Virginia Nail Technician Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Which common ingredient is often found in nail hardeners?

Acetone

Formaldehyde

Formaldehyde is commonly found in nail hardeners due to its properties that help strengthen and harden the nails. It acts as a bonding agent that enhances the structural integrity of the keratin in nails. When used in nail products, formaldehyde provides a durable protective layer, reducing brittleness and improving overall nail resilience. This ingredient is effective at helping to prevent breakage, which is particularly beneficial for individuals with weak or soft nails.

Other ingredients listed, such as acetone, alcohol, and ethyl acetate, serve different purposes. Acetone is primarily a solvent used for removing nail polish, while alcohol is often used as a disinfectant or antiseptic. Ethyl acetate also functions mainly as a solvent in nail products, such as in polish removers. These alternatives do not possess the same strengthening properties as formaldehyde, making it the preferred choice in nail hardening formulations.

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Alcohol

Ethyl Acetate

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