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Barrier & repair

Colloidal oatmeal

Also listed as Avena sativa (oat) kernel flour, Colloidal oatmeal (USP), Oat kernel extract and Avenanthramides

Strong evidence 0.007% minimum as an FDA skin protectant (21 CFR 347.10); product levels vary

Colloidal oatmeal is finely milled whole oat grain that disperses in water. It is one of the few cosmetic ingredients also recognized by the FDA as an over-the-counter skin protectant.

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What it does

The short version.

Oat starches and beta-glucans hold water and leave a protective film; lipids and proteins help cushion the barrier; and polyphenols called avenanthramides have anti-itch and anti-inflammatory activity in lab studies. In the U.S. skin protectant rules, colloidal oatmeal may be labeled for the temporary protection and relief of minor skin irritation and itching. It is common in body lotions, bath soaks and creams for dry, sensitive skin.

Strong evidence

FDA-recognized as a safe and effective skin protectant, with long clinical use and multiple controlled studies supporting relief of dryness and itch.

Reach for it for

SoothingDryness reliefBarrier repairFlaking reliefIrritation-free

Usually a good fit for

Dry skinSensitive skinAll skin typesNormal skin

How to use it

Getting it right.

Apply a colloidal oatmeal lotion or cream to dry or itchy areas as often as needed, ideally right after bathing. Bath products are dispersed in lukewarm water for a 15–20 minute soak.

Layering

Friends & frenemies.

Pairs well with

CeramidesShea butterPetrolatumGlycerinPanthenol

Before you start

Very well tolerated. People with a known oat allergy should avoid it. For persistent rashes or eczema flares, see a dermatologist.

References

  1. 1Colloidal oatmeal: history, chemistry and clinical properties — Journal of Drugs in Dermatology (2007), via PubMed
  2. 221 CFR 347.10 -- Skin protectant active ingredients — Electronic Code of Federal Regulations (U.S.)
  3. 3Efficacy of Nonprescription Moisturizers for Atopic Dermatitis: An Updated Review of Clinical Evidence — American Journal of Clinical Dermatology (2020), via PubMed Central

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

No colloidal oatmeal products reviewed yet.

We add products every week. The guide above still stands — and Beauty Match can find what suits you today.

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