What's Actually in a Hydrocolloid Patch?

Flip over most skincare and you get thirty ingredients. Flip over a SKINPATCH sheet and you get a very short story: six ingredients, no actives. That brevity is the product.

The full list

From most to least, exactly as assessed in our EU cosmetic safety report:

Hydrolyzed Corn Starch — the absorbent, gel-forming colloid.
Mineral Oil
Hydrogenated Poly(C6-20 Olefin)
Styrene/Isoprene Copolymer — film forming.
Polyisobutene — binding.
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate — an antioxidant.

The formula is water-free, and it carries no fragrance allergens and no nanomaterials.

How it works on a spot

Pressed over a blemish, the hydrocolloid draws fluid out of the spot and holds it in the film — which is why the patch turns opaque white as it works. It also keeps the spot covered, so fingers, friction and makeup stay off it.

The seal

The rubber-based film (styrene/isoprene and polyisobutene) bonds to clean, dry skin and releases with one clean peel. It is why application has one real rule: bare skin first, skincare after. Oils and serums under the patch break the seal.

What's deliberately not in it

No acids. Nothing medicated.
No fragrance. Our safety assessment found no fragrance allergens.
No added actives. Occlusion only — the mechanism is physical, not chemical.

Our safety assessment, signed by a European Registered Toxicologist, does not expect the patch to irritate skin under normal use. Everyone's skin is different, though: avoid the eye area, and stop if irritation or redness occurs. See the full lab results.

Thickness is the real variable

Between patches, the meaningful difference isn't a secret ingredient — it's the film. Our Day patch is a 0.03 mm matte film built to disappear; Night is thicker, built to absorb hard for 6–8 hours while you sleep. Same material, two jobs — both in the Combo.

Hydrocolloid patches support the skin's natural barrier; they are not a medicated treatment. Full usage questions are in the FAQ.