Clinical Trials

Clinical Trials

  • DEVELOPMENT PROCESS

    A performance-driven approach

    We've honed a process to uncover and test different potent plant extracts. From ingredient research to determining optimal blending ratios, we ensure maximum efficacy. Our preclinical tests validate safety and functionality, while human clinical trials follow strict regulations and conform high standards.
Open Ben's Lab Hair Supplements bottle with tablets
CLINICAL TRIAL #1:

The Hair Supplement

Clinical trials, assessing the efficacy Ben's Lab Hair Supplements, concluded that participants who took the supplement saw significant increases in hair density and thickness compared to the control group who took a placebo.*

*A randomized, double-blinded, placebo-controlled study conducted on 88 healthy adults with mild to moderate hair damage (ages 19-60) assessing the efficacy of Ben’s Lab Hair Supplements over 6 months.

Ben's Lab Hair Supplement - Improved Hair Density Chart
  • Increased Hair Density

    Participants who took Ben's Lab Hair Supplements saw on average 680 more hair strands appear over the trial versus the control group (based on an average scalp area of 200 cm2). The results show steady growth that continues to improve over time.
Ben's Lab Hair Supplement - Improved Hair Thickness Chart
  • Visibly Thicker Hair

    By week 16 of our clinical trials, participants saw significant differences in the thickness of their hair. At the end of the 24-week trial, participants saw continued improvement while the control group experienced a decrease in hair diameter.

Supplement Efficacy Report

Seoyoon Ham, Young In Lee, In Ah Kim, Jangmi Suk, Inhee Jung, Jong-Moon Jeong, Ju Hee Lee


Recent research suggests that persimmon leaf extract (PLE) has an effect on inflammatory skin diseases. Previously, PLE is revealed to inhibit not only nitric oxide production but also inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression levels in mouse macrophages in vitro. Moreover, it significantly reduced IL-6 production and 5α-reductase over-expression in human follicle dermal papilla cells (HFDPCs). This study aimed to determine whether the PLE-containing BLH308 complex improves hair growth in clinical trials.


A total of 88 participants were recruited, and were instructed to orally take BLH308 or the placebo twice a day for 24 weeks. The mean age of the test group was 38.52 ± 7.98 years and that of placebo group was 38.98 ± 8.80 years. The study was conducted for 24 weeks, and hair density, thickness, and gloss were evaluated. All participants completed a satisfaction survey questionnaire.


The test group showed significantly increased hair density and hair diameter at week 24 compared with the placebo group (p = 0.0015 andp = 0.0001, respectively). Although not statistically significant, the degree of gloss also showed higher improvement in the test group compared to the placebo group.


Our data demonstrated that oral consumption of the BLH308 complex containing PLE significantly increased hair density and thickness compared to the placebo group, showing its possible role in promoting hair growth.


Wiley Online Library Logo

Wiley Article

Efficacy and safety of persimmon leaf formulatedwith green tea and sophora fruit extracts (BLH308) on hair growth

Open Ben's Lab Scalp Serum bottle
CLINICAL TRIAL #2:

The Scalp Serum

Clinical trials, assessing the efficacy Ben's Lab Scalp Serum, concluded that participants who applied the serum daily experienced significant improvements in hair shedding and scalp inflammation.

*Third-party, single-arm study conducted on 21 healthy adults ages 20-60 assessing the efficacy of Ben’s Lab Scalp Serum over 30 days.

Ben's Lab Scalp Serum - Reduced Hair Shedding Chart
  • Reduced Daily Shedding

    Our clinical trial participants saw a 72% reduction in hair fallout after consistently using Ben's Lab Scalp Serum for four weeks. The typical hair fallout was around 50 strands per day before participants began treatment. By the end of the 4-week trial, that number was down to 14 hair strands on average.

Scalp Serum Research Results Report

Conducted in July 2023 by the P&K Skin Research Center in South Korea.