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Updated: Jun 17, 2026

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Assessment of Acute Wound Healing using the Dorsal Subcutaneous Polyvinyl Alcohol Sponge Implantation and Excisional Tail Skin Wound Models.
Published on: March 25, 2020
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Randomized-Controlled Trial Comparing Safety and Efficacy of Repairing Balm vs Topical Antimicrobial for
Journal of Drugs in Dermatology : JDD
|May 6, 2025
Summary
A new repairing balm (CB5) showed equivalent wound healing to topical antibiotics (PSO) after actinic keratosis (AK) cryotherapy. This offers a safe alternative for post-procedural AK lesion care, addressing concerns about antibiotic resistance.
Area of Science:
- Dermatology
- Wound Healing
- Oncology
Background:
- Actinic keratoses (AKs) are pre-cancerous lesions on a continuum with squamous cell carcinoma.
- Cryotherapy is a common AK treatment, often followed by antimicrobial ointments for wound care.
- Concerns regarding antibiotic resistance and contact dermatitis necessitate exploring alternative post-procedural treatments.
Purpose of the Study:
- To evaluate the safety and efficacy of a novel repairing balm (CB5) compared to a topical antibiotic (PSO) for wound healing after actinic keratosis cryotherapy.
- To assess adverse events, erythema, oozing/crusting, and speed of recovery in post-procedural AK lesions.
Main Methods:
- A multicenter, intra-individual, randomized controlled trial was conducted with 60 participants.
- Participants received cryotherapy for AK lesions on both arms.
- Three lesions per arm were treated with either the repairing balm (CB5) or topical antibiotic (PSO) in a randomized manner.
Main Results:
- No significant differences were observed in healing time, erythema, or oozing/crusting between the CB5 and PSO groups.
- 100% of patients reported lesion improvement by day 21.
- No adverse events related to either study product were reported.
Conclusions:
- The repairing balm (CB5) demonstrated equivalent safety and efficacy to topical antibiotics (PSO) for post-procedural wound healing of actinic keratosis lesions.
- CB5 offers a viable alternative to topical antibiotics, mitigating risks associated with antibiotic resistance and contact dermatitis.
- Both treatments supported successful cutaneous wound healing following cryotherapy.

