On Wednesday 27 November between 5pm and 8pm local, buy any participating nail polish and get a second one free.   Excludes nail accessories, gel accessories, gel starter kits, prestige nail polishes and nail polish removers. Coupon must be presented at the time of purchase in order to receive the offer.  Click here to print your coupon.

It does not say which brands are participating but from the image, it looks like most of the major brands should be included.