We don't offer samples/allergy tests. You can try finding a salon that uses EcoColors Haircolor through our salon locator; to inquire whether they can perform a patch test. To find a salon in your area, go to www.ecocolors.net. Click on Salon Locator. Enter your AREA code to your phone number. Be sure your "pop up blocker" is disabled. A list of salons should pop up in a separate window. This feature is only available for US based residents.