What Is Hair Growth Spray? Plus, How To Actually Get Longer Locks

It's all in the name: A hair growth spray is simply a spray that stimulates hair growth. However, it's not entirely clear what ingredients constitute a hair growth spray. 

When reviewing the hashtag on TikTok, I noticed most creators using this term are referring to a timeless remedy: rosemary oil for hair growth. Pop that oil into a bottle, dilute it with some water, then it becomes the buzzy hair growth spray. 

​​Rosemary has a long history of use in herbal medicine (it was highly valued in Egypt, Greece, and Rome for its beauty benefits). 

Beyond its historical use, rosemary oil has been clinically studied as well, with promising results. See, rosemary is a fabulous herb for stimulating circulation on the scalp—which, in turn, has the potential to spur hair growth.

In fact, a 2015 randomized comparative trial found that rosemary essential oil was just as effective1 as minoxidil (the active ingredient in many commercial hair growth products) for reversing hair loss caused by androgens—also known as male- or female-pattern baldness—after six months. Hence, why you may see baby hairs popping up if you commit to using rosemary oil or rosemary spray on your scalp. 

You can DIY this spray, or you can opt for a pre-formulated hair growth serum with rosemary oil in it (like this one I previously reviewed).