Rosemary Water Is Beloved For Healthy, Lush Hair — Here's A DIY Rinse To Try 

To level up your hair care routine, we believe rinses reign supreme. The primary reason we hold them so dear: They're incredibly easy to whip up whenever you want to give your tresses extra TLC. No matter which rinse you choose (apple cider vinegar! Rice water! Green tea!), the treatment will coat your hair in nutrients and practically zap the strands back to life—a total win, especially when the summer heat crisps your ends.

Before diving into DIY, let's address what you're probably wondering: What does rosemary do for hair? 

Not only does the plant have a long history of use in herbal medicine (it was highly valued in Egypt, Greece, and Rome for its beauty benefits), but research today also presents promise. A 2015 randomized comparative trial found that rosemary essential oil was just as effective1 as minoxidil (the active ingredient in brands like Rogaine) for reversing hair loss caused by androgens—also known as male- or female-pattern baldness. Of course, these participants diluted the solution in a carrier oil base (you should never apply potent essential oils directly onto the scalp).

That's not to say rosemary works for everyone; holistic board-certified dermatologist Cybele Fishman, M.D., once told mbg that while she has not found it effective for hair loss, "it is an impressive antifungal." Plus, rosemary is brimming with polyphenols, like carnosol, carnosic acid, and rosmarinic acid2. Considering these antioxidants can help neutralize free radical damage on the scalp and hair, the rinse can help strengthen the strands you have and keep them vibrant and lush.

When you're ready to use the rinse, measure out about ¼ cup of the liquid into a shower-safe container or squeeze bottle for more dexterity. "Unlike rice water, you're going to use this as a last-step rinse," says Niomi. (You would typically use a rice water rinse after shampooing, pre-conditioner; rosemary water is more like a tea rinse, as you want those antioxidants to linger on the hair shaft).