What it is: A crackle top coat to create a gorgeous nail art effect in minutes.What it does: Create a gorgeous nail art effect using these innovative new crackle polishes. Simply apply crackle over your favorite nails inc. polish and watch the magic happen your base color will appear through the crack. Crackle is also the perfect day to night effect. Transform the color you have been wearing during the day by applying the crackle top coat. It's so easy to do and looks like you have spent hours creating a design. Experiment with different color combinations at home or on the go! What else you need to know:Every crackle also needs a base color. It does not work on a natural nail. The polish shade should always be lighter and a contrasting color to the crackle. For example, Cambridge Terrace silver polish looks incredible under Camden Black Crackle top coat, Hoxton Purple Crackle top coat and Clapham Teal Crackle top coat. Islington Pink Crackle top coat looks stunning over Floral Street white polish. What it is formulated WITHOUT:- Parabens- Sulfates- Synthetic Fragrances- Phthalates- GMOs- Triclosan