This one is another one you can refer friends to. You only need 5 to get a $5 store credit.
Get a free store credit or free products from Simply Earth. Join with this link and start referring your friends. The more you refer the better the prize.
5 Friends – Free $5 Store Credit
10 Friends – 2 Free Products
25 Friends – 6 Free Essential Oils
50 Friends – 1 Year Free of Oils