Final answer:
Nails are primarily composed of keratin, which makes them tough yet flexible. To prevent nails from splitting, use nail hardeners or strengtheners, moisturizing oils, and avoid toxic chemicals. Good nutrition also contributes to nail health.
Step-by-step explanation:
To prevent nails from splitting, it is important to understand their composition and how they grow. Fingernails and toenails are primarily made up of a protein known as keratin. This protein makes nails tough and hard while still allowing them to be flexible.
However, when nails lack moisture or are exposed to harsh chemicals, they can become brittle and prone to splitting. To maintain healthy nails that are less likely to split, it's beneficial to use products that hydrate and protect them.
A common item that helps to prevent nails from splitting is a nail hardener or strengthener. These products often contain ingredients such as vitamins, peptides, and various proteins that work to reinforce the nail plate.
Additionally, regularly applying a moisturizing nail and cuticle oil can help to keep nails flexible and less likely to crack or split. It's also important to avoid products containing toxic chemicals like dibutyl phthalate (DBP), toluene, and formaldehyde, which can weaken nails over time.
Including appropriate nutrition in one's diet, such as foods rich in biotin and other vitamins, also plays a crucial role in nail health. By combining the use of strengthening and hydrating products with good nutrition and gentle nail care practices, individuals can significantly reduce the likelihood of nail splitting.