Features: 100%Brand New and High Quality 100% Kolinsky Sable Hair Size:2#/4#/6#/8#/10# Suitable for professional salon use or personal use Package includes: No. 2 Nail Brush No. 4 Nail Brush No. 6 Nail Brush No. 8 Nail Brush No. 10 Nail Brush Considerations【BEFORE FIRST USING】In order to shape the new nail brush during the production process, a special solution was applied on the brush make it hard. Before using the nail brush for the first time, please follow the steps below to clean the nail brush:Put the new nail brush into the water, so that the bristles of the brush are submerged in the water, slightly apply pressure to the brush headand then slightly twist the bristles so that the bristles can spread out. At the same time, this process can also clean the residual glue on the surface of the bristles until the new nail brush is thoroughly clean clean. It is normal for some bristles to fall off during the first cleaning.【WASHING】Always clean the nail brush thoroughly after each processing session with brush cleaner or liquid monomer for preventing the acrylic powder on the brush from clumping. DO NOT USE ACETONE which will remove the shine from bristle make acrylic tacky and buildup residue. 【STORER】Remove as much moisture as possible with paper towel and reshape before storing, always keep aired and out of direct sunlight.Proper use, together with correct care and cleaning will ensure your brushes have longer life.