Butter-Fly Stroke is a great yellow polish from the Insta-dri line. I found it a few weeks ago at Target on clearance and since I have a yellow addiction I just had to pick it up. Even though Insta-Dri polish formula are usually great coverage in one to two coats this one did take three but still wasn't that bad considering yellows usually suck when it comes to formula. The first two coats were streaky but the third coat fixed it. I topped it off with a layer of Seche Vite. Yellow polishes are one of my favorite colors to wear so I am glad to have found another good one for my collection. I can't wait to try it as a stamping polish either and will make sure to post here the results.