Apply a thin layer of O2 Protecting Base Coat.

Now apply two thin coats of O2 no 627(pink) to one hand and O2 no 626 (blue) to the other.

Once the polish has dried, apply two pieces of striping tape to the nails you want to add a stripe to, leaving a small gap in between. Now paint a blue stripe on the pink nails, and a pink stripe on the blue nails. The easiest way to do this is with a nail art brush. If your hands are steady enough, you can add stripes without having to use the striping tape.

Once the stripes have dried, carefully remove the striping tape.

Finish off with O2 Top Gel.