On to the rainbow nails! This one’s always a nice treat for me as typically I steer clear of multicolour combinations. This style is a play on my streaky watercolour look using a flat nail art brush (much like this one). I didn’t thin out the polish as much as shown in the video because I wanted the brush strokes to be more visible.

For The Nails…

I used Barry M White as my base colour, let it dry thoroughly, and painted on the colours with a flat nail art brush.
Those colours are
Red: OPI Cinnamon Sweet
Orange: NYC Sunny Manhattan
Yellow: NYC Lexington Yellow mixed with Revlon Buttercup
Green: Sally Hansen Grass Slipper and Kriston 10
Blue: Kriston 52
Purple: Lacquer Lab Ultra Violet