What is the function of nail oils in nail care?

Nail oils are specifically designed to soften and condition the nails and cuticles, which is essential for maintaining healthy nails. These oils typically contain nourishing ingredients that penetrate the nail plate and surrounding skin, helping to hydrate and improve elasticity. This conditioning effect can prevent dryness, cracking, and peeling of the cuticles and nails, leading to overall better nail health.

While strengthening the nail structure is important, nail oils do not directly contribute to that; they primarily focus on moisturizing. Also, nail oils do not add color or serve primarily as a protective layer like topcoats do. Their primary function is caring for the nails by providing essential moisture and conditioning, which directly aligns with the chosen answer.