This review looked at 24 studies on hyped hair loss ingredients like Baicapil and found they show promise when combined with other ingredients—but with a major asterisk: most studies were small, poorly designed, didn't compare against proven treatments like minoxidil, and often didn't even specify what type of hair loss they were treating. The takeaway: these ingredients might work as add-ons if you can't tolerate standard therapies, but the evidence isn't strong enough to rely on them alone.

Researchers reviewed scientific literature from PubMed, Google Scholar, and Google to compile what we actually know about trendy topical hair ingredients. They found and analyzed 24 relevant articles and technical documents.

Funding not disclosed in abstract