June 28, 2021 123rf If you've spent any amount of time on TikTok, you've probably scrolled past a video or two about hair care and hairstyling from the side of the app affectionately called HairTok. Of the many different inexpensive yet seemingly effective hair hacks HairTok has heralded, rice water has pretty much gained a cult status for its apparent ability to reduce hair loss by preventing hair breakage. Other hair loss reversal methods include using onion juice as a hair mask, or exfoliating the scalp by adding sugar or salt to shampoo to create a DIY scrub. They sound good and all, but ...