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Kosas Big Clean Mascara
Big Lash Energy
Application for Big Clean Mascara 1
Big Clean Mascara Proven Results
Hair Care Serum of Big Clean Mascara
Big Clean Mascara Ingredients
Application for Big Clean Mascara 2
Safe for Sensitive Skin
Application for Big Clean Mascara 3

The Big Clean Mascara

Clean Longwear Mascara

444 total customer reviews
Size9.5 g / 0.34 oz
Intense Black

Free Shipping on US Orders $40+ & Free Returns

Longwear Formula,Big Fluffy Lashes 

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Benefits & Ingredients
Castor Oil

Helps lashes reach full growth potential

Provitamin B5

Helps revive lashes

Biotinoyl Tripeptide-1

Supports healthier, fuller hair

Plant-Based Sugars

Provides longwear without microplastics

Pairs Best With

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Volumizing treatment gel
 

100% Saw Longer, Thicker, Lusher Lashes

Get max volume and separation with the cleanest ingredients. Biodegradable plant-based sugars replace traditionally used microplastics for a longwearing formula + big, fluffy, lash-extension impact.

Big Lash Energy

Natural body-building ingredients and pure, intense pigments deliver a big lash vibe. The oversized curved brush (like a rainbow) has flexible-yet-firm spiraled bristles that volumize, lengthen, separate, and curl lashes all the way up. 

Powerful Hair Care Serum For Clinically Proven Results

The active formula nourishes and protects to support stronger, healthier lashes over time. Every swipe helps lash hairs reach their full growth potential.

See It In Action

A few before & afters of The Big Clean. Your lashes, but bigger.

Kosas Clean

Cruelty-free and gluten-free. Formulated without: carbon black, acrylates, mineral oil, talc, silicones, fragrance, parabens, sulfates, and phthalates.

Check out our Kosas Clean page for the full list.

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3.5
Rated 3.5 out of 5 stars
Based on 444 reviews
Total 5 star reviews: 126 Total 4 star reviews: 123 Total 3 star reviews: 99 Total 2 star reviews: 51 Total 1 star reviews: 45
56%would recommend this product
444 reviews
  • BR
    Brittany R.
    Verified Buyer
    Age Range 35 - 44
    Astrology Air — Gemini; Libra; Aquarius
    Hair Color Brown
    Skin Tone Light
    Skin Type Dry
    Recommend Yes -1000%
    12 seconds ago
    Age Range 35 - 44
    Astrology Air — Gemini; Libra; Aquarius
    Hair Color Brown
    Skin Tone Light
    Skin Type Dry
    Recommend Yes -1000%
    Rated 5 out of 5 stars
    Gorgeous Lashes

    Received this mascara as part of my “try the website” box and loved how full it made my eyelashes look. It stayed on really well. I traveled for 7 hours the day I tried it and it looked great the entire time. It washed off fairly easy and didn’t leave black streaks across my face like other mascaras do when removing.

  • TS
    Tracey S.
    Verified Buyer
    Age Range 35 - 44
    Astrology Fire — Aries; Leo; Sagittarius
    Hair Color Brown
    Skin Tone Fair
    Skin Type Dry
    Recommend Yes -1000%
    1 week ago
    Age Range 35 - 44
    Astrology Fire — Aries; Leo; Sagittarius
    Hair Color Brown
    Skin Tone Fair
    Skin Type Dry
    Recommend Yes -1000%
    Rated 5 out of 5 stars
    Love this mascara!

    I read that this has been reformulated, but I am new to Kosas so I can’t speak to that. What I can say is this wand and this formula are so easy to use and make my lashes perfectly separated and gorgeous! I have short straight lashes, but this makes them look long and lifted. Works as well as Ilia, but I like this wand better for sure. Easily washes off, no fallout, and no clumps. You can really build it, but I use just one coat and am ready to go.

  • KS
    Krista S.
    Verified Buyer
    Age Range 45 - 54
    Hair Color Brown
    Skin Tone Light
    Skin Type Oily
    Recommend Yes -1000%
    1 month ago
    Age Range 45 - 54
    Hair Color Brown
    Skin Tone Light
    Skin Type Oily
    Recommend Yes -1000%
    Rated 5 out of 5 stars
    Love the formula

    I really like this formula! Have already noticed a difference in my eyelashes growing in thicker after just using this for a few weeks.

  • KC
    Kimberly C.
    Verified Buyer
    Age Range 35 - 44
    Hair Color Brown
    Recommend Yes -1000%
    1 month ago
    Age Range 35 - 44
    Hair Color Brown
    Recommend Yes -1000%
    Rated 5 out of 5 stars
    Love the mascara

    Love it. Doesn’t clump and barely transfers. I have Asian eyes that are oily and mascara always ends up everywhere around my my eyes. So I’m happy that this one barely transfers.

  • CG
    Carmin G.
    Verified Buyer
    Age Range 25 - 34
    Hair Color Brown
    Skin Tone Medium
    Skin Type Combination
    Recommend Yes -1000%
    2 months ago
    Age Range 25 - 34
    Hair Color Brown
    Skin Tone Medium
    Skin Type Combination
    Recommend Yes -1000%
    Rated 5 out of 5 stars
    Perfect

    This has a really good balance between wet and dry…I curl my eyelashes and this goes on smooth, but not super wet, so it holds things up well. This is my third bottle and I’m pretty sold.

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