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.
Sodium hyaluronate is the salt form of hyaluronic acid, a naturally occurring substance found in your skin that acts like a moisture magnet. In skincare products, it absorbs water from the environment and binds it to your skin, helping to hydrate and plump the skin's surface.
Benefits
Delivers intense hydration to the skin
Helps reduce the appearance of fine lines by improving skin moisture
Supports skin barrier function
Suitable for all skin types, including sensitive and oily skin
Potential concerns
In very dry climates with low humidity, it may draw moisture from deeper skin layers if not sealed with an occlusive product
Rare allergic reactions are possible but extremely uncommon
Science: While the provided research focuses on intra-articular injections for joint health (showing good safety and efficacy), hyaluronic acid and its salt form are well-established in dermatology for topical hydration. The molecule's safety profile is well-documented across decades of use in medical and cosmetic applications, with severe adverse reactions being extremely rare.
Sodium citrate is a salt derived from citric acid that acts as a pH buffer and preservative in skincare products. It helps stabilize formulations and maintain skin compatibility by regulating acidity levels.
Benefits
Helps maintain optimal pH balance in skincare formulas
Preservative that extends product shelf life
Gentle and well-tolerated by most skin types
Science: Sodium citrate is recognized as safe for topical use in cosmetics and has a long history of food and pharmaceutical applications. The research provided relates to its use as an anticoagulant in medical settings and as a buffering agent in sports nutrition, demonstrating its established safety profile across multiple industries.
Phenoxyethanol is a preservative that prevents bacteria, yeast, and mold from growing in skincare products, helping them stay fresh and safe to use. It has been used safely in cosmetics for decades and is effective at very low concentrations.
Benefits
Prevents microbial contamination and product spoilage
Broad-spectrum antimicrobial activity against bacteria and yeast
Minimal impact on beneficial skin bacteria when used at approved levels
Potential concerns
Rare allergic contact dermatitis in sensitive individuals
May cause irritation if used in products at concentrations above 1%
Science: The European Scientific Committee on Consumer Safety considers phenoxyethanol safe for all consumers, including children, at concentrations up to 1%. Adverse effects observed in animal studies required exposure levels approximately 200 times higher than those in cosmetic products, and it is classified as one of the most well-tolerated preservatives in cosmetics.
Ethylhexylglycerin is a preservative and antimicrobial ingredient used to prevent bacterial growth and extend shelf life in skincare products. It's a multifunctional ingredient that helps keep formulations stable and free from contamination.
Benefits
Prevents bacterial contamination in products
Helps extend product shelf life
Works synergistically with other preservatives for enhanced protection
Potential concerns
May not be effective against all bacterial species (notably some Pseudomonas aeruginosa strains)
Preservative-related sensitization possible in sensitive individuals, though uncommon
Science: Research shows ethylhexylglycerin has broad antimicrobial activity against many common cosmetic contaminants, though effectiveness varies by bacterial species. Studies demonstrate it can work synergistically with other preservative components to enhance biofilm inhibition.
Betaine is a naturally occurring compound found in plants like sugar beets and rice that helps skin retain moisture. In skincare products, it works as a humectant to draw water into the skin and maintain hydration.
Benefits
Hydrates and moisturizes skin
Helps skin retain water
May have anti-inflammatory properties
Generally non-irritating and well-tolerated
Science: Research indicates betaine (particularly in combination with polyhexanide) is nontoxic and well-tolerated in topical applications. Studies on rice-derived betaine show it is safe, non-irritating, and hypoallergenic, with potential anti-inflammatory and moisturizing benefits for skin.
Ginkgo Biloba Leaf Extract is a plant-derived ingredient used in skincare for its antioxidant and skin-conditioning properties. It comes from the leaves of the ginkgo tree and is included in products to help protect skin and improve its overall condition.
Benefits
Antioxidant protection against environmental stress
May help reduce skin inflammation
Skin conditioning and soothing properties
Potential concerns
May cause sensitization in some formulations — products should be tested to ensure non-sensitizing formulas
Ginkgolic acid impurities are a concern; quality varies depending on manufacturing practices
When combined with other botanical ingredients containing similar compounds, there's potential for cumulative irritation
Science: Expert safety panels confirm that properly formulated ginkgo biloba leaf extracts are safe at current use levels, though manufacturing quality controls are important to minimize ginkgolic acid impurities. Research shows the extract has anti-inflammatory and antioxidant effects comparable to some pharmaceutical treatments, though effects are modest.
Licorice root extract is a plant-derived ingredient known for its soothing and brightening properties. It contains compounds that may help calm irritation, reduce redness, and promote a more even skin tone.
Benefits
May soothe and calm irritated or inflamed skin
Can help reduce redness and uneven skin tone
Has mild antioxidant properties to protect skin
Potential concerns
Rare allergic contact dermatitis in sensitive individuals
May cause irritation in very high concentrations
Science: Licorice root extract has been used in traditional medicine and cosmetics for decades with a good safety profile. Research suggests active compounds like glycyrrhizin and glabridin may have anti-inflammatory and skin-brightening effects, though most evidence comes from in vitro or animal studies rather than large human trials.
