If you have a Walgreens Balance Rewards card and a SmartSource insert from 7/28, you can score some free Revlon Nail Polish. You can get Revlon Core, Top Speed, Colorstay or Brilliant-strength Nail Color at Walgreens for $4.99 with card. Use the $2.00 off one Revlon cosmetic found in the SmartSource insert and you’ll get $3.00 back in Register Rewards (good on your next purchase).