Get Free NARS Foundation and Concealer Samples. If you want to get this freebie, click on the “Get FREE” button and Like the NARS Cosmetics Facebook page then like 5-10 of their posts. Like the SoPost Facebook Page as well. Search “NARS Cosmetics” on Google and Facebook. Close everything out then open Facebook and keep an eye on your newsfeed for the free sample offer post to show up. Once you see it, click the “Sign Up” button and follow the steps to claim.