Great site for makeup-aholics like me! You swap your unwanted makeup/bath and body products,

and sometimes clothes, for other products. You sign up, and start listing your products, and start swapping!

And, the only cost is shipping postage to the other person (ala PBS). It's great for those of use who want more, 

but cannot afford more! And less waste in the environment, also. 

www.makeupalley.com

Just click "Swap", and go!

I glanced at it, but can't see too many details without registering.  Do they swap used eye shadow/lipstick?  That would make me very squeegy. 

You can, because they can be sanitized with isopropyl alcohol like they do at makeup counters, but you do not have to. Most people have details of what they will, and will not swap. 

I will not for used mascara, or lip goods. 

*VIA FAQS*

Swap FAQ

1. What is swapping? Swapping is a way for MakeupAlley participants to exchange beauty products. The swap board allows members to post beauty products and browse through the database of items available for swap.
2. What can I swap? Cosmetic and beauty products. The swapping of any prescription medications (such as acne medication: Retin-A, Differin, etc.) is PROHIBITED. We also suggest swapping only unused mascara.
3. How long will swap items stay up on the swap board? An item is kept in the swap database for three months then it is automatically removed.
4. Can I swap an item for money? No, selling items is NOT allowed on the Swap Board. This includes links to ebay or listing prices anywhere on the Swap Board.
5. What happens if I am not interested in anything on someone's swap list? If you are not interested in swapping, it is courteous to send back an email saying no thank you.
6. What happens if I receive my swap package and the goods are damaged? Email the other person and give them the opportunity to explain or correct the problem. Try to reach a compromise to rectify the situation.
7. What happens if I don't receive my end of the swap? (Swaplifting) After two weeks if you have not received your package, email the other party about it and try to remedy the situation. The other party may have forgotten, had a family or work issue, gotten sick, etc. If the situation isn't remedied to your satisfaction, leave feedback by issuing a Negative Swap Token.
8. Can I remove a token after I issue it? Yes, you can remove a token after awarding it. (click on remove in the swap token section).
9. Can I respond to a Negative Token? Yes, if someone awards you a Negative Token, you may respond to it. (click on respond in the swap token section).
10. Does MakeupAlley help resolve swap disputes? No, MakeupAlley does NOT get involved in ANY type of swap disputes (see disclaimer).
11. Can I swap with a person who lives in another country? Yes, however, this is a choice to be made by you. Please check with your local post office on the requirements of sending/receiving a package to/from another country.
12. What should I expect from swapping? In the spirit of swapping, we encourage members to be friendly, fair, honest and safe. The art of swapping is achieved when both members come away from the exchange excited about their new product. Treat others as you would want to be treated.