The TRIOXIDIL® Clinical Study: An Overview
Who ran it, who took part, what they used and for how long — the 2019 study behind the TRIOXIDIL® results, explained in plain English.
FOLIGAIN® Editorial Team · 8 min read · Updated 2026-09-30
Medical facts and treatment details have not been independently medically reviewed.
Why this study matters
When you read that a product is “clinically tested,” it's fair to ask: tested by whom, on whom, and for how long? This chapter answers those questions for TRIOXIDIL®, so you can judge the results on the following pages for yourself.
The study looked at the cosmetic performance of the FOLIGAIN® TRIOXIDIL® regimen for men and women noticing visible thinning or early signs of hair loss. In other words, it measured how hair looked and behaved — volume, density, breakage, shine, softness and scalp condition.
The study at a glance
Here are the key facts, taken from FOLIGAIN®'s published clinical summary.
| Detail | What it was |
|---|---|
| Research organization | Princeton Consumer Research Corp |
| Year | 2019 |
| Participants | 60 adults (30 men, 30 women) |
| Ages | 18 to 75 |
| Starting concern | Visible thinning, reduced density or brittle hair |
| Duration | 120 days of continuous use |
| Products used | TRIOXIDIL® Shampoo, Conditioner and Topical Treatment |
What participants actually did
Participants washed with TRIOXIDIL® Shampoo and Conditioner three to five times per week and applied the TRIOXIDIL® Topical Treatment once daily, following the standard directions.
That's worth noting: the results reflect the full three-step routine used consistently for four months, not a single product used occasionally. If you want results like these, consistency is the part you control.
What was measured
The study tracked visible changes in:
- Hair volume and thickness
- Density and visible hair count
- Breakage and hairs shed during brushing
- Shine and softness
- Scalp condition
- The overall look of thinning areas
Source and note
Source: FOLIGAIN® TRIOXIDIL® clinical data (foligain.com/pages/foligain-trioxidil-clinical-data). Study conducted by Princeton Consumer Research Corp, 2019. These are cosmetic results measuring the visible look of hair and scalp; TRIOXIDIL® products are not intended to diagnose, treat, cure or prevent any disease. Individual results vary.
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Images are matched to the topic for education; always confirm directions and claims on the exact product label.
Frequently asked questions
Were both men and women included?
Yes — an even split of 30 men and 30 women, ages 18 to 75.
How long did the study last?
120 days, or about four months, of continuous use.
Which products were tested?
The complete TRIOXIDIL® regimen: Shampoo, Conditioner and Topical Treatment used together.
This content is for educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure or prevent any disease. Speak with a qualified healthcare professional about your individual situation.
Individual results vary. Hair-growth products are used consistently over months, and outcomes depend on the cause and stage of hair loss.
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