The Highlight Stick by Trestique, as reviewed by Kelsey, is a refillable and adorable cosmetic product. Kelsey loves the shape of the stick and finds it cute. The top and bottom of the stick can be easily popped off, with the bottom revealing a sponge. Kelsey appreciates the refillable feature of the product. The swatch of the highlight stick is described as "so pretty." Overall, the Trestique Highlight Stick seems to be a convenient and visually appealing option for those looking to add a touch of glow to their makeup routine. However, further information about the product's performance and longevity would be helpful in assessing its overall quality.