And, because it acts like a virus shield the patch reduces the risk of contamination from the cold sore. It's Hydrocolloid-075 technology is an active gel that acts like a second skin. Compeed Cold Sore patch is made of a backing ‐ made from a Polyurethane film 15μm of thickness resting on a paper and protected by a polyethylene film ‐ coated with hydrocolloid adhesive.
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