What it is: An endlessly stackable waterproof mascara, featuring a smudgeproof formula that stays put for up to 24 hours.
Formulation Type: Volumizing, Lengthening
Benefits: Long-wearing, Waterproof
Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, hydroquinone, sulfates SLS & SLES, and triclosan.
What Else You Need to Know: This waterproof mascara delivers up to 24-hour wear with Drench-Defense Technology to resist smudging, tears, and humidity. Build endless layers of lash volume, length, and lift with this clump-resistant, flake-proof formula. It’s safe for sensitive eyes and contact lens wearers.
Clinical Results: In consumer testing on 109 people, after using M·A·CStack Waterproof Mascara for 1 week:
I had been looking for a great, not just good, but great waterproof mascara for years. I've tried YSL, Too Faced, and Urban Decay. I think I found my Holy Grail waterproof mascara. MAC's Stack Smudge-Proof Volumizing + Lengthening Waterproof Mascara. I love that one to two applications get you good coverage on your lashes. I like to 'super stack' it - I apply 15 to 20 coats and my lashes look A-MA-ZING! By applying that many coats with this mascara, my real lashes look like falsies, which I love the look for when I need a more dramatic eye. Also, I've been swimming a lot this summer and MAC's mascara doesn't run, stays put, and I don't have racoon eyes in the Arizona summer heat. I highly recommend.
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desertgirl74
Brown eyes, Tan skin tone, Oily skin
Verified Purchase
3w ago
Almost a five star
The finish is gorgeous even the packaging, you can get a good grip while application however the bristles are spiky enough that when i poked my eyes accidentally, i need to get an eye drop from my Eye Dr. my bad. So i cant give 5 stars.
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Yana46
Gray eyes, Combination skin
Verified Purchase
1mo ago
This mascara unfortunately is awful, it left horrible smudging under my eyes from transfer wearing it throughout the day and I found the wand shape to be awkward
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lmw97
Hazel eyes, Medium Tan skin tone, Oily skin
2mos ago
Recommended
Ideal Mascara
I’ve been using the waterproof version of the M·A·CStack Mascara every day for about a week now, and overall I’m really impressed with it. The first thing I noticed was how buildable it is — one coat gives a more natural, lifted look, but adding extra coats made my lashes look noticeably fuller and longer without getting super clumpy. I also liked that the formula held a curl all day, even during humid weather and long days out. Since it’s waterproof, it stayed put really well and didn’t smudge under my eyes, which is usually a problem for me with other mascaras. The brush is also great for reaching smaller lashes in the corners without making a mess. One downside is that it can feel a little difficult to remove at the end of the day, even with makeup remover, so I had to be careful not to rub my eyes too much. After layering several coats, it also started to feel slightly heavy on my lashes. Still, for a waterproof mascara, it gives a really pretty dramatic look while lasting all day, and I can definitely see myself continuing to use it. I received this product for free from MAC Cosmetics for testing and review purposes.
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am2006
Brown eyes, Medium Tan skin tone, Normal skin
Incentivized
2mos ago
Recommended
New favorite mascara!
M·A·C Stack Smudge-Proof Volumizing + Lengthening Waterproof Mascara has been my go-to for a couple of weeks now and with good reasons! It's an intense black mascara with a comb that grabs individual lashes with ease to build volume and length. My lashes don't weigh down when I apply it and, because of the formula being waterproof, it holds the curl and shape after a full day of wear. It's so comfortable and lightweight without enduring that feeling of stiff lashes that other waterproof mascaras have given me in the past. Also, amazed that even on the most humid and hot days, there was no fear of smudging at all! A breeze to remove with micellar water and/or oil cleanser/balm. I was impressed all around and definitely recommend it! I received this product for free from MAC Cosmetics for testing and review purposes.
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dorule
Incentivized
2mos ago
Recommended
Good for sensitive eyes
Such a unique mascara wand. The bristles actually separate each of my eyelash. It didn’t clump. Used it in the morning. My eyes were not watery not itching from it. It washes off effortlessly.
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Avisam09
Brown eyes, Medium skin tone, Combination skin
Incentivized
2mos ago
Recommended
In love 😍😍😍
I’m obsessed with the M·A·C Stack Waterproof Mascara 😍 It gives my lashes amazing volume and length without feeling heavy or clumpy. The waterproof formula holds up so well throughout the day while still keeping my lashes looking soft and lifted. Definitely one of my new favorite mascaras! I received this product for free from MAC Cosmetics for testing and review purposes.
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Mimsk
Incentivized
2mos ago
Recommended
Waterproof fr
I actually really enjoyed this mascara! It wasn’t clumpy, and had a nice voluminous effect. They’re not joking about the waterproof, it lasted through a 12 hour day and at the end makeup wipes weren’t cutting it. After a quick oil cleanse it was all good. “I received this product for free from MAC Cosmetics for testing and review purposes.”
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TheDeBrief
Rich skin tone, Combination skin
Incentivized
2mos ago
Recommended
I’ve been using the M·A·CStack Smudge-Proof Volumizing + Lengthening Waterproof Mascara in the mornings for about a week, and I’m really impressed with how well it holds up throughout the day. The formula feels lightweight on my lashes but still gives noticeable volume and length without looking clumpy. I also love that it truly stays put — even after long days and humid weather, I didn’t notice any smudging or flaking under my eyes.
The brush makes it easy to build up the mascara for a more dramatic look while still separating my lashes nicely. The texture is smooth and easy to apply, and although waterproof mascaras can sometimes feel stiff, this one kept my lashes looking lifted and soft. Overall, it’s a great option if you want long-lasting volume and definition that survives all-day wear.
I received this product for free from MAC Cosmetics for testing and review purposes.
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Teeteesp
Light Medium skin tone, Combination skin
Incentivized
2mos ago
Recommended
Great volume
Gives great volume to my lashes and stays on all day. Definitely waterproof. Clumps up a bit. Easy to clean off compared to others. I received this product for free from MAC Cosmetics for testing and review purposes.
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ashi3s
Brown eyes, Medium skin tone, Oily skin
Incentivized
What it is: An endlessly stackable waterproof mascara, featuring a smudgeproof formula that stays put for up to 24 hours.
Formulation Type: Volumizing, Lengthening
Benefits: Long-wearing, Waterproof
Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, hydroquinone, sulfates SLS & SLES, and triclosan.
What Else You Need to Know: This waterproof mascara delivers up to 24-hour wear with Drench-Defense Technology to resist smudging, tears, and humidity. Build endless layers of lash volume, length, and lift with this clump-resistant, flake-proof formula. It’s safe for sensitive eyes and contact lens wearers.
Clinical Results: In consumer testing on 109 people, after using M·A·CStack Waterproof Mascara for 1 week:
