The main component of hydrocolloid acne patch is a highly hydrophilic colloid, abbreviated as hydrocolloid.

The hydrocolloid is formed by heating and stirring Carboxymethyl cellulose sodium particles (CMC), hypoallergenic medical viscose, elastomer, plasticizer, etc. Its surface is coated with a semi permeable polymer film structure. It has a strong ability to absorb exudates and is a widely used material in the field of wound care.
After contacting with wound exudate, hydrocolloid can absorb Exudate and form a gel, which ensures the wet environment of the wound and is conducive to wound healing. At the same time, the Semipermeable membrane structure on the surface can allow the exchange of oxygen and water vapor, but it is also barrier to external particulate matters such as dust and bacteria.