I use my heat cap and my steamer,Because I henna for color. I use the heat cap for about an hour and then I use my steamer for the last 30 minutes of hennaing. I get great color.
I use Yemen henna because it has a very high dye content. Here's my mix:
I make a chamomile and lavender tea and let it sit overnight to get very strong, Then I mix it with my henna and I sleep in henna. Next I rinse until water runs clean then I use a cheapie conditioner and wash, then dc, moisturize and seal.