A beauty box is a subscription service where for a fee of from £9.95 to roughly £13 you receive a box through the post full of beauty samples from brand names and sometimes if you're lucky full size products. Clients(mostly girls) feel excited about upcoming box which is delivered to them every month and so they share their excitement on Facebook, Twitter, Blog or even Youtube and by that advertise the companies. I would say a very nice marketing strategy!
In fact, now even I am advertising Sample Boxes :)
2nd March, 2012London, UK