One Roll Does It All-Save More- Use Longer: The hydrocolloid roll is easy to cut to size and shape for different applications: acne patches, hydrocolloid wound dressings, bandages and heel pads. edical Grade Hydrocolloid, Hypoallergenic: Passed skin irritation test, sensitization test, with 0 skin irritation, hypoallergenic, suitable for children and people with sensitive skin.