I got a manicure & I tend to get little smudges almost every single time, so I bought this in an effort to touch up on the go. You just click, brush, & go! I love the convenience of it & being able to just pull it out of my purse whenever I need it. Now it does seem a little milky or watery looking, but I kind of expected that since it’s in a pen. But nonetheless, it does the job, & it’s easy to use for a paint-my-own-nails challenged person like moi!