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Ozonated Oil Emulsion for Seborrhea in Women (OOSE)

20 de outubro de 2026 atualizado por: Chadi Khatib

A Randomized, Double-Blind, Placebo-Controlled Trial of an Ozonated Oil-Based Emulsion With Biotin for Seborrhea Management: Chemical Characterization, Stability Profiling, and Clinical Efficacy in Adult Women

This study evaluates a new ozonated oil-based hair cream for women with oily scalp (seborrhea). The cream contains natural oils (moringa, wheat germ, olive, and chili extract) treated with ozone, plus biotin (vitamin B7).

66 women aged 18-40 years participated in this 6-week study. Participants were randomly assigned to receive either:

  • The active cream (ozonated oils + biotin), OR
  • A placebo cream (without active ingredients)

Neither the participants nor the researchers knew which cream was given (double-blind). Participants applied the cream to their scalp every evening for 6 weeks.

The main goal was to measure changes in scalp oil (sebum) production at Week 6 compared to baseline. Other outcomes included hair manageability, shine, and scalp comfort.

Results showed that the active cream significantly reduced scalp oil by 28% compared to 10% in the placebo group. The cream was well-tolerated with only mild side effects (scalp irritation in 6% of active group).

This study suggests that ozonated oil emulsion may be a safe and effective cosmetic option for managing oily scalp in women.

Visão geral do estudo

Status

Concluído

Condições

Intervenção / Tratamento

Descrição detalhada

BACKGROUND:

Seborrheic scalp conditions are common among adults, causing excessive oiliness and social discomfort. Current treatments use synthetic surfactants that may damage hair and scalp barrier. Ozonated oils represent a "green chemistry" approach that modifies natural oils to create bioactive compounds with antimicrobial and sebum-regulating properties.

INTERVENTION:

The study product is a low oil-in-water emulsion containing:

  • Ozonated oil blend (7%): Moringa oleifera, Triticum vulgare, Olea europaea, Capsicum annuum oleoresin
  • Biotin (0.1%): Vitamin B7 for keratin synthesis
  • Placebo: Identical base without ozonated oils and biotin

STUDY DESIGN:

Single-center, randomized, double-blind, placebo-controlled parallel-group trial conducted at the Research Unit of the Syrian Scientific Society for Medicinal Herbs (SHAMNA), Aleppo, Syria, between April and May 2024 (screening and enrollment: April 6 - May 18, 2024), under institutional authorization from Manara University Faculty of Pharmacy.

PARTICIPANTS:

66 adult women (18-40 years) with objective sebum ≥200 μg/cm² and self-reported daily hair washing due to oily scalp. Female-only enrollment to minimize sex-based variability in sebum production.

PRIMARY ENDPOINT:

Percent change from baseline in sebumeter-measured scalp sebum content at Week 6.

SECONDARY ENDPOINTS:

Hair manageability, shine, scalp comfort (0-10 scales), and Investigator Global Assessment.

STATISTICAL ANALYSIS:

The primary endpoint (percent change from baseline in Week 6 sebum) was analyzed by ANCOVA with baseline sebum as covariate, following FDA guidance on covariate adjustment. Missing Week 6 data were handled by Multiple Imputation by Chained Equations (MICE; m = 30). Continuous secondary endpoints (hair manageability, hair shine, scalp comfort) were analyzed by baseline-adjusted ANCOVA on observed cases at Week 6, with treatment group as a fixed factor and the corresponding baseline score as a continuous covariate. Binary IGA success was analyzed by logistic regression in the per-protocol population. Multiplicity was controlled by the Hochberg procedure. Seven pre-specified sensitivity analyses (observed-case, per-protocol, MNAR delta-adjustment, worst-case, extreme worst-case, best-case, and multi-covariate ANCOVA) confirmed robustness.

KEY FINDINGS:

Active treatment reduced scalp sebum by 28.5% vs. 9.8% with placebo (adjusted between-group difference: -19.0%, 95% CI: -22.2 to -15.8, p<0.0001, ITT with MICE), exceeding the pre-specified 15% clinically meaningful threshold. All secondary endpoints favored active treatment after multiplicity adjustment.

LIMITATIONS:

Single-center, female-only, 6-week duration. Generalizability to males and long-term safety require further study.

Tipo de estudo

Intervencional

Inscrição (Real)

66

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

      • Aleppo, Síria
        • Research Unit, Syrian Scientific Society for Medicinal Herbs, Aleppo

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos a 40 anos (Adulto)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Fêmea

Descrição

Inclusion Criteria:

  • Female sex (biological), ages 18-40 years.
  • Objective sebum measurement ≥200 µg/cm² at screening (Sebumeter SM 815).
  • Self-reported daily or near-daily hair washing due to oily scalp.
  • Willing to abstain from other hair treatments for 2-week washout and study duration.
  • Signed informed consent.

Exclusion Criteria:

  • Active scalp dermatoses (psoriasis, atopic dermatitis, tinea capitis) requiring medical treatment
  • Known hypersensitivity to study ingredients or fragrance components
  • Pregnancy, lactation, or planned pregnancy during study period
  • Systemic medications affecting sebum production (isotretinoin, hormonal contraceptives initiated within 3 months, anti-androgens)
  • Participation in other cosmetic or pharmaceutical trials within 30 days

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Quadruplicar

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Ozonated oil-based cosmetic emulsion

Low oil-in-water emulsion containing ozonated natural oils (Moringa oleifera, Triticum vulgare, Olea europaea, Capsicum annuum oleoresin) plus biotin 0.1%. Applied 5g to scalp evening, overnight, rinsed morning for 6 weeks.

Low oil-in-water emulsion containing ozonated natural oils (Moringa oleifera 3%, Triticum vulgare 1.95%, Olea europaea 2%, Capsicum annuum oleoresin 0.05%) plus biotin 0.1%. Applied 5g to scalp evening, overnight, rinsed morning for 6 weeks.

Outros nomes:
  • Ozonated Oil Emulsion
Outro: Matched vehicle control

Identical base formulation with caprylic/capric triglyceride and isopropyl palmitate to match total oil phase (8%), rheology, and cosmetic elegance. Same application protocol: 5g evening, overnight, 6 weeks.

Identical base formulation with caprylic/capric triglyceride 6% and isopropyl palmitate 2% to match total oil phase (8%), rheology, and cosmetic elegance. Same application protocol: 5g evening, overnight, 6 weeks.

Outros nomes:
  • Controle de veículo

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Percent change from baseline in scalp sebum content measured by Sebumeter
Prazo: Baseline (Day 0) and Week 6

Objective measurement of scalp sebum production using Sebumeter SM 815 (Courage+Khazaka, Germany). Three standardized sites (vertex, left and right parietal regions) measured and averaged. Negative values indicate sebum reduction. Pre-specified clinically meaningful threshold: 15% absolute reduction.

Baseline (Day 0) and Week 6

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Hair shine score (investigator-rated)
Prazo: Baseline, Week 2, Week 4, Week 6

Standardized 10-point scale via standardized lighting and photography. Higher scores indicate improved shine.

Baseline, Week 2, Week 4, Week 6
Scalp comfort score (participant-reported)
Prazo: Baseline, Week 2, Week 4, Week 6

Standardized 10-point scale (1=severe discomfort, 10=complete comfort). Higher scores indicate improved comfort.

Baseline, Week 2, Week 4, Week 6
Investigator Global Assessment success rate
Prazo: Week 6

5-point categorical scale dichotomized as success (clear/almost clear) versus failure (mild/moderate/severe). Assessed in per-protocol population with complete Week 6 data.

Week 6
Hair manageability score (investigator-rated)
Prazo: Baseline, Week 2, Week 4, and Week 6

Standardized 10-point investigator visual scale (1 = unmanageable, 10 = optimal). Higher scores indicate better hair manageability.

Baseline, Week 2, Week 4, and Week 6

Outras medidas de resultado

Medida de resultado
Descrição da medida
Prazo
Adverse event rate
Prazo: Throughout 6-week study period

Number and severity of adverse events assessed via standardized query, severity grading (mild/moderate/severe), and causality assessment.

Throughout 6-week study period
Scalp irritation score
Prazo: Week 2, Week 4, Week 6

Scalp irritation assessed at each visit via participant self-report with severity grading.

Week 2, Week 4, Week 6
Product adherence percentage
Prazo: Throughout 6-week study period

Compliance assessed via returned product weighing (expected use: 35 g/week) and electronic diary entries; per-protocol threshold: ≥80% of expected use.

Throughout 6-week study period

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Investigadores

  • Cadeira de estudo: Hisham M Kasem, Prof., Syrian Scientific Society for Medicinal Herbs and Complementary Medicine (SHAMNA)

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

6 de abril de 2024

Conclusão Primária (Real)

18 de maio de 2024

Conclusão do estudo (Real)

18 de maio de 2024

Datas de inscrição no estudo

Enviado pela primeira vez

16 de abril de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

24 de abril de 2026

Primeira postagem (Real)

30 de abril de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

23 de outubro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

20 de outubro de 2026

Última verificação

1 de outubro de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • SHAMNA-2024-008
  • SHAMNA-008-2024 (Identificador de registro: Syrian Scientific Society for Medicinal Herbs and Complementary Medicine (SHAMNA))

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

SIM

Descrição do plano IPD

De-identified participant-level data, study protocol, SAP, data dictionary, and analytic code (SAS and R) are publicly available in Harvard Dataverse.

Prazo de Compartilhamento de IPD

Available since May 2026; permanent availability with DOI

Critérios de acesso de compartilhamento IPD

Open public access via the repository; no request required.

Tipo de informação de suporte de compartilhamento de IPD

  • PROTOCOLO DE ESTUDO
  • SEIVA
  • ANALYTIC_CODE

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .