Mani of the Week: Boots 17 Crackle Top Polish

You might remember that a few weeks ago the lovely people at Boots' 17 sent me their new Supreme Shine collection? The package included their brand new Crackle Top Polish. Many brands now offer crackle top polish but I had yet to try any, so I couldn't wait to try this one out. It works best if you use a thin coat as it dries quickly and cracks as it dries. I tried it first with Boots No 7 Lovely Lilac polish which looked great but the pale undercoat meant that the effect wasn't too noticeable:

So I gave it a go with the Boots No 7 Tangy polish which I think worked better:

Have you tried any of the crackle polishes? What do you think of them?