Current selected color: Fling (taupe blonde)
In stock: Usually ships within 2 business days.
Product Details

Boost your brow game. Gives brows a voluminous boost in a single swoop for perfectly polished to expertly undone looks. This tinted formula effortlessly creates fuller, thicker, fluffier brows with small synthetic microfibers that help build, define and shape brow hairs. Its waterproof, perspiration-proof formula helps ensure that color and volume are locked in all day and night.

  • Long wearing (24 hours)
  • Volumizing and buildable
  • Perspiration-proof and waterproof
  • Smudge-proof and fade-proof
  • Non-flaking
  • Starting at the inner brows, brush upward and outward in short strokes
  • Follow the direction of hair growth for a natural, effortless look
  • Use the tip of the brush to fill in specific areas
  • Repeat until desired effect is achieved
  • America's #1 Makeup Brand*
  • *Source: The NPD Group/ U.S. Prestige Beauty Total Measured Market, Makeup Unit Sales, Annual 2019

Web ID: 10536701

Customer reviews

374 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Customer images
    Jan 18, 2023
    from Puerto Rico
    Mac eyebrow boost

    Excellent product

    Jan 07, 2023
    from Sacramento
    Instant Brow Volume

    [This review was collected as part of a promotion.] I have not been keeping up with the latest 2023 beauty trends. But for the longest time, the trend has always been brushed-up / gel-ed fluffy feathered brows. While I am not genetically blessed with thick brows, I could always cheat it by coating them with my MAC Cosmetics Eye Brows Big Boost Fibre Gel. I got it in the shade Spiked which is a deep brunette shade that works great with most skin tones. What I enjoyed about this product is its gel formula has Tri-Fibre Technology that gives your brows buildable volume AND locks everything in place. It is longwearing too as it is also waterproof and smudge-proof! No parabens, gluten, phthalate, formaldehyde and more - just fluffier brows!

    Customer review from
    Jan 07, 2023
    from Black Hawk
    Quick Brows!!

    [This review was collected as part of a promotion.] I absolutely love this product! This gel is super easy to brush threw my brows and gives them dimension, and fullness within seconds. The product stays in place all day! it is also buildable, so I can make my brows look fuller or just a little more tamed. I will certainly be purchasing MAC - Eye Brows Big Boost Fiber Gel again in the future!!

    Customer review from
    Jan 04, 2023
    from Brooklyn

    [This review was collected as part of a promotion.] This is my new go to. I absolutely love it. I am absolutely going to buy more so that I can keep using it.

    Customer review from
    Dec 20, 2022
    from Massachusetts
    Love it!

    [This review was collected as part of a promotion.] First time trying an eyebrow product from MAC and it seems to be a great gel that keeps your eyebrows looking full and healthy, while the color may have been a bit darker to match my eyebrow color the wand is easy to use and does give eyebrow hairs more volume and make your eyebrows look great!

    Customer review from
    Dec 15, 2022
    from California U.S.A
    Best boost fibre gel fling

    [This review was collected as part of a promotion.] Mac Cosmetics Eye Brows Big Boost Fibre Gel Fling is the best boost fibre gel fling I've ever used. I definitely recommend it to everyone to give it a try.

    Customer review from
    Best brow
    Dec 14, 2022
    from Georgia
    Best brow product

    [This review was collected as part of a promotion.] This really works. It makes your brows look fuller without the extra.

    Customer review from
    Dec 13, 2022
    from Stevenson Ranch
    Good powder gel

    [This review was collected as part of a promotion.] I like the texture of this gel, brush is very good makes eyebrows looks good also I like how it's tinted . No fragrances added.

    Customer review from