patting them dry, then applying a moisturizer (e.g., an emollient such as organic lotion or petroleum jelly) can add moisture to the nail. Use foot cream, cuticle cream, or petroleum jelly on the area around your nails to keep them hydrated. Apply a treatment at least once a day and allow it to soak in completely to keep your nails from getting brittle and splitting. Keep your nails extra moist by keeping some foot cream by the sink and moisturizing them every time you get out of the shower. The process of applying and removing both nail cover such as polish, wraps, and decals, as well as fake nails can be harsh on your toes. Minimize how often you apply beauty products to your nails and allow them to grow naturally. naturally. Soak your nails in oil, like coconut, argan, or tea tree oil, for about 10 minutes once a week. This will add moisture and reduce brittleness. You can also take a supplement containing biotin to strengthen your nails. Avoid nail hardening agents. They may offer some benefits, but they often contain ingredients like formaldehyde that do more harm than good.
Work with your doctor. Wet your nails less frequently. Moisturize your nails on a daily basis. Wear nail polish and fake nails less often. Strengthen your nails