What is the primary role of cuticle oil?

The primary role of cuticle oil is to moisturize the cuticles. Cuticles are the thin layer of skin at the base of the nail that can become dry and brittle, especially when exposed to frequent washing or harsh chemicals. Applying cuticle oil helps to maintain hydration, preventing the cuticles from cracking or peeling, which in turn supports healthier nail growth. Keeping the cuticles well-moisturized also contributes to the overall appearance of the nails, ensuring they look well-groomed and promoting a healthy nail environment.

The other options do not accurately describe the function of cuticle oil; for example, coloring cuticles or removing them would not address their health or moisture needs, and while strengthening the nail bed is important, it is not the direct effect of applying cuticle oil.