The best way to strengthen nails is to keep them hydrated and ensure proper nutrition. Harsh chemicals, alcohols and too much water exposure can all make nails dry and brittle.
Brittle nails are often the result of exposure to harsh chemicals, detergents and heat. A moisturizing product, such as a serum or a ridge filler with water as an ingredient, can help nails become more flexible and less prone to break. To prevent nails from becoming brittle in the first place, it is important to keep them protected with gloves when cleaning or washing dishes. Alcohol-based hand sanitizers also tend to dehydrate the nails and skin, so they should be avoided. Nail polish removers with acetone likewise tend to weaken nails; acetone-free polish removers should be used instead. Additionally, it is important to stay hydrated by drinking enough water.
A hand cream is also a recommended treatment for brittle nails. Nails can benefit from the same moisturizing ingredients as the ones intended for skin. Nutritional deficiencies may also cause nails to become weak. It is important to ensure that one's diet includes plenty of vitamin B7, also known as biotin. Biotin is essential to growing strong, healthy nails, skin and hair.