Offering the thinnest width fibre bundle of the Linear brushes, the Linear 1 creates a line shape about 2mm wide, which makes it excellent for creating tight lines around the eye and filling in the eyebrows. The Linear 1 brush is designed to be used with liquid, cream or powder products such as: Lip color Eyeshadow Eyebrow color Eye liner Skincare products The Elite Collection handles use paired elliptical/oval shapes with a bundle design that offers thousands of fibres all aligned to form a linear shape. The double oval design and unique bundle orientation is exclusively patented by Artis, and CosmeFibre® is trademarked. The Elite Collection handles are produced using a proprietary metal alloy similar to what is used in the manufacture of luxury car engines.