You need two colours I’m using lilac and pink.

First paint a base coat of the lilac.

Once it’s dry, paint pink over the top but leave a gap on the side as wide as you want your stripes to be.

Paint the lilac over the top leaving another small gap so there is a stripe of pink showing through.

Continue alternating colours until you have no more room on the nail. By layering the polishes you create the striped finish.

Once everything is completely dry you can top coat which will even out the surface.

Easy! and a great alternative if you don’t have a striping brush.