I found this product very easy to use, I'm just not very good at shaping my own brows. I did lose all of the cotton things before the product wore out.
Personally I prefer a hot wax to this. I find the adhesive is not brilliant and it takes a few goes to remove all of the hair.
For best results, wash and dry your face before applying the wax. The slimline, twist up applicator is really easy to use, although I did expect the wax to come out of the top of the applicator and not through a hole on one side. Application is easy with no mess and I use it on both my eyebrows and upper lip. Be sure to hold your skin with one hand, so that it's tight, before removing the strip with the other. If your skin moves with the removal of the strip, there's less chance of the hairs being pulled out.
The water-soluble wax and cotton strips are much more gentle than pre-waxed strips (like Veet Ready to Use Wax Strips for Face) and don’t leave my skin as red. If I do miss any hairs, I can easily reapply the wax to the area and wax it again without irritating my skin.
The cotton strips are washable and reusable and easily come clean in warm water. I wash and reuse my strips and all they need is a light rinse, no soap required and are left to air dry. I’ve only used 6 strips from the box and just wish that they would make a wax refill, as it would be more economical than having to buy the whole applicator (and more strips) whenever the wax runs out.
After waxing, any residue washes off my skin easily with warm water.
Tips: Warm the tube of wax before using. I prefer to wrap the tube in a hot cloth for a few minutes (while I wash my face), instead of standing the tube in water. The warm wax is easier to spread and more hairs are removed.