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Clinical Trial

The EFB beauté® products are the only machines on the market able to treat white and blond hair: a worldwide patent has been registered with the World Intellectual Property Organization in 2005 and published in 2007.
In order to prove the performance of this revolutionary development, EFB decided to carry out a clinical trial in the French laboratory DERMSCAN (accredited by the French Ministry of Health).

Dermscan laboratory

Trial Conditions

 

Evaluation of the performance of the photoepilation process based on the emission of light flashes.

Panel
The trial was carried out on 14 healthy volunteers, aged from 23 to 76 (average age: 50 years old), with white or blond body hair. All of the volunteers corresponded to precise inclusion and exclusion criteria.

Imagine lots of people
Video_microscope

Impact on the density of hair
Measurement principle
An identified zone was observed using a HIROX® high-definition video-microscope combined with a computerised image acquisition system. For each image taken, the hairs present on the zone were counted using the software Photoshop CS3.

Subjective Assessment
On completion of the trial, the volunteers completed a subjective evaluation survey in order to assess the efficiency and security of the process. These criteria ensure a good indication of the evaluation of the process over time.

Methodology of the trial

 

- Analysis of the varying density of dark hair (brown or chestnut) using the acquisition of images with the Hirox® videomicroscope and counting hairs using the software Photoshop® CS3.
- Analyse of the responses given by the volunteers to the subjective evaluation survey.

Methodology of the trial

Performance on dark hair (brown or chestnut)
After just 4 sessions of photoepilation, the density of dark hairs has decreased by 75% (p=0,023).

Performance on dack hair

Performance on fair hair (white or blonde)
After just 4 sessions of photoepilation, the density of dark hairs has decreased by 36% (p=0,012) with more precisely a reduction of 51% of white hair (n=7) and of 27% of blond hair (n=7) after the first session alone.

Performance on fair hair

White Hair

Results on fair hair

Hirox® images of the zone assessed after 4 sessions of photoepilation.

White hair - Before and After

Subjective Assessment
71% of volunteers gave a mark of ≥5 on a scale of 0 to 10.
50% of volunteers would be willing to use the technique on a larger zone.
43% of volunteers observed the absence unpleasant sensations during the sessions.

Subjective assessment

Conclusion

 

Under the conditions of this trial, the photoepilation process:
- reduced hair density significantly on dark hair (-75 % after 4 sessions) and on fair hair (-51% of white hair and -27% of blond hair after one session).
- was appreciated by the volunteers for its performance (71%) and the absence of unpleasant sensations during the treatment sessions (43%).

50% of volunteers would be willing to use the technique on a larger zone.