Hydrocolloid

A hydrocolloid patch combines a gel-forming material with an adhesive film. When it sits on a weeping blemish it absorbs fluid such as pus and oil, keeps the spot moist and covered, and acts as a physical barrier against picking and bacteria from fingers. That is why patches work best on whiteheads that have come to a head or spots that are already open. They are not an acne treatment in themselves: dermatologists note they do little for deep, closed bumps or for preventing new breakouts, which still need actives such as benzoyl peroxide, salicylic acid or adapalene.

In our directory: It’s a key ingredient in 1 product we review, most often exfoliants & masks. Those products are mostly built for acne and soothing.

Apply to a clean, dry spot that has a visible head or has already opened, press down, and leave it on for several hours or overnight until the patch turns white.

References

1. 1How Do Pimple Patches Work? — Cleveland Clinic
2. 2How to treat a deep, painful pimple at home — American Academy of Dermatology
3. 3Efficacy and safety of a novel water-soluble herbal patch for acne vulgaris treatment: A randomized, assessor-blinds controlled, intra-individual split-face comparative study — PubMed

Educational, not medical advice. Ingredient guides summarise published research and expert guidance; formulas and concentrations differ between products.