Just ask Alexa or Google!
Get a free sample of Nars Climax mascara through Send me a Sample. If you’ve already set it up, just say “Hey Google/Alexa Send me a Sample” and when it asks which sample say “Nars” and choose if you want buildable or instant volume, then it should automatically send you free makeup.

If you’ve never used Send me a Sample before, you’ll need to use the Alexa or Google Home app to set it up with your details like your name and address. Find out more on the Send me a Sample site.
For Alexa, you’ll need to enable the skill first, but you should be able to ask Google straight away. If you don’t have a Google Home or an Android device, the Google Home app is available on iOS.
Easy peasy! Be quick though, as they run out quickly. If you’re unsuccessful try again another day because they do re-stock.