The science
The star ingredient in this formula — colloidal oatmeal — has one of the strongest evidence bases of any natural skincare ingredient. The FDA granted colloidal oatmeal skin protectant status based on over 30 clinical studies involving more than 3,000 patients, a recognition that very few botanical ingredients have achieved.
The mechanism is multifaceted. Reynertson et al. demonstrated in the Journal of Drugs in Dermatology (2016) that colloidal oatmeal induces expression of genes related to epidermal differentiation, tight junction formation, and lipid regulation — essentially, it teaches skin cells to build a better barrier. The avenanthramides unique to oat are potent anti-inflammatory compounds; Sur et al. showed in the same journal (2008) that these compounds diminish pro-inflammatory cytokines and clinically improve dryness, scaling, roughness, and itch.
What makes this formulation particularly interesting is the dual delivery. The 3% oat kernel oil provides omega fatty acids and ceramide precursors in a lipid-soluble form, while the 1% colloidal oatmeal flour delivers the avenanthramides and beta-glucans in a particulate form. Together, they address barrier repair from two angles: the oil phase replenishes lipids while the flour phase modulates inflammation.
A study published by Cerio et al. confirmed that even a 1% concentration of colloidal oatmeal applied twice daily significantly improved symptoms of mild to moderate atopic dermatitis after four weeks (Journal of Drugs in Dermatology, 2017). While this was studied in a leave-on formulation rather than a rinse-off balm, the presence of film-forming Biosaccharide Gum-4 in this formula helps retain some of the oat's benefits on the skin surface even after rinsing.
The supporting cast is sensible: sweet almond oil is rich in oleic acid (a natural emollient) and tocopherol provides antioxidant protection for the unsaturated oils in the formula, preventing oxidative degradation that could generate irritating byproducts.
References 3 ShowHide
- Colloidal Oatmeal <em>(Avena Sativa)</em> Improves Skin Barrier Through Multi-Therapy Activity. — Journal of Drugs in Dermatology (2016)
- Anti-inflammatory activities of colloidal oatmeal (Avena sativa) contribute to the effectiveness of oats in treatment of itch associated with dry, irritated skin. — Journal of Drugs in Dermatology (2008)
- A 1% Colloidal Oatmeal Cream Alone is Effective in Reducing Symptoms of Mild to Moderate Atopic Dermatitis: Results from Two Clinical Studies. — Journal of Drugs in Dermatology (2017)