Everyone likes to get stuff for free. (Free samples are how I've reviewed many of the products on my blog). Here's where you can get free beauty product samples:
In-stores:
Sephora and Ulta stores will often give out free samples of select products. Check Ulta flyers for the latest giveaways. If you're in a Sephora store, you can request a take-home sample of a lotion you like.
Online:
Order online and get your choice of free samples. Available at sephora.com, ulta.com, beauty.com. Manufacturer websites (like philosophy.com) will also give out samples sometimes.
Freebie Websites:
http://www.amazingfreebies.com/
http://www.thunderfap.com/
http://www.freesamplesblog.com/
http://www.nikkisfreebiejeebies.com/