For shading or blending of colour or creamy products. This brush has fine, densely packed fibres that are arranged in an oval shape. LyDia professional brushes are hand-sculpted and assembled using the finest quality materials. They feature birch, linden and ramin wood handles, nickel-plated brass ferrules The whole brush length: 15.3cm(6.12inch) Hair length: 1.8cm(0.72inch) Hair root width: 0.7cm(0.28inch) The brushes are hand-made by over 3 years experiences workers. Every single hair is picked up by hand and diameter no more than 0.07mm, so it won't hurt your skin at all only leaves you soft feeling.