If you are planning to pluck, shave or thread your eyebrows, think carefully about the results...and how long they are likely to last. While it is possible to "fill in" brows that have been over-shaped or removed already, the result is always noticeable. Take time to consider what you want for a long-term look.
How Long to Grow Back?
The average rate of eyebrow growth in an adult is about 0.16mm a day, much slower than the rate of scalp hair growth, which is an average of a half an inch a month. The length of a hair growth cycle, however, is longer in scalp hair than in eyebrow hair. Where it takes 116 days on average to replace a plucked scalp hair, it takes approximately 56 days to grow an eyebrow back after plucking. That means that for close to two months the brow will be bald or in some intermediate "spiky" stage of growth. For comparatively minor plucking that will seldom be noticed, new hair will slide into place, gently blending with the remaining arc of hair. If you have removed a large amount of hair in an attempt to redesign your brow, the results can be dramatic, with all your associates able to watch the empty skin slowly fuzz out as the new hair comes in all at once in a single patch.
Do Any Methods Work Longer?
Only hair removal by electrolysis is recognised by the FDA and the AMA as permanent. This method works by killing the follicle outright, and leaves you with a permanent bald patch. Laser and chemical removal methods can provide long lasting results but are often not permanent and may have side effects, including skin irritation and discolouration. Over plucking, waxing and other forms of repeated hair removal by pulling out the hair can lead to a slow thinning of the hair, but seldom are considered a reliable method of permanent hair removal.
Radical experiments with style can be recovered from with plucking, shaving and threading. With electrolysis they are permanent.