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Comparison of Efficacy, Safety and Tolerability of Two Different 810 nm Diode Lasers for Hair Reduction

This study has been completed.
Information provided by (Responsible Party):
Christopher Zachary, University of California, Irvine Identifier:
First received: September 22, 2010
Last updated: January 7, 2016
Last verified: October 2015
The purpose of this research study is to compare two different 810 diode laser systems (Soprano XL (SHR Mode)and Light Sheer Duet) for laser hair removal. The goal is to determine if each laser system is effective at reducing the amount of hair on the lower legs or the axilla (arm pit). Another goal is determine the subject's perspective on the treatment including tolerability and effectiveness.

Condition Intervention Phase
Hypertrichosis Device: Soprano/SHR Device: LightSheer Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double Blind (Participant, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Side-by-Side Comparison of 810 nm Diode Laser Technology With Low Fluence-High Repetition Rate vs Low Fluence-Vacuum Assist - A Split - Extremity Efficacy , Safety and Tolerability Study

Further study details as provided by Christopher Zachary, University of California, Irvine:

Primary Outcome Measures:
  • Change in Hair Growth [ Time Frame: 1 month, 6 month, 12 month ]
    % reduction from baseline hair count at time points 1 month, 6 months and 12 months [following last (5th laser) treatment]

Secondary Outcome Measures:
  • Pain Rating Scale [ Time Frame: 12 months ]
    Pain during each treatment was measured subjectively by patients on a 0-10 visual analogue scale (0=no pain, 10=unbearable pain).

Enrollment: 20
Study Start Date: September 2010
Study Completion Date: September 2013
Primary Completion Date: September 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Soprano/SHR
Alma Soprano/SHR 810 nm Diode Laser
Device: Soprano/SHR
For the Soprano, the constant motion technique will be used with a fluence ranging between 6 J/cm2 and 10 J/cm2, 10 Hz, 20 ms pulse duration. The constant motion technique involves treating 100 cm2 areas with multiple passes until reaching the cumulative energy dose of 8 kJ. Thus, the hand piece is kept in constant motion to deliver continuous low fluence that will build up energy over time.
Other Name: Soprano/SHR laser
Active Comparator: LightSheer
LightSheer Duet 810 nm diode laser
Device: LightSheer
The LightSheer/Duet will be used with conventional single pass (stamping) of the handpiece using settings of single pulse fluence of up to 14 J/cm2 and low vacuum settings.
Other Name: Duet LightSheer

Detailed Description:

This side-by-side split body, blinded, randomized single-center study is comparing two different 810 nm diode laser technologies for the purpose of permanent hair reduction to determine the effectiveness and subject's tolerance for hair reduction. Twenty volunteers will be enrolled into this study. Subjects will receive a total of 5 treatments of either axilla or lower legs. 10 patients will have both axilla treated while the other 10 subjects will have the lower legs treated. Placement to the axilla treatment group vs. the lower leg treatment group is random.

Treatment areas will be randomized to receive Soprano SHR treatment or Light Sheer/Duet treatment. One extremity (example: right axilla) will receive Soprano SHR treatment and the contra-lateral extremity (example: left axilla) will receive Duet treatment. The treatments will occur every 6 - 8 weeks and then there will be follow up visits at 1 month, 6 months, and 12 months after the last treatment.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  1. Subjects must be at least 18 years of age.
  2. Subjects must be in reasonably good health as defined by the Investigator.
  3. Subject agrees to avoid tanning during their participation in this trial.
  4. Subject has Fitzpatrick skin types I-V and dark brown hair.
  5. Subjects must agree to avoid shaving legs less than 72 hours prior to a study visit.
  6. Subjects have indicated willingness to participate in the study by signing an informed consent document.

Exclusion Criteria:

  1. Subject is pregnant, lactating, or planning to get pregnant within the study period.
  2. Subject is unwilling to use birth control during the study period if of child bearing age.
  3. Subject has a known history of photosensitivity or use of medication with photosensitizing properties.
  4. Subject has skin disease on exam at screening.
  5. Subject has history or evidence of any chronic or reoccurring skin disease or disorder(e.g., psoriasis, Netherton syndrome, etc.) affecting the treatment area.
  6. Subject has a history of keloid or hypertrophic scar formation.
  7. Subject has a tattoo in the treatment area.
  8. Subject has been tanning within the past 30 days.
  9. Subject has history of confounding cancerous or pre-cancerous skin lesions in the treatment area.
  10. Subject has used prohibited therapies (electrolysis, threading, waxing, depilatory), prohibited oral prescription medications (isotretinoin, steroids), or prohibited topical meds (steroids) on the treatment area within 30 days prior to enrollment.
  11. Subject is unwilling to discontinue use of above listed prohibitive therapies for the duration of treatment.
  12. Subject has a history of laser hair removal in the treatment area.
  13. Subject has participated in any clinical trial involving an investigational drug or cosmetic product or procedure within the past 30 days.
  14. The investigator feels that for any reason the subject is not eligible to participate in the study.

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01212172

United States, California
Department of Dermatology Clinical Research
Irvine, California, United States, 92697
Sponsors and Collaborators
University of California, Irvine
Principal Investigator: Christopher B Zachary, MBBS, FRCP University of California, Irvine
  More Information

Additional Information:
Responsible Party: Christopher Zachary, MBBS, FRCP, University of California, Irvine Identifier: NCT01212172     History of Changes
Other Study ID Numbers: 2010-7704
Study First Received: September 22, 2010
Results First Received: December 4, 2014
Last Updated: January 7, 2016

Keywords provided by Christopher Zachary, University of California, Irvine:
Hair removal
Diode laser

Additional relevant MeSH terms:
Hair Diseases
Skin Diseases processed this record on June 23, 2017