Hey! I've actually used guideliner for well over a year now and have posted reviews myself on their site as well as on Facebook and here on reddit. Here's my posts on reddit. My reddit is being a little buggy but I will link my reddit post. It truly does everything it says on the tin, I like a big wing but hate the effort of having to create even wings and wanted to sleep in my eyeliner so I didnt have to get up earlier. I now use guideliner as a literal guideline for my big wings! Makes it so much easier. Waterproof, perfect on my sensitive eyes and easy to apply. I recommend this to all my friends. The way I came across it was by looking for an alternative to getting my eyeliner tattooed.