Autan insect bite patches This medical device acts as a mechanical barrier for minor, superficial wounds and features an absorbent pad that relieves itching, redness, and irritation. The plaster is made of an ultra-thin, absorbent hydrocolloid material. It relieves itching within minutes, reduces swelling and redness, and protects the skin from scratching and infection. Thanks to its hydrocolloid technology, the plaster creates a moist wound environment that supports the skin's natural regeneration process and helps prevent scarring.