I love the polish up serum. The way my installs glide through my hot tools it’s like butter. So light weight . Smells amazing, it is an essential product in my styling kit along with the wax stick. It’s so hard to find one that’s not heavy or extremely sticky on the first application. Let’s talk about the gel while I’m here as well I use it to mold baby hair or to sleek back edges for and install , it can also be used to mold the edge of the caps down. Let’s not forget … you know what just buy the products that’s all Ima say!