How I tested it
I took it exactly as directed — four capsules a day with a meal — for a full twelve weeks, and I didn't change anything else about my hair routine during that window so I could actually tell what was doing the work. I took the same photo, same light, every Sunday.
For the first eight weeks, honestly, nothing. That's the part the reviews don't prepare you for, and it's where most people quit. Somewhere around week ten the shower drain got noticeably less dramatic, and by week twelve the new growth at my temples had filled in enough to notice in the mirror.
How we review: I buy what I test with my own money and take no payment from brands. This is personal experience, not medical advice — check with your clinician before starting any supplement.