Cuttte 500pcs eyelash applicator brushes 2.0mm are great for detailing and getting in hard to reach areas, especially for eyelash application. Use this for eyelash serum instead of the brushes that come with the product. The microbrush absorbs a drop of solution and allows one to apply it in a fine line along the lashes. Saves and makes eyelash serum last longer. These micro applicators are also widely used in applying diamond gel for nail embellishments, washing Jewelry, washing gun, painting fine details, crafting glue in tiny places, etc. This will become your daily needs.