The Spot Stick Concealer in Fair with yellow undertones color by Jillian Dempsey is a compact and convenient option for on-the-go touch-ups. Jess mentions that the concealer is small and skinny, making it easy to carry in a purse or for a quick touch-up during a sleepover. However, Jess notes that the formula is not the creamiest and lacks the liquid consistency they are used to in concealers. This may require using the product sparingly to achieve the desired coverage. Despite this drawback, the Spot Stick Concealer offers portability and convenience, making it a handy addition to one's makeup routine.