For centuries, the humble oat has been a secret weapon against dry, inflamed skin. Today, dermatologists worldwide are not just suggesting, but actively recommending products containing colloidal oatmeal—the star ingredient in high-quality oatmeal soap.
If you struggle with chronic dryness, eczema, or persistent itching, oatmeal soap offers a gentle, science-backed solution that cleanses without stripping your skin's vital barrier.
Below, we dive into the evidence behind this natural wonder and provide a simple, soothing DIY recipe so you can experience the benefits at home.
7 Science-Backed Benefits of Oatmeal Soap for Your Skin
The magic of oatmeal for skincare comes from its unique composition of phytochemicals, including phenols, starches, and beta-glucans, which work together to heal and protect the skin.
Here are the top seven reasons why dermatologists recommend incorporating oatmeal soap or cleansers into your routine:
1. Calms Itching and Inflammation (Anti-Pruritic Action)
The most notable benefit, especially for those with eczema, is its powerful anti-itch action. Oats contain a group of phenolic compounds called Avenanthramides. Research shows these compounds have a potent anti-inflammatory effect, actively reducing the release of pro-inflammatory cytokines and histamine, which are key triggers for itching (pruritus) and irritation.
2. Soothes Eczema and Atopic Dermatitis Symptoms
Colloidal oatmeal is officially recognized by the FDA as a safe and effective over-the-counter skin protectant. Studies have demonstrated that topical formulations of natural colloidal oatmeal can significantly alleviate the symptoms of atopic dermatitis (eczema) by working on multiple inflammatory pathways. In some cases, its regular use may even help reduce the need for topical corticosteroids.
3. Fortifies the Skin's Protective Barrier
The outermost layer of your skin (the stratum corneum) is your primary defense. Colloidal oatmeal contains a high concentration of starches and beta-glucans, a natural sugar complex. These molecules are highly viscous, meaning they attract and bind water to the skin, forming a protective, occlusive film that prevents moisture loss and helps restore a damaged barrier.
4. Gently Cleanses Without Drying
Unlike many conventional soaps which can be alkaline and harsh, colloidal oatmeal naturally contains compounds called saponins. These have soap-like, surfactant properties, allowing the oatmeal to act as a gentle cleanser and buffer. This means the soap can lift dirt and oil without destroying the skin’s natural, slightly acidic pH balance, which is crucial for healthy skin.
5. Acts as a Powerful Antioxidant Shield
Oats are rich in antioxidants like Vitamin E, Ferulic Acid, and Avenanthramides. These ingredients help neutralize free radicals caused by environmental stressors like UV light and pollution. This antioxidant effect protects skin cells from damage, which in turn helps keep your skin looking healthy and may reduce visible signs of aging.
6. Provides Gentle Physical Exfoliation
If you use whole or coarsely ground oats in your soap, it offers mild physical exfoliation, helping to slough off dry, dead skin cells. However, for highly sensitive skin and conditions like eczema, using finely ground colloidal oatmeal is essential to ensure the soap is non-abrasive and truly soothing.
7. Hydrates and Moisturizes Deeply
Beyond just creating a barrier, the beta-glucans and lipids in oatmeal actively draw water to the skin, increasing hydration. For those with chronic dry skin or xerotic dermatoses, using an oatmeal soap is an excellent first step in a moisturizing routine, as it prepares the skin to better absorb lotions and emollients afterward.
DIY Soothing Oatmeal & Honey Soap (Melt-and-Pour Recipe)
Making your own oatmeal soap is incredibly easy using the melt-and-pour method. This recipe is designed to be extra soothing for dry, sensitive, or itchy skin.
Why Honey?
Honey is a natural humectant, meaning it draws moisture from the air and locks it into the skin, complementing the barrier-repair properties of the oatmeal.
Ingredients & Supplies
Note on Colloidal Oats: To make colloidal oatmeal from regular rolled oats, simply pulse them in a clean blender or food processor for several minutes until they become a fine, velvety powder that dissolves easily in water.
Instructions (Quick & Easy Method)
Step 1: Prepare the Base
Cut the 1-pound soap base into small, uniform 1-inch cubes.
Place the cubes into your microwave-safe container. Melt the soap in 30-second bursts, stirring between each burst, until the base is completely liquid and smooth. Be careful not to let it boil.
Step 2: Incorporate the Actives
Once melted, allow the soap base to cool slightly for about 2-3 minutes.
Stir in the raw honey and your chosen carrier oil until fully combined.
Step 3: Add the Oatmeal
Add the 2 tablespoons of colloidal oatmeal (and the essential oil, if using).
Stir gently but thoroughly. The goal is to distribute the oatmeal evenly without creating too many air bubbles. A thicker soap base (like goat's milk) will help suspend the oats better.
Step 4: Pour and Cure
Carefully pour the mixture into your silicone soap mold.
Optional: Lightly spritz the surface with rubbing alcohol to eliminate any bubbles that rise to the top.
Allow the soap bars to cool and harden completely at room temperature for at least 2 to 4 hours, or until they are firm to the touch.
Step 5: Unmold and Enjoy
Carefully pop the bars out of the mold. Your gentle, moisturizing, dermatologist-approved oatmeal soap is ready to use!
Final Takeaway
Oatmeal soap is far from a trendy product; it is a centuries-old remedy validated by modern science and backed by dermatological recommendations. Its unique combination of anti-inflammatory, antioxidant, and barrier-repair properties makes it an essential cleanser for anyone seeking relief from dry, irritated, or itchy skin conditions like eczema.
By creating your own batch, you ensure your soap is free from the common irritants (synthetic fragrances, harsh detergents) that often undermine the soothing power of the oat itself.