The Henna Experiment: Dyeing My Hair with Henna + NUMI Organic Rooibos Tea

Special thanks to Numi Organic Tea for sponsoring this post. All opinions (and results) are my own. The last time I dyed my hair with henna, I was intrigued by the instruction booklet's suggestion to use hot tea instead of water to alter the final color: black tea to reduce the red undertone, red tea…