Wow!! This eyelash primer is impressive!! The bright blue color shows up brightly to let you know what lashes you have coated. It adds a tremendous amount of volume. I'll let it dry and go over it with my black mascara, and it seems to help my lashes look fuller while holding a curl. It's very affordable and the brush is very durable. It doesn't dry out quickly and lasts a long time. The product does dry on your eyelashes quickly, though. If you are looking for a blue mascara and I mean a bright blue cobalt blue mascara that lasts all day this is definitely the one for you even though it's marketed as a primer it would make a brilliant blue mascara on its own. I highly recommend it and we'll definitely purchase in the future.