I shamefully, never used a base coat when I painted my nails.
I never thought I needed one, my nails only peel every once in a while, they aren't yellow, and they grow just fine, but I wanted to see if they could still look better by using a base coat. So I went to look for a base coat and found this one from Rimmel, and the great thing about it is that is also serves as a top coat.
I painted my nails last night (now two days ago), and started with a base coat. I liked the way it made my nails look, I think I could wear them with just a base coat...or at least consider it. It dried really quick and my nail polish glided on smoothly. It has been two days, my nail polish hasn't chipped, and it is still extremely glossy and smooth.
Today is the third day, and I know I will be keeping it on for tomorrow. But I think after tomorrow I will try out this product with my most hated nail polish, Sally Hansen's Hard as Nails in Mint Sorbet, and see if maybe, just maybe, it will help out the polish.
Overall, and so far, I really like this product. I like that it dries fast and stays glossy. It makes my nails look like I just painted them, serves as a base coat AND top coat, and only cost $4.49 at my local grocery store.