With winter fast approaching, its worth remembering that if you are using henna, the temperature needs to be warm for the best dye release. Too cold and you won’t get the results you really want to achieve. 15 degrees centigrade to 21 degrees centigrade is the ideal temperature. Long release hennas such as Jamila powder can take 48 hours or more. When mixing henna this winter, keep this in mind so you continue to get great stains from your henna….