Investigating effects of laser hair removal in people from different ethnic groups

Aspects of diode laser (805 nm) hair removal safety in people of various ethnicities

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN10288390

Enrollment

500

Registered

2018-11-27

Start date

2016-01-30

Completion date

Unknown

Last updated

2023-01-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Laser treatment of excess hair growth Skin and Connective Tissue Diseases

Interventions

During initial consultations, according to the study protocol and to ensure patients’ safety, investigators assess skin types using the Fitzpatrick Scale Quiz. The Fitzpatrick scale is defined as a cl

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Aged 20-40 years 2. Undergoing laser hair reduction treatment

Exclusion criteria

Exclusion criteria: 1. Any previous laser or intense pulsed light (IPL) treatments in the study area 2. Cancer 3. Use of hormonal drugs, photosensitizing drugs or antibiotics 4. Use of cosmetics containing retinol, vitamins A, E, or C, or fruit acids 5. Intake of herbs that can be photosensitizing 6. Suntan 7. Chemical or mechanical depilation or hair bleaching during previous 6 weeks 8. Irritated skin, dermatosis of various etiology, livedo reticularis or photodermatitis 9. Epilepsy 10. Pregnancy and breastfeeding 11. Isotretinoin use within the past year 12. History of photosensitivity 13. History of hypertrophic scars and keloids

Design outcomes

Primary

Measure	Time frame
1. Objective measurement of hair loss percentage in treatment area assessed by taking photographs with zoom x20 of a 1-cm2 area, 4 cm lower from the middle distance between iliac spines. The number of hairs is counted before the first treatment and 6 weeks after the last treatment.	—

Secondary

Measure	Time frame
1. Subjective assessment of hair loss percentage by participant at 6 weeks after the last treatment 2. Satisfaction level of participant on a 5-point scale 3. Side effects (skin hyperpigmentation, skin redness, skin irritation, skin hypersensitivity, skin burns) assessed before and immediately after each treatment 4. Adverse events (discomfort, damage to the natural skin texture, scarring, excessive swelling, blisters, bruising) assessed before and immediately after each treatment	—

Measure

Time frame

1. Subjective assessment of hair loss percentage by participant at 6 weeks after the last treatment 2. Satisfaction level of participant on a 5-point scale 3. Side effects (skin hyperpigmentation, skin redness, skin irritation, skin hypersensitivity, skin burns) assessed before and immediately after each treatment 4. Adverse events (discomfort, damage to the natural skin texture, scarring, excessive swelling, blisters, bruising) assessed before and immediately after each treatment

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Countries

England, Poland, United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026