INCI: Colloidal Oatmeal - Also known as: Avena Sativa Kernel Meal, Finely Milled Oats

QUICK FACTS

What is Colloidal Oatmeal?

Colloidal oatmeal is produced by finely grinding whole Avena sativa oat kernels into a particle size small enough to remain suspended in water, creating a colloidal dispersion. Unlike regular oat flour, which settles out of suspension quickly, colloidal oatmeal remains evenly distributed in a formula, allowing its full range of bioactive components to make consistent contact with the skin's surface. It is one of the rare natural ingredients to carry formal FDA recognition as an over-the-counter skin protectant, based on decades of clinical use and a well-documented safety and efficacy profile.

The bioactive composition of colloidal oatmeal is more complex than its simple appearance suggests. It contains beta-glucan (a high-molecular-weight polysaccharide), avenanthramides (a unique class of phenolic compounds specific to oats), starches, proteins, lipids, and saponins. Each of these components contributes a distinct functional role, making colloidal oatmeal a genuinely multi-active ingredient rather than a single-mechanism soothing agent.

At Sweet Chemistry, colloidal oatmeal is formulated within all three water-based formulas below the 1% line alongside the amino acid blend and other NMF components. Its inclusion is specifically relevant to the barrier-supportive ambition of the Hydra-Serum and both creams - providing a surface-soothing, film-forming contribution that complements the ceramide and cholesterol-based lamellar barrier repair approach of the deeper actives.

What does it do for skin?

Colloidal oatmeal is primarily associated with three complementary functions in skincare. First, its beta-glucan and starch content is studied in connection with forming a protective, moisture-retaining film on the skin's surface - a semi-occlusive layer that helps reduce immediate trans-epidermal water loss while creating a smoother, more comfortable skin feel. Second, its avenanthramide content - a group of polyphenolic alkaloids found only in oats - has been studied for its association with a more settled skin surface, particularly in the context of reactive or sensitized skin types. Third, the beta-glucan it contributes independently functions as a surface humectant, studied in connection with drawing moisture toward the stratum corneum.

In combination with the ceramide complex, cholesterol, and niacinamide present in the Hydra-Serum, and with the full barrier lipid complex in both creams, colloidal oatmeal's surface-calming character creates a complementary approach: barrier lipids work to restore the structural lamellar layer from the inside, while colloidal oatmeal's surface film provides immediate comfort and moisture support at the surface. This two-level approach addresses both the visible and structural aspects of a compromised or reactive barrier.

Within the Sweet Chemistry Max Repair System's independent clinical study, 89% of subjects agreed their skin felt more comfortable and 93% reported healthier-looking skin - outcomes supported by the combined barrier, soothing, and hydration system across all three water-based formulas. Individual results may vary.

FOUND IN

In 3 Formulas

Colloidal oatmeal is present in all three water-based Sweet Chemistry formulas, contributing surface soothing and film-forming moisture support as part of the broader barrier and hydration system.

Nourishment - All Skin Types

Barrier Repairing Hydra-Serum Colloidal Oatmeal - 1.0 oz / 30 ml

The Hydra-Serum pairs colloidal oatmeal with 3% ceramides, 5% niacinamide, 2% seaweed glycan, and 3% Matrikynes® peptides - a comprehensive soothing and barrier approach for all skin types, including sensitive and oily.

Hydration - Dry to Normal

Elasticity Reinforcing Hydra-Cream Colloidal Oatmeal - 1.7 oz / 50 ml

In the Hydra-Cream, colloidal oatmeal contributes a surface soothing and moisture-film role alongside beta-glucan, glycerin, and four forms of hyaluronic acid within a 40%-active emulsion.

Hydration - Dry to Dehydrated

Elasticity Reinforcing Lipid-Cream Colloidal Oatmeal - 1.7 oz / 50 ml

The Lipid-Cream delivers colloidal oatmeal within the most emollient formula in the lineup - alongside shea butter, sea buckthorn, jojoba, and a full ceramide barrier complex for dry and dehydrated skin that may also present as sensitive.

WORKS TOGETHER WITH

Vitamin B3 Niacinamide

INCI: Niacinamide.

At 5% in the Barrier Repairing Hydra-Serum, studied in connection with barrier support and a more comfortable skin surface. Synergy Note: Colloidal oatmeal's avenanthramides are studied in connection with surface comfort; niacinamide is researched at the barrier lipid production level - together they address surface and structural aspects of the same concern simultaneously.

Polysaccharide Humectant Beta-Glucan

INCI: Beta-Glucan.

Present in all three water-based formulas alongside colloidal oatmeal. Colloidal oatmeal itself contains beta-glucan, and Sweet Chemistry's formulas also include purified beta-glucan as an independent ingredient. Synergy Note: Both ingredients are oat-derived polysaccharide sources - their combined presence reinforces the surface hydration film and moisture-retaining character associated with this ingredient family.

Barrier Lipid Complex Ceramides (NP, AP, EOP)

INCI: Ceramide NP, Ceramide AP, Ceramide EOP.

Present at 3% across all three water-based formulas as the structural barrier lipid system. Synergy Note: Ceramides address the structural lamellar barrier layer; colloidal oatmeal addresses the surface film - together they create a barrier support approach that works at both the structural and surface levels.

ECM Peptide Complex Matrikynes® Bone Peptides

INCI: Hydrolyzed Cow Bone Extract.

At 3% in all four formulas, associated with improvements in the appearance of skin density and aging signs. Synergy Note: A calmer, more settled skin surface - supported by colloidal oatmeal's soothing character - is associated with a more receptive environment for the dermal-targeting activity of Matrikynes® peptides.