We do not offer free strand test kits. To have your hair swatch colored for free, send a swatch of your hair and a self addressed stamped envelope, so we may mail the colored swatch back to you. Be sure to include an email address in case we have questions and also request the colors you would like us to try. Mail the swatch and the self addressed stamped envelope to Ecocolors Salon Swatch test Dept 1860 N. Rock Springs Rd #101 Atlanta GA 30324