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.
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.
Rosemary leaf oil is an essential oil extracted from the rosemary plant. It's commonly added to skincare products for its pleasant herbal scent and potential antioxidant properties that may help protect skin from environmental damage.
Benefits
Antioxidant protection against free radicals
May help improve circulation and skin appearance
Pleasant natural fragrance
Potential concerns
Can cause irritation or sensitization in people with sensitive skin
Essential oils are potent and may trigger allergic reactions
Potential photosensitivity in some individuals, especially at high concentrations
Science: Rosemary oil contains compounds like carnosic acid and rosmarinic acid with known antioxidant properties in laboratory studies. Limited peer-reviewed data available on its safety and efficacy specifically in topical skincare formulations at typical product concentrations.
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.
Cetearyl glucoside is a natural, plant-derived emulsifier made from fatty alcohols and glucose. It helps bind water and oil together in skincare products to create smooth, stable creams and lotions.
Benefits
Creates stable emulsions with a smooth texture
Naturally derived and considered skin-friendly
Gentle alternative to synthetic emulsifiers
Potential concerns
Rare cases of allergic contact dermatitis reported in sensitive individuals
May affect how active ingredients penetrate the skin depending on formulation
Science: Research shows cetearyl glucoside forms stable emulsions with complex internal structures that can influence how sunscreen and other actives penetrate skin. One case of allergic contact dermatitis was documented, though such reactions appear uncommon.
Benzyl alcohol is a preservative and solvent commonly used in skincare products to prevent bacterial and fungal growth, extending shelf life. It also helps dissolve and mix other ingredients together in formulations.
Benefits
Preserves product freshness and prevents microbial contamination
Helps stabilize and blend formula ingredients
Generally recognized as safe for topical use in cosmetics at approved concentrations
Potential concerns
Can cause skin irritation or allergic contact dermatitis in sensitive individuals
May cause stinging or dryness on broken or compromised skin
High systemic absorption in infants and neonates is a known concern; products containing benzyl alcohol should be kept away from babies and nursing mothers should avoid application to breast tissue
Science: Benzyl alcohol is widely used in pharmaceutical and cosmetic formulations as a preservative. Research indicates it has low systemic absorption through intact adult skin at typical cosmetic concentrations, but neonatal toxicity is a documented concern at high doses, warranting caution in products used near infants or during breastfeeding.
Dehydroacetic acid is a preservative used in skincare products to prevent bacterial and fungal growth, helping extend shelf life and maintain product safety. It's been used in cosmetics for decades and works by inhibiting microbial activity.
Benefits
Prevents bacterial and fungal contamination in products
Extends product shelf life
Allows products to remain safe and effective over time
Potential concerns
May cause sensitivity or irritation in individuals with fragrance or preservative sensitivities
Can interact with other preservatives in formulations, potentially reducing effectiveness
Science: The Cosmetic Ingredient Review Expert Panel has repeatedly affirmed the safety of dehydroacetic acid when used at current concentrations and practices, most recently in 2024 after reviewing updated safety data. The ingredient has been assessed as safe in cosmetics since 1985 with consistent reaffirmation in subsequent reviews.
Cetyl palmitate is a waxy, oil-like ingredient derived from natural sources that acts as an emollient and thickening agent in skincare formulas. It helps soften and smooth the skin while improving the texture and stability of creams and lotions.
Benefits
Softens and conditions the skin
Improves product texture and spreadability
Helps stabilize formulations
Creates a light, non-greasy feel
Science: Research demonstrates that cetyl palmitate is commonly used as a lipid component in advanced skincare delivery systems (solid lipid nanoparticles) and has been shown to be well-tolerated in topical formulations. The ingredient has a long history of safe use in cosmetics with no documented irritation concerns in peer-reviewed literature.
