Independently tested. Clinically proven.
Regrowz was put through a rigorous independent trial at Princeton Consumer Research — a global leader in clinical product testing. Here's exactly what they measured, and what they found.
The numbers that matter.
of subjects saw improved coverage & reduced loss
reduction in hair loss (group two)
side effects or adverse reactions reported
months, start to finish
Groups one and two, measured against a placebo group over three months. Individual results vary.
How the trial worked.
Three groups. Three months. Neither the participants nor the examiner knew who received what — the gold standard for removing bias.
Group One
Restoration Serum plus a natural remedy, applied over three months.
Group Two
Scalp Stimulator plus Restoration Serum, applied over three months.
Group Three
A placebo, identical in appearance — the control everything was measured against.
Every participant was assessed on day one and again at the end of months one, two and three. A qualified examiner used the Severity of Alopecia Tool (SALT) to measure hair coverage and loss, supported by standardised photography and self-perception questionnaires.
What they found.
Over three months, the difference between the active groups and the placebo was clear — and measurable.
- 100% of subjects in groups one and two showed improved hair coverage and reduced hair loss.
- 3.66% decrease in coverage for the placebo group over the same period.
- High statistical difference vs. placebo at every assessed time point.
- 44.9% reduction in hair loss recorded in group two.
- 0 side effects or adverse reactions, thanks to all-natural ingredients.
Real results, without the trade-offs.
Most hair-loss treatments ask you to choose between results and peace of mind. Our trial showed you don't have to — natural ingredients, measurable change, and not a single adverse reaction reported.
Ready to put the science to work?
Take our 60-second hair assessment and we'll match you with the right routine.