Eyebrow Serum Amazon 2017
See Why These 5 Eyebrow Serums Have Over 1,000 Reviews on Amazon
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The Product: Hairgenics Lavish Lash ($30)
The Rating: 4.5 stars, over 2,100 reviews
Why People Love It: This reviewer experienced fuller and less gray brows: "I have been using this on my skimpy eyebrows for almost a month now and see improvement. They are getting fuller and appear to be less gray, which is a bonus."