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.
Caprylyl glycol is a preservative and skin-conditioning ingredient derived from coconut oil. It helps prevent bacterial and mold growth in skincare products while also providing mild hydrating and humectant benefits to the skin.
Benefits
Helps preserve product freshness and prevent contamination
Provides gentle humectant properties to help retain skin moisture
Often used as a gentler alternative to traditional preservatives
Potential concerns
Rare cases of allergic contact dermatitis have been reported in sensitive individuals
May cause irritation in those with known sensitivity to glycols
Science: A 200-subject repeat patch test study found no delayed hypersensitivity reactions to caprylyl glycol at typical use concentrations. However, isolated case reports of allergic contact dermatitis exist, suggesting it can act as an allergen in susceptible individuals. It is widely used in infant and sensitive-skin formulations as a preservative alternative.
Potassium sorbate is a preservative used in skincare products to prevent the growth of mold, yeast, and some bacteria, helping extend shelf life. It's a salt derived from sorbic acid and is commonly used as a gentler alternative to stronger chemical preservatives.
Benefits
Prevents microbial contamination and mold growth
Generally considered milder than some other preservatives like benzalkonium chloride
Allows products to remain effective longer without refrigeration
Potential concerns
May cause irritation or allergic contact dermatitis in sensitive individuals
Not suitable for preservative-free formulations
Limited effectiveness against some bacteria compared to stronger preservatives
Science: Clinical research suggests potassium sorbate is less damaging to delicate tissues than benzalkonium chloride, making it a preferred alternative preservative in sensitive applications like eye products. However, peer-reviewed safety data specific to topical skincare use in the general population is limited.
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.
Niacinamide is an active form of vitamin B3 that works within your skin's cells to strengthen the barrier, reduce inflammation, and regulate oil production. It's a water-soluble ingredient that's been shown to have multiple benefits across different skin concerns, from sensitivity to aging.
Benefits
Reduces redness and calms irritation
Minimizes pore appearance and controls excess oil
Supports skin barrier function and hydration
Brightens skin tone and evens complexion
Has anti-aging properties and protects against environmental damage
Science: Niacinamide is well-tolerated and safe across diverse skin types with strong clinical evidence supporting its use for acne, dermatitis, and general skin health. Research shows it works by regulating inflammation at the cellular level and protecting skin barrier integrity, with proven efficacy in concentrations commonly found in cosmetic products.
Xanthan gum is a natural thickener derived from fermented bacteria that helps give skincare products a smooth, gel-like texture. It stabilizes formulas and prevents ingredients from separating, while also helping products spread evenly on skin.
Benefits
Creates smooth, pleasant texture
Stabilizes emulsions and prevents separation
Improves product spreadability and application
Science: Xanthan gum is an FDA-approved, anionic polysaccharide with a long history of safe use across food, pharmaceutical, and cosmetic industries since 1969. Its performance as a thickener and stabilizer is well-established in scientific literature, with no notable skin irritation concerns reported.
Resveratrol is a natural antioxidant compound found in grapes, berries, and red wine. In skincare, it works to neutralize free radicals caused by UV damage and environmental stress, helping to protect skin from premature aging and maintain overall skin health.
Benefits
Antioxidant protection against UV damage and environmental stressors
May help reduce signs of photoaging (sun damage)
Supports skin cell repair and regeneration
Science: Research indicates resveratrol is effective as a topical cosmeceutical for treating photodamaged skin, with evidence ranging from high-quality Level I to Level II studies. It works synergistically with other antioxidants to neutralize free radicals and repair environmentally damaged skin cells.
Glyceryl stearate is a natural emulsifier and thickener derived from vegetable oils and glycerin. It helps bind water and oil together in skincare formulas, creating a smooth texture while providing mild moisturizing properties.
Benefits
Helps create stable, smooth product textures
Mild emollient that softens skin
Derived from natural sources (vegetable-based)
Science: The Cosmetic Ingredient Review Expert Panel confirmed in 2023 that glyceryl stearate and related glyceryl diesters are safe for cosmetic use at standard concentrations. Research indicates the ingredient has a skin-safe pH profile and demonstrates good stability in formulations.
Cetearyl alcohol is a waxy, fatty alcohol derived from vegetable or petroleum sources that acts as an emulsifier and thickener in skincare products. It helps blend oil and water-based ingredients together and gives creams and lotions their smooth, spreadable texture.
Benefits
Stabilizes emulsions to prevent separation of oil and water
Thickens and improves texture of creams and lotions
Creates a smooth, non-greasy feel on skin
Potential concerns
Rare allergic contact dermatitis reported in sensitive individuals
May cause localized irritation or allergic reactions in patch-tested cases
Science: Cetearyl alcohol is widely used as an emulsifier in topical formulations and generally has a good safety profile. However, multiple case reports document allergic contact dermatitis in susceptible individuals, suggesting it can act as a contact allergen in rare cases. It does not significantly penetrate skin and primarily remains in the formulation.
Sodium PCA is a natural humectant—a moisture-binding ingredient derived from pyrrolidone carboxylic acid—that helps skin attract and retain water. It works by drawing hydration into the outer layers of skin, making it a gentle, well-tolerated moisturizing agent.
Benefits
Hydrates and moisturizes skin by binding water to the stratum corneum
Helps improve skin softness and smoothness
Well-tolerated by most skin types, including sensitive skin
Science: The Cosmetic Ingredient Review Expert Panel (2019) concluded that sodium PCA is safe for use in cosmetics at current concentrations and practices. Research confirms it localizes effectively in the outer skin layer where it functions as a humectant, with no significant safety concerns identified in peer-reviewed assessments.
Phenethyl alcohol is a naturally occurring organic compound commonly used in skincare products as a preservative and fragrance ingredient. It helps extend shelf life while contributing a subtle floral aroma to formulations.
Benefits
Natural preservative properties that help prevent microbial growth
Mild fragrance contribution with a pleasant floral scent
Generally well-tolerated by most skin types
Potential concerns
Potential skin irritation in sensitive individuals at higher concentrations
May cause allergic contact dermatitis in fragrance-sensitive people
Science: Phenethyl alcohol is recognized as a safe aroma compound naturally produced during fermentation processes and has established applications in cosmetics. Limited peer-reviewed dermatological safety data is available; safety profile is primarily established through historical use and regulatory approval rather than extensive clinical skincare studies.
Sorbic acid is a preservative used in skincare products to prevent the growth of bacteria, fungi, and mold, helping extend shelf life. It's a naturally-derived organic acid that's been safely used in food and cosmetics for decades.
Benefits
Prevents microbial contamination and product spoilage
Effective across a range of pH levels, including mildly acidic formulas
Well-established safety history in food and cosmetic applications
Potential concerns
Can cause transient redness, swelling, and irritation at concentrations as low as 0.1%, particularly on sensitive facial skin
Irritation appears to be mediated by prostaglandin response rather than allergic reaction, so it may affect most people at higher doses
May cause discomfort in individuals with sensitive or compromised skin barriers
Science: Research shows sorbic acid triggers dose-dependent erythema and edema through prostaglandin-mediated inflammation rather than immune sensitization. While physiologically inert at approved preservation levels (typically well below 0.1%), it can provoke irritation responses in human skin, suggesting careful formulation and concentration limits are important for safety.
Isopropyl palmitate is a lightweight synthetic oil derived from palmitic acid, commonly used in skincare products as an emollient and texture enhancer. It helps soften and smooth the skin while improving the spreadability of creams and lotions.
Benefits
Lightweight moisturizing
Improves product texture and spreadability
Non-greasy feel on skin
Potential concerns
May be comedogenic for acne-prone or sensitive skin
Can accumulate on skin if overused
Science: Limited peer-reviewed data available specifically on isopropyl palmitate's skincare effects. The identified research notes it as a common exogenous ingredient found in cosmetic formulations, confirming its widespread use in the industry.
C10-18 Triglycerides is a lightweight plant-derived oil made from vegetable fats. It works as an emollient and skin-conditioning agent, helping to soften skin and improve the texture and feel of skincare products.
Benefits
Softens and smooths skin
Improves product spreadability and absorption
Provides light moisturization without heavy residue
Science: Limited peer-reviewed data available for this ingredient. C10-18 Triglycerides are generally recognized as safe by cosmetic regulatory bodies and are well-tolerated across skin types, with no documented sensitization concerns.
