Tea Tree Aromatic Oil by Paul Mitchell is a single-ingredient essential oil — 100% Melaleuca alternifolia (tea tree) leaf oil — sold as a multi-use aromatherapy oil rather than a stand-alone moisturizer, even though it's sometimes filed under body-care. Paul Mitchell markets it as a small addition to an existing routine: a drop goes on a cotton ball for spot use on skin, a few drops go into a diffuser or onto a warm towel for aromatherapy, and a small amount blends into bathwater, a manicure/pedicure soak, or a carrier oil/body moisturizer for massage.
Because it's an undiluted essential oil rather than a formulated lotion, it isn't meant to be applied directly to large areas of skin on its own — the brand's own directions call for blending or diluting it in nearly every use case. It suits people who already like tea tree's scent and want a versatile add-in for massage oil, bathwater, or a diffuser, rather than someone looking for a ready-to-use daily moisturizer.