Over the last few years, I have come across many product testing panels & survey sites for beauty products from magazines and food from manufacturers like General Mills among other things.
Please keep in mind that many of these are panels that you apply for. You may or may not be chosen. If chosen, they will send you products for you to try and then you may need to complete a survey after the test or possibly write a review.
I have had luck with several of these panels. Your experience may be different, so be sure to come back and share. Keep in mind that each of these requires you to sign up, which will be time consuming. Just bookmark the page and come back at your leisure. Have fun!
Online Surveys & Rewards
Cash 4 Offers
E-poll Survey Panel
Global Survey Group
Global Test Market
Honest Insite Survey Panel
Ibotta (Mobile App)
Kidzeyes (Paid surveys for kids 6-12)
Only Cash Surveys
Paid Surveys at Home
Shadow Shopper (Mystery shopping)