Colloidal oatmeal for dry skin has been used in skincare for generations, especially in products made for rough, tight, or easily irritated skin. But despite the familiar name, it isn’t quite the same thing as the oatmeal sitting in your kitchen cabinet.
Colloidal oatmeal is finely milled oat material that is processed so it can disperse throughout a skincare formula and make better contact with the skin. It contains naturally occurring starches, lipids, proteins, beta-glucans, and compounds called avenanthramides that contribute to its skin-soothing properties.
At Hive & Holler, we include colloidal oatmeal in our Solid Lotion Bars because it complements the oils, butters, and beeswax in the formula and makes sense for a product designed with dry skin in mind.
What Is Colloidal Oatmeal?
Colloidal oatmeal is made by grinding oats into an extremely fine powder. The particles are small enough to disperse in water or become evenly incorporated into cosmetic and skincare products.
That fine texture matters. Regular rolled oats or coarsely ground oatmeal do not behave the same way in a finished skincare formula.
Colloidal oatmeal contains several naturally occurring components that are useful in topical products, including:
- Starches
- Beta-glucans
- Lipids
- Proteins
- Antioxidant compounds called avenanthramides
Research has found that products containing colloidal oatmeal can improve measurements of skin dryness, moisturization, and skin-barrier function. One clinical study involving people with moderately to severely dry skin found significant improvement after use of a colloidal oatmeal skin-protectant lotion.
Why Use Colloidal Oatmeal for Dry Skin?
Dry skin is often partly a barrier problem.
The outermost layer of your skin helps slow the loss of water from the body while protecting the tissue underneath from the surrounding environment. When that barrier is disrupted, skin may feel tight, rough, flaky, or uncomfortable.
Colloidal oatmeal is commonly included in skincare because its components can help support that outer layer while also leaving the skin feeling softer and more comfortable.
It Helps Support the Skin Barrier
Studies on colloidal oatmeal have found effects related to skin-barrier function, including changes involving epidermal differentiation and lipid regulation. Clinical testing has also shown improvements in skin dryness and moisturization after topical use. Research published in the Journal of Drugs in Dermatology examined both the biological activity of colloidal oatmeal and its effect on people with dry skin.
This doesn’t mean colloidal oatmeal magically “repairs” every skin problem. It simply makes it a useful ingredient in formulas intended to help maintain soft, comfortable skin.
It Can Help Soothe Dry, Uncomfortable Skin
Oats contain compounds known as avenanthramides. These naturally occurring antioxidants have been studied for their anti-inflammatory and soothing activity.
Research involving a colloidal oatmeal skin-protectant lotion found improvements in dryness, scaling, roughness, and itch intensity in people with dry, itchy skin. You can read the study here.
It Helps Skin Hold Onto Moisture
Colloidal oatmeal contains starches, beta-glucans, and lipids that help create a soft film on the skin and support moisture retention.
That makes it a natural partner for other moisturizing ingredients such as plant oils, butters, and waxes.
Is Colloidal Oatmeal the Same as Regular Oatmeal?
No.
They both come from oats, but they are prepared differently and are not interchangeable in a skincare formula.
Regular oatmeal is made for eating. Even when it is ground at home, the particles may remain relatively coarse and inconsistent.
Colloidal oatmeal is processed specifically to create a very fine, uniform powder suitable for topical use.
This is why simply grinding breakfast oats in a blender does not necessarily create the same ingredient used in professionally formulated skincare.
Is Colloidal Oatmeal an FDA-Recognized Skin Protectant?
Yes, but there is an important distinction.
The U.S. Food & Drug Administration includes colloidal oatmeal among the active ingredients permitted in certain over-the-counter skin-protectant drug products when those products meet the applicable formulation, labeling, and regulatory requirements.
That does not mean that every cosmetic containing colloidal oatmeal is automatically an FDA-approved treatment for eczema, rashes, itching, or other skin conditions.
Hive & Holler Solid Lotion Bars are cosmetic moisturizers. We include colloidal oatmeal as a skincare ingredient, not to market the bars as a drug or medical treatment.
Why We Use Colloidal Oatmeal in Our Solid Lotion Bars
Our Solid Lotion Bars are waterless. They are made primarily from beeswax, oils, and plant butters rather than a traditional water-based lotion or cream.
Colloidal oatmeal fits nicely into that type of formula because it adds another skin-focused ingredient without requiring us to turn the product into a water-based emulsion.
Our Solid Lotion Bar formula includes ingredients such as beeswax, shea butter, mango butter, coconut oil, sweet almond oil, avocado oil, jojoba oil, tapioca starch, colloidal oatmeal, and vitamin E.
The oils and butters help soften the skin, while beeswax helps give the bar its structure and slows moisture loss from the skin’s surface. Colloidal oatmeal complements those ingredients and is one reason we chose to include it in the formula.
If you’d like to learn more about the solid format itself, our guide What Is a Solid Lotion Bar? How It Works & How to Use One explains how waterless lotion bars differ from regular bottled lotion.
Does Colloidal Oatmeal Add Water to a Lotion Bar?
No.
This is one area that can be confusing because the word “oatmeal” may make people picture cooked oats.
The colloidal oatmeal we use is a dry powder. It does not add water to the lotion bar.
That is important for our formula because our Solid Lotion Bars are intentionally made without a water phase.
Why Not Use Honey in a Solid Lotion Bar?
Honey and colloidal oatmeal sometimes appear together in skincare products, but they behave very differently in a formula.
Honey contains water and is water-soluble. Our Solid Lotion Bars are made from oils, butters, waxes, and other ingredients suited to an anhydrous, or waterless, formula.
Adding regular honey to that kind of product is not as simple as stirring it into melted oils. Water-based and oil-based ingredients do not naturally stay mixed without the proper formulation system.
For that reason, our Solid Lotion Bars do not contain honey.
We prefer to formulate each product around ingredients that make sense for that particular format rather than adding honey simply because Hive & Holler is a beekeeping business.
Can Colloidal Oatmeal Be Used on Sensitive Skin?
Colloidal oatmeal is commonly used in products intended for dry and sensitive skin, and studies of oatmeal-containing personal-care products have generally found a low rate of irritation and sensitization. One large safety review evaluated oatmeal-containing creams, lotions, and cleansers.
That said, no ingredient is right for absolutely everyone.
Anyone with a known oat allergy or sensitivity should review ingredients carefully and speak with an appropriate healthcare professional if they are unsure whether an oat-containing skincare product is suitable for them.
Colloidal Oatmeal and Winter Dry Skin
Cold outdoor air, indoor heating, and frequent handwashing can make dry skin especially noticeable during winter.
That is one reason colloidal oatmeal is such a useful ingredient in products designed for dry hands and rough areas.
For more practical ways to manage seasonal dryness, read our guide on How to Prevent and Soothe Dry Skin During Winter.
Is Colloidal Oatmeal Worth Looking for in Skincare?
If dry, rough skin is one of your concerns, colloidal oatmeal is an ingredient worth knowing about.
It has been studied for its effects on skin dryness, comfort, moisturization, and the skin barrier, and it has a long history of topical use.
We use it because it fits naturally into what we want our Solid Lotion Bars to do: provide simple, concentrated moisture for hands and other dry areas without relying on a bottle of water-based lotion.
That combination of soothing, barrier-supporting, and moisture-retaining properties is why colloidal oatmeal for dry skin remains such a popular skincare ingredient.
If you’d like to try the formula for yourself, you can explore our Hive & Holler Solid Lotion Bars, available in a variety of scents along with a fragrance-free option.
References
- Ilnytska O, et al. Colloidal Oatmeal (Avena sativa) Improves Skin Barrier Through Multi-Therapy Activity. Journal of Drugs in Dermatology. 2016. PubMed.
- Reynertson KA, et al. Anti-inflammatory activities of colloidal oatmeal contribute to the effectiveness of oats in treatment of itch associated with dry, irritated skin. Journal of Drugs in Dermatology. 2015. PubMed.
- Nebus J, et al. Safety and efficacy of personal care products containing colloidal oatmeal. Clinical, Cosmetic and Investigational Dermatology. 2012. PubMed.
- U.S. Food & Drug Administration. OTC Monograph M016: Skin Protectant Drug Products for Over-the-Counter Human Use.