Suitable for makeup application, nail art, painting, crafting projects, Jewelry washing, gun washing, etc. Perfect micro brushes, great for detailing and getting in hard to reach areas. No more fuzz left behind from cotton applicators, or irritation from plastic applicators. Great microbrush applicators, they are much easier to use than the brushes that come with the eyelash serum. You're able to get right along the lash line, with no dripping or mess. ABSOLUTELY outstanding solution to the problem of waste when using the eyelash prescription product! No more product waste! Saves and makes eyelash serum last longer and you can make a precise line.