New Jersey Cosmetology and Hairstyling Practice Exam

What can cause nails to become weak and brittle?

1. Frequent manicures

2. Too much nail polish

3. Excessive exposure to water and harsh chemicals

4. Lack of exposure to air

The correct answer is: Excessive exposure to water and harsh chemicals

Nails can become weak and brittle due to excessive exposure to water and harsh chemicals. When nails are frequently submerged in water, the moisture can disrupt the natural balance of the nail structure, leading to softening and weakening over time. Additionally, harsh chemicals found in cleaning products, detergents, and some nail care products can strip the nails of their natural oils, further compromising their strength and integrity. Regular exposure to these elements can lead to nails that are prone to splitting, breaking, and peeling, which is why it's crucial for individuals to take precautions, such as wearing gloves while doing household chores and using nourishing products to keep nails healthy. Other factors, like frequent manicures or excessive use of nail polish, may contribute to nail health but are less directly impactful than exposure to damaging substances.