Be careful about putting 100% tea tree on your scalp. I know that in one of Ted's remedies he speaks about putting pure 100% tea tree oil in scalp. I caution you about this. I tried this, (put a small puddle of tea tree and rubbed through entire scalp, to get rid of dandruff, and an itchiness, and my scalp, months later is still very red and inflamed, sore and burnt. (and am losing alot of hair). I do not want this to happen to any one else. So, please, please, make sure you only use tea tree if it is mixed with a carrier oil like olive oil so you do not burn your scalp. (maybe some people can put the 100% tea tree onto their scalp, but, I am still suffering the aftermath). So spot test first!!!