Skip to content

A Study on the Clinical Efficacy and Safety of 1726-nm Laser in the Treatment of Seborrheic Dermatitis: Evaluation of Skin Microbiome, Immune Response, and Skin Barrier Alterations

A Study on the Clinical Efficacy and Safety of 1726-nm Laser in the Treatment of Seborrheic Dermatitis: Evaluation of Skin Microbiome, Immune Response, and Skin Barrier Alterations

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
TCTR
Registry ID
TCTR20260212001
Enrollment
32
Registered
2026-02-12
Start date
2026-03-02
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

Seborrheic dermatitis Seborrheic dermatitis, laser, microbiome, proteomics

Interventions

Participants with facial seborrheic dermatitis will receive treatment with a 1726-nm laser, administered in three sessions at one-month intervals. Clinical evaluations will be performed at baseline an
Experimental Device,No Intervention No treatment
1726 nm laser (22 cases),Control (10 cases)

Sponsors

Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
Lead Sponsor

Eligibility

Sex/Gender
All
Age
25 Years to 50 Years

Inclusion criteria

Inclusion criteria: 1. Thai male or female participants aged 25 to 50 years. 2. Diagnosis of facial seborrheic dermatitis of moderate to severe severity, as assessed by a dermatologist using the Seborrheic Dermatitis Area and Severity Index (SEDASI). 3. Participants of Asian ethnicity (Thai).

Exclusion criteria

Exclusion criteria: 1. Pregnant women, women within 1 year postpartum, or breastfeeding women. 2. Individuals who do not provide written informed consent to participate in the study. 3. History of Cushing syndrome or Ehlers Danlos syndrome. 4. Use of antibiotic or antifungal treatments for facial seborrheic dermatitis, including oral or topical formulations or any other treatment modalities, within 1 month prior to study enrollment. 5. Use of oral isotretinoin within 1 year prior to study enrollment. 6. History of chemical peeling procedures within 1 month prior to study enrollment. 7. History of malignancy, ongoing cancer treatment, or skin cancer at the treatment site. 8. History of immunodeficiency, including HIV infection or AIDS. 9. History of keloid formation or other dermatologic conditions at the treatment site. 10. Presence of open wounds or active skin infections at the treatment site. 11. History of herpes simplex infection or current active herpes infection. 12. History of psychiatric disorders. 13. Any medical condition that, in the investigators judgment, may compromise participant safety or interfere with study participation. 14. Refusal to allow clinical photography for treatment outcome assessment. 15. Receipt of the following medications within 6 months prior to sample collection: a. Systemic antibiotics, antifungals, antivirals, or antiparasitic agents (intravenous or intramuscular). b. Systemic corticosteroids (intravenous or intramuscular). c. Cytokine therapies (intravenous or intramuscular). d. High-dose commercial probiotics in the form of tablets, capsules, lozenges, chewing gum, or powders containing probiotics as the main component (fermented foods such as yogurt or fermented milk products are permitted). 16. Use of oral antibiotics, antifungals, antivirals, or antiparasitic agents within 6 weeks prior to sample collection.

Design outcomes

Primary

MeasureTime frame
changes on the skin microbiome at the facial and lesional sites using skin swabbing before and after being treated with the 1726-nm laser baseline, 1 month after complete treatment skin swabbing,changes in global transcriptome of tape strips from seborrheic dermatitis lesion before and after being treated with the 1726-nm wavelength laser baseline, 1 month after complete treatment tape stripping,Physician assessment 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment quartile improvement scale,Safety of the 1726-nm wavelength laser in treating seborrheic dermatitis 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment Adverse event

Secondary

MeasureTime frame
Sebum level Baseline, 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment Sebumeter,Redness level Baseline, 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment Antera,Pigmentation Baseline, 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment Antera,Pores Baseline, 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment Antera,Texture of skin Baseline, 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment Antera,Melanin index Baseline, 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment Mexameter,Erythema index Baseline, 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment Mexameter,Quality of Life Baseline, 1 month after 1st treatment, 1 month after 2nd treatment, 1-,3- and 6-month after 3rd treatment Dermatology Life Quality Index (DLQI),The differences of the bacterial composition, relative abundance, and microbial diversity among lesional, non-lesional and healthy volunteer Baseline Skin swabbing for microbiomes study,The differences of the global transcriptome of tape strips from lesional and non-lesional skin of seborrheic dermatitis patients and skin of healthy patients Baseline Skin tape stripping for proteomics study

Countries

Thailand

Contacts

Public ContactWoraphong Manuskiatti

Department of Dermatology, Faculty of medicine Siriraj hospital, Mahidol university

woraphong.man@mahidol.ac.th024197000

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 10, 2026