Sephora Collection Big By Definition Defining & Volumizing Mascara Is a One-Coat Wonder for Creating Bold Lashes—Review
NewsletterSign InSearchSearchNewsletterBest of BeautyNewsSkinMakeupHairNailsWellnessShoppingAllure Beauty BoxNewsletterVideoBeauty Product ReviewsSephora Collection Big By Definition Defining & Volumizing Mascara Is a One-Coat Wonder for Creating Bold LashesThe big-brush mascara’s thick bristles grip onto each lash to fan them out—in a single swipe of the wand.By Sarah KinonenNovember 17, 2025$15 at SephoraSave StorySave this storySave StorySave this storyTL;DR: You know what they say about big brushes… bigger lashes. And the Sephora Collection Big By Definition Defining & Volumizing Mascara gives the biggest, which is why it’s in the November Allure Beauty Box. (That, and editors just really love it.) But that’s not why I like it. I mean, don’t get me wrong, fullness is great, but what really impresses me is the fact that it only takes one coat to instantly bulk up lashes. And for someone who, 99.9% of the time, is in a rush because I’ve procrastinated getting ready until the very last possible minute… I simply do not have time for multiple coats.