Light-Activated Wound Dressings: Mechanism, Uses, and Precautions

Light-sensitive plasters contain methylene blue, a photosensitizer that reacts with light to produce free radicals, damaging bacteria/viruses. They change color when exposed to light, indicating activation.

Uses

• Protect wounds from infection (block UV rays).
• Treat eczema, psoriasis (reduce inflammation, itching).

Application

1. Cleanse wound/area with soap and water; dry thoroughly.
2. Apply plaster, sealing edges firmly.
3. Leave up to 24 hours.
4. Replace if needed.

Precautions

• Not for open or infected wounds.
• Avoid if sensitive to methylene blue.
• Avoid direct sunlight/bright light exposure.
• Discontinue if irritation occurs; consult doctor.