It’s an ingredient that will give you the proper scrub you need—leaving you feeling fresh and rejuvenated—without aggravating your skin barrier. Here, we’ve rounded up the best tea tree shampoos for the healthiest head of hair. One study even found that using a shampoo that contained tea tree oil was an effective way to improve mild to moderate dandruff2; specifically, participants who used the oil for four weeks had a 41% improvement in itchy, scaly symptoms. It’s incredibly effective at dissolving and removing oil and debris—which means noticeable smoothness and shine for your strands. Not to mention, those anti-inflammatory properties we noted above can help calm any irritation from buildup. A tea tree shampoo does double duty: Simply spend some extra time working it in with your fingertips whenever you lather up. Anti-Dandruff Itch & Flake Shampoo, Avalon Organics ($13.89) Squeaky Clarifying Cleanser, Uncle Funky’s Daughter ($12.99) African Black Soap & Tea Tree Oil 2-In-1 Shampoo & Conditioner, SheaMoisture ($6.99) Sulfate-Free Tea Tree Oil & Vetiver Shampoo, Love Beauty And Planet ($7.89) Mint Leaves & Tea Tree Shampoo, Earth’s Nectar ($23.50) Tea Tree Scalp Relief Soothing Shampoo, Yes To ($7.99) Daily Strengthening Shampoo, Brickell ($20) Hydration Shampoo, Pattern Beauty ($20) Tea Tree Shampoo, Faith in Nature ($6.99) Oblivion Clarifying Shampoo, R+Co ($27) Scalp Revival Charcoal + Coconut Oil Micro-Exfoliating Shampoo, Briogeo ($42)