SEPHO

Big by definition Mascara

4.0 1,401 reviews
Big by definition Mascara
Because every lash counts, SEPHORA COLLECTION’s Big By Definition mascara multiplies lashes by ... Learn more

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  • Description

    Because every lash counts, SEPHORA COLLECTION’s Big By Definition mascara multiplies lashes by revealing them one by one for a fuller lash fringe.

    A mascara that separates lashes one by one with its multidimensional brush.
    When volume comes from definition.

    BIG BY DEFINITION: the mascara that separates lashes for instant definition thanks to the different sized fibers in its brush. Each fiber catches every lash size, making it the ideal mascara for lower lashes and small lashes.
    Makeup result: every lash is revealed and the lash fringe is fanned out and +135% fuller (1)

    A mascara with buildable volume that densifies lashes for a result up to 3x thicker (2)
    Big By Definition isn’t just a lash-separating mascara. It goes further to give your eyes a high impact look.  With its buildable formula, this SEPHORA COLLECTION mascara adds volume for lashes that are up to 3x thicker (2).

    Formulated with vegetable-derived waxes, this mascara’s lightweight, stretchable texture envelops each lash from root to tip, smoothing and conditioning to fully define, lash after lash.
    The mascara has a buildable result that intensifies with each stroke for an ultra-black, clump-free look.
    This volumizing mascara’s lash-separating vegan formula (3) is enriched with plant-based proteins whose structure is similar to keratin.
    This long-lasting mascara won’t run or flake. It holds all day long yet is easy to remove.

    (1) Scientific test on 24 false eyelashes after 20 brush strokes.
    (2) Scientific test on 24 false eyelashes after 30 brush strokes.
    (3) Formulated with no ingredient from animal origin.

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  • Directions for use

  • Test results

  • Ingredients

  • Description
  • Directions for use
  • Test results
  • Ingredients

Because every lash counts, SEPHORA COLLECTION’s Big By Definition mascara multiplies lashes by revealing them one by one for a fuller lash fringe.

A mascara that separates lashes one by one with its multidimensional brush.
When volume comes from definition.

BIG BY DEFINITION: the mascara that separates lashes for instant definition thanks to the different sized fibers in its brush. Each fiber catches every lash size, making it the ideal mascara for lower lashes and small lashes.
Makeup result: every lash is revealed and the lash fringe is fanned out and +135% fuller (1)

A mascara with buildable volume that densifies lashes for a result up to 3x thicker (2)
Big By Definition isn’t just a lash-separating mascara. It goes further to give your eyes a high impact look.  With its buildable formula, this SEPHORA COLLECTION mascara adds volume for lashes that are up to 3x thicker (2).

Formulated with vegetable-derived waxes, this mascara’s lightweight, stretchable texture envelops each lash from root to tip, smoothing and conditioning to fully define, lash after lash.
The mascara has a buildable result that intensifies with each stroke for an ultra-black, clump-free look.
This volumizing mascara’s lash-separating vegan formula (3) is enriched with plant-based proteins whose structure is similar to keratin.
This long-lasting mascara won’t run or flake. It holds all day long yet is easy to remove.

(1) Scientific test on 24 false eyelashes after 20 brush strokes.
(2) Scientific test on 24 false eyelashes after 30 brush strokes.
(3) Formulated with no ingredient from animal origin.

How to apply Big By Definition mascara?

Apply this mascara using light zigzag motions from lash root to tip for defined, fanned-out lashes. Use the brush tip to cover small inner lashes with mascara. You can also use the mascara for lower lashes.

For an even more intense look, add additional layers of this long wear mascara until you achieve the volume you desire.

Test results for Big By Definition volume mascara:
- 95% of women say that their lashes are fully revealed: extended and separated. (1)
- 95% of women say that their lashes look fuller after application. (1)
- 95% of women say that their lashes are separated for a "lash to lash" effect. (1)
- 95% of women say that their lashes appear instantly thicker. (1)
- 95% of women say that the mascara provides a high-impact volume result. (1)

(1) % of women satisfied after 21 days. Satisfaction test on 20 volunteers.

AQUA (WATER), CI 77499 (IRON OXIDES), SYNTHETIC WAX, BUTYLENE GLYCOL, GLYCERYL STEARATE, SYNTHETIC BEESWAX, ACACIA SENEGAL GUM, STEARIC ACID, PALMITIC ACID, ORYZA SATIVA CERA (ORYZA SATIVA (RICE) BRAN WAX), POLYBUTENE, LACTOBACILLUS FERMENT, POLYGLYCERYL-6 POLYRICINOLEATE, VP/EICOSENE COPOLYMER, AMINOMETHYL PROPANOL, HELIANTHUS ANNUUS SEED CERA (HELIANTHUS ANNUUS (SUNFLOWER) SEED WAX), OLEA EUROPAEA (OLIVE) OIL UNSAPONIFIABLES, 1,2-HEXANEDIOL, CAPRYLYL GLYCOL, XANTHAN GUM, RHUS SUCCEDANEA FRUIT CERA (RHUS SUCCEDANEA FRUIT WAX), SHOREA ROBUSTA RESIN, HYDROLYZED VEGETABLE PROTEIN, YEAST EXTRACT, LEUCONOSTOC/RADISH ROOT FERMENT FILTRATE, SODIUM BENZOATE.

Reviews

4.0/5
1,567 reviews
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4.0/5
1,567 reviews
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  • 2 Rating star
  • 1 Rating star

Mellay13

16/01/2025

2/5
Verified buyer

Bring back Lash Craft!

This is clumpy and difficult to apply. No where near as good as the discontinued lash craft mascara. Why do you disrespect your loyal fans by taking away beloved products. Good mascara is so hard to find on a budget.

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15/01/2025

2/5
Verified buyer

It's ok, doesn't do much for volume for eyelashes. Comes off throughout the day. Kinda gradually melts off.

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EmilyCeleste

14/01/2025

2/5
Verified buyer

Not a fan - better alternatives out there

This was not very good. In terms of defining and volumizing, it didn’t do a spectacular job. It was just okay and I’ve definitely had better results from drugstore options. Also, I have oily eyelids and this transferred a LOT and eventually got into my eye and burned really badly. Definitely don’t recommend if transfer is a problem for you.

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Melanyavaloss

11/01/2025

5/5
Verified buyer

A must have

I love this product. It made my lashes super big and gave volume.

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Recommend this product: Yes

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jutrmb

10/01/2025

5/5
User Review without direct purchase

FAVORITE MASCARA OF ALL/ not sponsored

I LOVE this mascara. it makes my lash triple the volume and twice longer. it has been my go to for almost a year and i repurchased it every time. it also last a very long time. in 1 year i repurchased it 2 times.

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Recommend this product: Yes

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kmarch89

10/01/2025

4/5
Verified buyer

Fabulous mascara that doesn’t break the bank!

Great, affordable mascara! Super lengthening, but not spidery or clumpy. Very natural looking. Exactly what I was hoping and looking for.

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Recommend this product: Yes

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07/01/2025

2/5
User Review without direct purchase

It’s okay. Clumps a bit but also makes my eyelashes super straight. I like the applicator but not a fan of the formula. I probably won’t buy this again and I love a lot of Sephora branded products.

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06/01/2025

5/5
User Review without direct purchase

SO GOOD

made my lashes SO LONG. feels lightweight and a great price point. go buy now!

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Recommend this product: Yes

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jcgs

05/01/2025

5/5
Verified buyer

moisturizing & amplifies your lashes. washes off with soap and water or oil based face wash., just as good as the expensive brands. worth checking out- good price.

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Recommend this product: Yes

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TCL11

04/01/2025

3/5
Verified buyer

Nice length but easily smudges

Lengthens lashes really nicely but smudges through the day terribly, even if you use a primer and face setting spray.

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aubreyann72

03/01/2025

5/5
Testers' review

10/10!

One of my holy grails!! It goes on so well and it doesn’t clump or fleck too badly. This is my second bottle!

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Recommend this product: Yes

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tooklyn

03/01/2025

3/5
User Review without direct purchase

It’s ok

Being honest, this product is good and comes with a lot of product inside for the price. The only concern is it smears VERY VERY easily.

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Recommend this product: Yes

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HarmonyMUA

03/01/2025

5/5
User Review without direct purchase

A holy grail.

Love this mascara and have repurchased many times. It lasts all day, holds curl, lengthens, and is easy to remove at the end of the day (I use micellar water).

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Recommend this product: Yes

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SsKkWwCc

01/01/2025

4/5
Verified buyer

Stays well. Provides volume. Light, not heavy on your eye. No reaction to product as I often do with other mascaras.

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Recommend this product: Yes

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