Glycerin is a naturally derived humectant—a ingredient that draws moisture from the air into your skin. It's one of the most widely used and well-studied moisturizing agents in skincare, helping skin feel softer and more hydrated.
Benefits
Attracts and retains moisture in the skin
Improves skin hydration and softness
Helps strengthen skin barrier function
Suitable for most skin types, including sensitive skin
Science: The Cosmetic Ingredient Review Expert Panel concluded glycerin is safe as used in cosmetics across all concentrations. Research shows glycerin effectively improves skin hydration and is well-tolerated with minimal irritation risk. It is also referenced in clinical guidelines for managing inflammatory skin conditions and maintaining skin integrity.
Decyl glucoside is a mild, plant-derived surfactant made from natural fatty alcohols and glucose. It's used in skincare products to cleanse the skin and help other ingredients mix together, and is generally gentler than many traditional detergents.
Benefits
Mild cleansing action suitable for sensitive skin
Plant-based and renewable ingredient
Functions as an effective emulsifier to stabilize formulas
Potential concerns
Can cause allergic contact dermatitis in sensitive individuals—cases of sensitization have increased since the early 2000s
May cross-react with other similar glucoside ingredients
Can be irritating if formulation is not properly balanced
Science: The Cosmetic Ingredient Review panel concluded decyl glucoside is safe when used in non-irritating formulations at current concentrations. However, dermatology literature documents a steady rise in allergic contact dermatitis cases, particularly when it appears as a 'hidden' ingredient in sunscreens like Tinosorb M, making patch testing advisable for those with suspected sensitivities.
