Kjaer Weis Definition Brush in White. Kjaer Weis Definition Brush in White. Designed with stiffer bristles for extra control, the Kjaer Weis Blending Brush is perfect for adding intensity to the eye area. Made with densely packed synthetic fibers, it allows you to create gorgeous definition along the crease, upper, and lower lash lines.. Vegan, hypoallergenic, and cruelty-free. KJER-WU121. 1005EB. Kjaer Weis is uniquely versatile, gorgeously flattering & high-performance beauty powered by hand selected Certified Organic ingredients. Danish-born, NYC-based makeup artist Kirsten Kjaer Weis masters a beauty look that flatters every face with skincare-powered color so nourishing and intuitive it becomes one with skin. Exuding a Scandinavian thoughtfulness and a boldness and energy that is undeniably NYC, each product has been meticulously crafted to ensure that it is beautifully complementary to each woman wearing it while simultaneously improving the look of skin over time. Kjaer Weis is rooted in sustainability. Their certified-organic formula ensures high performance while being good for you and the planet. The brand's products are housed in completely refillable and recyclable compacts that look like contemporary art. Each detail is considered and deliberate with the goal of elevating the Kjaer Weis user to instant-artist status while making their best-self more effortless.