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.
Caprylic/Capric Triglyceride is a lightweight oil derived from coconut that acts as an emollient and helps formulations blend smoothly. It softens skin and reduces water loss by creating an occlusive barrier on the skin's surface.
Benefits
Improves skin hydration and reduces transepidermal water loss (TEWL)
Lightweight, non-greasy feel compared to heavier oils
Helps deliver other active ingredients deeper into the skin
Smooth, silky texture in skincare formulations
Science: Research shows that emulsions containing 15% caprylic/capric triglyceride significantly increase skin hydration and reduce water loss in healthy subjects. The ingredient is also used as an effective carrier oil in nanoemulsions to enhance penetration of active compounds into skin.
Propylene glycol is a lightweight humectant and solvent commonly used in skincare formulations. It helps draw moisture into the skin and improves the texture and spreadability of products.
Benefits
Hydrates skin by attracting and retaining moisture
Enhances product texture and makes formulas easier to apply
Helps active ingredients penetrate the skin more effectively
Improves stability and shelf life of formulations
Potential concerns
May cause contact dermatitis or irritation in sensitive individuals
Can occasionally trigger allergic reactions in susceptible people
High concentrations may feel sticky or heavy on some skin types
Science: Research confirms propylene glycol acts as a penetration enhancer in topical formulations, improving skin uptake of active ingredients. The ingredient is widely studied and considered safe at typical cosmetic concentrations, though individual sensitivity varies.
Zinc oxide is a mineral UV filter that sits on top of your skin to physically block both UVA and UVB rays from reaching your skin. It's one of the few sunscreen actives recognized as safe and effective by the FDA, and it doesn't get absorbed into your bloodstream.
Benefits
Provides broad-spectrum UV protection (blocks both UVA and UVB rays)
Mineral/physical blocker — doesn't absorb into skin, making it suitable for sensitive skin and safe during pregnancy
Photostable — doesn't degrade in sunlight
Generally well-tolerated with low risk of irritation or allergic reaction
Potential concerns
Can leave a white cast on skin, especially at higher concentrations needed for adequate protection
May feel heavy or thick in formulation
Science: Zinc oxide is a mineral UV filter with an established safety profile and is not systemically absorbed through skin. Current scientific evidence supports its efficacy and safety for routine sunscreen use, with no associated negative health effects documented. Unlike organic UV filters, it does not contribute to environmental concerns like coral bleaching.
Hydrogenated vegetable oil is a thickened plant-based oil made by adding hydrogen to vegetable oils, creating a solid or semi-solid texture. In skincare, it serves as an emollient and texture base that helps products feel smooth and creates a protective barrier on the skin.
Benefits
Moisturizes and softens skin
Creates a smooth, non-greasy product texture
Acts as a natural alternative to mineral oil-based ingredients
Science: Hydrogenated vegetable oil is well-established as a safe cosmetic ingredient and food additive. Research shows it can effectively serve as a vehicle for delivering active ingredients to skin while being mild and non-irritating for topical use.
