This is not gentle; it made my scalp itchy, and the color washed out after a week. I don't have allergies or sensitive skin. The credibility of their online reviews seems questionable. The only place I could find reviews is here, and the rating isn't impressive. They have a good rating on another site, but it's unclear who those reviewers are, and I wasn't given a chance to share my opinion. There were also shipping issues, and my product took a month to arrive.
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