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.
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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- AAshleyVerified Buyer3 weeks agoRated 5 out of 5 stars5 Stars
I love this mascara!
- LLINDAVerified Buyer3 weeks agoRated 5 out of 5 stars5 Stars
Love it 😍
- HHaleyVerified BuyerAge Range 25 - 34Astrology Air — Gemini; Libra; AquariusHair Color BlackSkin Tone MediumSkin Type CombinationRecommend Yes -1000%1 month agoAge Range 25 - 34Astrology Air — Gemini; Libra; AquariusHair Color BlackSkin Tone MediumSkin Type CombinationRecommend Yes -1000%Rated 5 out of 5 starsLoved it so much I had to have another one!
I fell in love with with mascara and the formula upon purchasing it the charm store. I didn’t try it out for a while as I was working through a couple other brands and I’m so, so sad I waited as long as I did. It’s only been about a month of use and have been hooked since use two! Loved it so much that I don’t want to find myself without it so I got a backup, thank you for being my go to mascara! Volume, length, no clumping, perfect black and separates my lashes like a dream 😊❤️KCKosas Cosmetics1 month ago
Hi Haley! We are so happy you're loving The Big Clean! It looks stunning on you 💖
- DDenelleVerified Buyer2 months agoRated 5 out of 5 stars5 Stars
- RRoriVerified Buyer2 months agoRated 5 out of 5 stars5 Stars
Great for length / volume for and a natural look. I’ve been looking for cleaner products to replace my current favorites. The only complaint is the smudging. I live in FL - and it’s hot and by end of the day I have smudges underneath my eyes. That’s the only downside in my opinion…