What are common allergens found in nail care products?

Formaldehyde and toluene are widely recognized as common allergens in nail care products, making this answer correct. Formaldehyde is often used as a hardening agent in nail polishes and some nail treatments, while toluene is a solvent that can be found in nail polishes and removers. Both of these chemicals can cause allergic reactions and sensitivities in some individuals, leading to symptoms such as skin irritation or respiratory issues when they come into contact with the skin or are inhaled.

The other options mentioned are not commonly associated with allergies in nail care products. Alcohol and acetone, for instance, are primarily used as solvents and for sanitization; while they may cause some dryness or irritation, they are not classified as allergens. Glycerin and lanolin are typically used for their moisturizing properties and are less known for causing allergic reactions. Lastly, sodium and chloride, which are common in table salt, do not have a significant presence in nail care products and are not recognized as allergens in this context.