Hair Removal: Intense Pulsed Light Versus Diode Laser

NCT ID: NCT06179186

Last Updated: 2025-08-27

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

NA

Total Enrollment

48 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-11-30

Study Completion Date

2024-11-30

Brief Summary

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The goal of this clinical trial is to compare the effectiveness of two hair removal techniques: Intense Pulsed Light (IPL) and Diode Laser in woman underarm. .

Main Questions:

* Determine the thread count in a 4cm² quadrant in the central axillary region before each session, 4-6 weeks after the last session and at follow-up 30 weeks after the last session;
* Measure the thickness of the hair before each session, 4-6 weeks after the last session and at follow-up 6 months after the last session;
* Compare the level of pain during procedures;
* Evaluate the volunteer's level of satisfaction after the end of the sessions programmed by the study;
* Evaluate quality of life and self-image before and after the end of the sessions programmed by the study;
* Evaluate the maintenance of results 6 months after the last procedure performed.

Researchers will compare IPL and Diode laser to see if hair removal is similar at short and long time course.

The IPL treatment will be applied to one axilla. The 800nm Diode Laser treatment will be applied to the other axilla. Treatment allocation will be randomized for each participant. Participants will undergo monthly sessions for four months, totaling four treatments. Follow-up assessments will occur 30 days and 6 months after the final session.

Detailed Description

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This is a randomized controlled trial of hair removal in axilla for women, being intense pulsed light compared to diode laser.

The session frequency will be once a month for 4 months, totaling 4 treatments. There will be a follow-up at 30 days and 6 months after the end of the treatment.

After the evaluations and photographs, the armpits will be cleaned with 0.5% alcoholic chlorhexidine and will be shaved with a disposable razor blade. Neutral water-based gel will be applied to the region to receive the treatment. Patients will be instructed not to perform any trichotomy procedures in the region during the research period.

The treatment technique will be punctual where the applicator will be kept in full contact with the skin at 90° and moved to the next point after deposition of energy over the entire treatment area until the defined energy is delivered. The applicator tip will be cooled as much as the equipment allows.

Conditions

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Hair Removal

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Participants are assigned two groups in parallel for the duration of the study
Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors
participants will receive both treatments in right and left axilla, and they won´t know which treatment will be performed at each side.

The outcome assessor won´t know which treatment was performed at the axilla.

Study Groups

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Intense Pulsed Light

The hair from axilla of one side of the body will be removed with 4 sessions of Intense Pulsed Light

Group Type EXPERIMENTAL

Intense Pulsed Light

Intervention Type DEVICE

The axilla will be treated with intense pulsed light, being right or left, depending upon randomization.

Diode Laser

Intervention Type DEVICE

The axilla will be treated with diode laser, being right or left, depending upon randomization.

Diode laser

The hair from axilla of one side of the body will be removed with 4 sessions of Diode Laser

Group Type EXPERIMENTAL

Intense Pulsed Light

Intervention Type DEVICE

The axilla will be treated with intense pulsed light, being right or left, depending upon randomization.

Diode Laser

Intervention Type DEVICE

The axilla will be treated with diode laser, being right or left, depending upon randomization.

Interventions

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Intense Pulsed Light

The axilla will be treated with intense pulsed light, being right or left, depending upon randomization.

Intervention Type DEVICE

Diode Laser

The axilla will be treated with diode laser, being right or left, depending upon randomization.

Intervention Type DEVICE

Other Intervention Names

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Randomized Randomized

Eligibility Criteria

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Inclusion Criteria

* Female patients,
* aged 18 and older,
* with a complaint of hair in the axillary region,
* Fitzpatrick skin phototype I to IV,
* presenting dark hair

Exclusion Criteria

* Patients who have used medications that alter hair production,
* Patients who have used medications that are photosensitizing,
* Patients who have used isotretinoin or vitamin A-synthesized acids, antibiotics such as tetracycline,
* Patients using anticoagulant
* Patients with vitiligo or epilepsy,
* Pregnant or lactating individuals,
* those with active herpes,
* Patient with history of tumors,
* Patient with axillary scarring (hyper or hypotrophic),
* Patient who have used another method of hair removal involving complete hair removal by pulling with a minimum period of 30 days from the date of the initial assessment, or have used another laser hair removal method in the treatment area,
* Immunocompromised patients,
* Patients with sun-sensitive skin with inflammation,
* Individuals with psoriasis,
* Patients with tattoos on the application site,
* Patients who have undergone ovary removal or have reached menopause
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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University of Nove de Julho

OTHER

Sponsor Role lead

Responsible Party

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Christiane Pavani

Clinical Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Christiane Pavani, PhD

Role: STUDY_DIRECTOR

University of Nove de Julho

Locations

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Universidade Nove de Julho

São Paulo, São Paulo, Brazil

Site Status

Ambulatório Universidade Nove de Julho

São Paulo, São Paulo, Brazil

Site Status

Countries

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Brazil

Other Identifiers

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RTBB

Identifier Type: -

Identifier Source: org_study_id

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