Shaving the eyebrows rather than plucking or waxing is not recommended because the eyebrows will grow coarser than before. Shaving is a quick fix but not the best way to get rid of unwanted eyebrow hair.
Because razors are more difficult to use on small areas than tweezers, it is possible to shave off too much of an eyebrow. Shaving removes only the outer surface of the eyebrow hairs, which means they grow back quickly. Tweezing and waxing rip the hair out by the root in a process that not only leaves the eyebrow shaped longer but also reduces the number of hairs that grow back over time.