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Open accessAnalysisJun 16, 2026

Oral probiotics and topical secretome in acne vulgaris: a double-blind RCT protocol

This paper describes a phase 2 RCT protocol to test oral probiotics and topical mesenchymal stromal cell secretome as adjuncts to standard acne therapy — no results have been generated yet.

CEvidence
Study
RCT protocol (phase 2, parallel-group, double-blind)
Sample
64
Effect
Insufficient
Duration
8 weeks

Context

Acne vulgaris involves skin and gut dysbiosis, and rising antibiotic resistance has prompted investigation of immunomodulatory alternatives such as probiotics and cell-derived secretomes.

What the study showed

The abstract reports no efficacy or safety data — it is solely a study protocol. The design includes four parallel arms evaluating oral probiotic, topical secretome, their combination, and dual placebo, all on top of standard therapy. Outcomes will be assessed at baseline and after 8 weeks.

How it was done

Phase 2 double-blind RCT with parallel-group design, four arms, n=64 patients with mild to moderate acne vulgaris, 8-week intervention.

Limitations

No outcome data are available; this assessment is based solely on the protocol abstract. A sample of 64 participants is small and may lack statistical power for microbiome subgroup analyses.

In clinical practice

No clinical practice change is supported by this protocol. Results, once published, may provide phase 2 evidence on adjunctive probiotic and secretome use in acne.

Microbiota Weekly

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