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Big by definition Mascara

4.0 1,558 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.

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4.0/5
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Terms and conditions of publication

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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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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01/01/2025

5/5
Verified buyer

Must have in my make up routine

I love how full and long it makes my lashes. I have short and thin lashes and this product is amazing.

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Recommend this product: Yes

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JujuJara

31/12/2024

5/5
User Review without direct purchase

Easy everyday mascara, love it

My new fave daily mascara! Makes my lashes slightly longer, and adds volume, not too much but enough. It’s not messy, easy to apply, great price, it checks all the boxes for me. Replaced my go-to cover girl mascara

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Recommend this product: Yes

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29/12/2024

4/5
User Review without direct purchase

pretty great product but bad applicator

after a day and a half of wearing this product, i can safely say that this mascara is very good for the price which is 13 dollars. it lifts, volumizes, and separates my lashes. one thing i dislike about this is the applicator. it collects a lot of the mascara onto it. 4 stars! this product is the

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ddannii

29/12/2024

2/5
Verified buyer

Flaky and Smudges

Worked nice at first went on great, then I noticed it would flake throughout the day and smudge under my eyes. It does this all the time, had to return.

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msc15

24/12/2024

5/5
User Review without direct purchase

really lengthening and it’s kinda like wet and doesn’t make the lashes clumpy. I love it so much! Must have in my routine.

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Recommend this product: Yes

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Alyona44

24/12/2024

5/5
User Review without direct purchase

The product lasts for months. Good price and works well.

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Recommend this product: Yes

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Rhodalily

20/12/2024

5/5
Verified buyer

Great for Volume

Great at adding volume to lashes without caking them in product! Next to no transfer or flaking.

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