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Summary
Pro Brow Definer 1MM-Tip Brow Pencil by MAC, a pin-thin 24HR brow definer that delivers natural high definition, hair-like strokes with a water- and smudge-proof formula for 24 hour wear. Our finest brow definer featuring 14 shades with true colour payoff that serve up fuller-looking brows all day.
Benefits
- Long-wearing, 24 hours
- Waterproof
- Smudge-proof, color-true and non-fading, 24 hours
- Transfer-resistant
- Dual-ended 1mm precision tip and spoolie
- 14 true-to-you shades
Key Ingredients
- Unique blend of carnauba wax, castor, argan & coconut oils: Help pigments glide on to resist tugging and breakage
Apply the eyebrow pencil using small, quick strokes in the direction of natural hair growth to fill in and shape for a naturally defined look.
The 1mm precision tip mimics the look of natural hair.
Blend pigment with the spoolie end for a seamless diffused finish.
Hydrogenated Soybean Oil, Hydrogenated Coco-Glycerides, Zinc Stearate, Hydrogenated Vegetable Oil, Rhus Verniciflua Peel Wax, Copernicia Cerifera (Carnauba) Wax\ Copernicia Cerifera Cera \Cire De Carnauba, Caprylic/Capric Glycerides, Argania Spinosa Kernel Oil, Cocos Nucifera (Coconut) Oil, Hydrogenated Castor Oil, Tocopherol, [+/- Titanium Dioxide (CI 77891), Iron Oxides (CI 77491), Iron Oxides (CI 77492), Iron Oxides (CI 77499), Blue 1 Lake (CI 42090), Yellow 5 Lake (CI 19140)]
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Questions
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Reviews
Write A REVIEWReview Snapshot
by PowerReviews
Ratings Distribution
Best Uses
- 5Eyebrows
- 4Everyday
- 3Natural look
- 2Brows
- 2Natural Look
Describe Yourself
- 2Brown eyes
- 2Makeup lover
- 2Natural look
- 2Makeup enthusiast
- 2MAC lover
Most Helpful Positive Review
MAC Pro Brow Definer
The MAC Pro Brow Definer is a game-changer for achieving perfectly sculpted brows. Its precise tip allows for effortless application, helping to define and shape brows with ease. Compared to other brow products I've tried, the MAC Pro Brow Definer stands out for its precise application and long-las...
Most Helpful Critical Review
Great design unimpressed with formulation
Overall, I was unimpressed with this product. The formulation was underwhelming and a bit drying, not harsh but also not the satin feel I prefer. The neutral color hardly showed up on my skin. It was not pigmented enough in my opinion, at least not for deeper tone skin. Maybe this may work on fair s...
973 results
PLEASE GO BACK TO THE OLD VERSION BEFORE THE 1MM
Reviewed at

Comments about FLING
I'm so sad you changed this eyebrow pencil. I've been using fling since 2011. The new 1MM style may be fine if you just need a little eyebrow help, but for those of us that have extremely sparse eyebrows, it just doesn't work. It's too thin. I go through this tiny tube in 3 weeks and it's too colored in. I tried to like it bc the color is so good, but I'm unfortunately going to have to look elsewhere. You should have kept the old, but also introduced the new. Sorry to go.
Hate the new design
Verified Reviewer
Reviewed at

Comments about LINGERING
Why did you change this? What is this thing? The new design barely lasted 2 months, breaks off often, and is a huge dud.
Disappointed Loyal Customer
Verified Reviewer
Reviewed at

Comments about STRUT
I've used this brow pencil for many years and seen three iterations. In this current version, the color is muted, much weaker than the previous two versions. Also, it is outrageous that MAC would choose to dramatically reduce the amount of product in the package! Plus, it's just annoying to constantly stop to dispense more pencil during application. Unfortunately, my search begins for a new brand of brow pencil.

Go back, please we're begging you
To be charging the same price as the old pencil for one third of the amount of product is frankly insulting. My lifelong search was finally over with the original formula, and the next time I go to buy it it's this trash instead. Just because every other brand is suddenly coming out with 1mm pencils doesn't mean you have to go and change something in your existing line that was already perfect. I can only hope that the absolutely devastating review ratio will make them see the error of their ways and go back to old formula/format. You don't mess with people's beloved brow products!! It's the one thing we need to be reliably consistent! I have incredibly light, sparse brows, and the old Thunder was just perfect, I have no other adjective. It was the perfect level of pigmentation, stiff but not too waxy, I could never overdo it and end up with blocky brows, plus it was actually truly cool toned which is so hard to find. I'm just mad and sad every time I think about this whole situation.
Totally Disappointed
Verified Reviewer
Reviewed at

Comments about FLING
I've used the old Mac fling brow pencil for like over 20 years. I'm a natural redhead and the color/ texture was the best for my fair features. This new micro pencil is a waste. Literally you get like 5 applications out of the whole stick. The tip is constantly breaking because it's too small. It's just a horrible replacement of a really solid product. Bring back the old eyebrow pencil Mac- this new one is horrible.