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Ultra Facial Moisturizer SPF 30
Kiehl's Since 1851
Ingredients
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Analysis not yet available for this ingredient.
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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.
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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.
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This is a thickening and stabilizing agent that helps give skincare products their texture and consistency. It works by absorbing water and forming a gel-like network, making products feel smooth and creamy on the skin without leaving a greasy residue.
Benefits
- Creates smooth, pleasant product texture
- Helps stabilize emulsions and prevent separation
- Allows for lightweight formulations that don't feel heavy
Science: Limited peer-reviewed data available for this ingredient. It is widely used in cosmetics and generally recognized as safe by regulatory bodies including the CosIng database and is approved for use in the EU and US.
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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.
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Triethanolamine (TEA) is a pH adjusting agent and surfactant used in cosmetics to balance acidity and help mix oil and water-based ingredients. It's been used in skincare and makeup formulations for decades to improve product stability and texture.
Benefits
- Neutralizes acidic ingredients to achieve optimal skin pH
- Helps create stable, uniform product textures
- Allows better mixing of different ingredient types
Potential concerns
- May cause skin irritation or sensitization in sensitive individuals
- Can form potentially harmful nitrosamines when combined with certain preservatives
- Classified as a potential carcinogen in some recent literature reviews, though regulatory bodies consider it safe at approved concentrations
Science: A 2013 expert panel safety assessment by the Cosmetic Ingredient Review concluded TEA is safe as used in cosmetics. However, a 2023 analysis of commercial products identified TEA and its derivatives as potential carcinogens present in most facial makeup cosmetics tested, highlighting the need for longer-term safety studies on cumulative exposure.
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Tocopherol is a form of vitamin E, a fat-soluble antioxidant that protects skin from damage caused by free radicals and oxidative stress. It helps maintain skin's natural barrier function and is commonly used in skincare products to prevent premature aging and support overall skin health.
Benefits
- Protects skin from free radical damage and oxidative stress
- Supports skin barrier function and moisture retention
- May help reduce signs of aging caused by UV exposure and environmental damage
- Works as a lipid antioxidant to prevent degradation of skin oils
Science: Tocopherol (α-tocopherol) is recognized in peer-reviewed research as a key endogenous defense mechanism against oxidative stress in aging skin, particularly from UV-induced damage. Studies confirm it functions as a lipid-soluble antioxidant capable of preventing lipid peroxidation, with established efficacy in cosmetic and therapeutic applications.
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Squalane is a lightweight, skin-identical oil derived from squalene (a natural component of human sebum). It absorbs easily into the skin to lock in moisture and create a smooth, soft feel without leaving a greasy residue.
Benefits
- Hydrates and moisturizes skin
- Mimics skin's natural oils for better compatibility
- Lightweight emollient that doesn't clog pores
- Antioxidant properties
- Well-tolerated by most skin types
Science: The Cosmetic Ingredient Review Expert Panel confirmed squalane is safe for cosmetic use at typical concentrations (2023). Research demonstrates skin hydrating and emollient activity, and squalane is naturally present in human sebum at ~13%, making it biocompatible with skin.
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Hydrogenated polyisobutene is a lightweight oil derived from petroleum that works as an emollient (skin softener) and film-former in skincare products. It helps lock moisture into the skin and creates a smooth, non-greasy feel on application.
Benefits
- Improves skin hydration by reducing water loss from the skin surface
- Creates a smooth, pleasant skin texture with minimal greasiness
- Long-lasting moisturizing effect compared to some alternative emollients
- May provide subtle skin-tightening and smoothing effects when combined with certain polymers
Potential concerns
- Petroleum-derived ingredient; may not appeal to consumers seeking natural products
- Occlusive nature means it may feel heavy or cause buildup on very oily skin types
Science: Clinical studies demonstrate that hydrogenated polyisobutene effectively reduces transepidermal water loss (skin dehydration) by up to 33% and maintains this effect for several hours. When formulated with certain polymers, it contributes to measurable improvements in skin firmness and wrinkle appearance in aging skin.
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Stearic acid is a naturally occurring fatty acid commonly derived from plant or animal sources. In skincare products, it functions as an emollient and emulsifier, helping to soften skin, improve product texture, and stabilize formulations by allowing oil and water to mix together.
Benefits
- Softens and moisturizes skin by forming a protective barrier
- Improves product texture and stability
- Helps other active ingredients penetrate the skin more effectively
Potential concerns
- May cause mild irritation or sensitivity in people with very sensitive skin
- Can leave a slight waxy residue if used in high concentrations
Science: Research indicates stearic acid acts as a permeation enhancer, potentially improving how active ingredients cross the skin barrier. It is well-established in cosmetic formulation design and has a strong safety history in topical products.
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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.
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Disodium EDTA is a chelating agent that binds to metals and minerals in skincare formulations. It helps stabilize products, prevent discoloration, and improve texture by controlling how other ingredients behave in the formula.
Benefits
- Stabilizes skincare formulations and extends shelf life
- Prevents oxidation and discoloration of products
- Improves product texture and consistency
Potential concerns
- May increase skin penetration of other ingredients in the formula
- Not absorbed through skin under normal use, but inhalation from sprays should be minimized
- Can cause irritation at high concentrations, though typical use levels (under 2%) are considered safe
Science: The Cosmetic Ingredient Review Expert Panel confirmed in 2023 that disodium EDTA is safe at typical cosmetic use concentrations (under 2%). Research shows it is not absorbed through intact skin, though it may affect how other ingredients penetrate skin due to its mineral-binding properties. No carcinogenic effects have been identified.
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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.
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Myristyl alcohol is a fatty alcohol derived from natural sources like coconut oil. In skincare products, it functions as an emollient and thickening agent, helping to soften skin and improve the texture and stability of creams and lotions.
Benefits
- Softens and moisturizes skin
- Improves product texture and consistency
- Helps stabilize emulsions in formulations
Potential concerns
- May cause skin irritation, including increased redness and sensitivity, particularly at concentrations of 5% or higher
- Can increase transepidermal water loss (TEWL), meaning it may temporarily disrupt the skin barrier
- Irritation risk appears higher relative to its skin-penetrating effects compared to other fatty alcohols
Science: Research shows myristyl alcohol caused greater skin irritation than some other fatty alcohols tested, with notable increases in skin blood flow and erythema in animal studies. The study notes that further human volunteer testing at concentrations of 5% or lower is needed to establish safety for topical use.
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PEG-100 Stearate is an emulsifier—a ingredient that helps blend oil and water together in skincare creams and lotions. It's used to create smooth, stable textures and can help improve how well products spread on skin.
Benefits
- Helps create smooth, gel-like cream textures
- Improves physical stability of formulations
- May support skin barrier function when used in basic moisturizing formulas
Science: Research shows that formulations containing PEG-100 Stearate alongside other emulsifiers can improve skin barrier function and reduce trans-epidermal water loss, suggesting it may be suitable for compromised or sensitive skin in moisturizing products.
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Dicaprylyl Ether is a lightweight emollient derived from fatty acids that helps soften and smooth the skin. It works by creating a protective layer on the skin's surface, improving texture and moisture retention without leaving a greasy feel.
Benefits
- Softens and conditions skin
- Lightweight, non-greasy texture
- Improves skin smoothness
- Enhances product spreadability
Science: An Expert Panel for Cosmetic Ingredient Safety (Cosmetic Ingredient Review) assessed dicaprylyl ether as part of a group of fatty ethers used in cosmetics and concluded these ingredients are safe for use in cosmetic formulations at typical concentrations.
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Sorbitan Oleate is an emulsifier derived from sorbitol (a natural sugar alcohol) and oleic acid (a fatty acid). It helps mix oil and water-based ingredients together in skincare formulations, creating a smooth, stable texture.
Benefits
- Stabilizes oil-and-water mixtures in creams and lotions
- Improves product texture and spreadability
- Allows better absorption of other skincare actives
Potential concerns
- Mild skin irritant in some individuals; generally minimal irritation in testing
- Rare allergic contact reactions reported (<1% in sensitive populations)
- May reduce skin's DNA repair capacity when exposed to UV radiation (in lab studies)
Science: The Cosmetic Ingredient Review Expert Panel concluded Sorbitan Oleate is safe for cosmetic use at concentrations typically below 10%. While generally well-tolerated with minimal irritation in clinical tests, one in vitro study noted it may interfere with UV-induced DNA repair in human cells—a concern primarily relevant when combined with sun exposure rather than the ingredient alone.
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Avocado oil is a plant-based oil extracted from the fruit of the avocado tree. It's rich in fatty acids and vitamin E, making it a nourishing emollient that helps soften and hydrate the skin while improving the texture of skincare formulations.
Benefits
- Deep moisturization and skin softening
- Rich in antioxidants and vitamin E
- Helps improve skin barrier function
Potential concerns
- May cause comedogenic reactions in acne-prone individuals
- Possible allergic contact dermatitis in sensitive individuals
- Can leave a greasy residue if used in high concentrations
Science: Limited peer-reviewed data available for this ingredient. General knowledge suggests avocado oil is well-tolerated in cosmetic applications, though individual sensitivity varies depending on skin type and formulation concentration.
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Beeswax is a natural wax secreted by honeybees, used in skincare as a protective barrier ingredient. It helps lock in moisture, soften the skin, and create a breathable shield on the skin's surface.
Benefits
- Reduces water loss from skin (occlusive barrier)
- Locks in hydration and soothes dryness
- Softens and conditions skin
- May help with irritated skin conditions like dermatitis and psoriasis
- Natural, low-cost ingredient
Potential concerns
- Potential for contact allergy in sensitive individuals or those with bee product sensitivities
- May feel heavy or occlusive for very oily or acne-prone skin types
Science: Clinical studies demonstrate beeswax supports skin barrier function and helps alleviate symptoms of common skin conditions like dermatitis. However, the evidence base is limited with only five clinical studies reviewed in recent literature, and contact allergy remains a documented concern for some individuals.
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Apricot kernel oil is a natural plant oil extracted from apricot pits. It's rich in fatty acids and vitamin E, making it a lightweight moisturizer that absorbs easily into skin without leaving a greasy residue.
Benefits
- Lightweight hydration and moisture retention
- Rich in antioxidants like vitamin E
- Helps soften and smooth skin texture
Potential concerns
- May cause allergic reactions in people with stone fruit sensitivities
- Can oxidize and become rancid if not stored properly, potentially irritating skin
Science: Limited peer-reviewed data available for this ingredient. General knowledge of plant oils suggests apricot kernel oil is well-tolerated by most skin types, though individual sensitivities vary.
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Sweet almond oil is a natural oil extracted from almond kernels. It's commonly used in skincare products as a moisturizer and emollient to soften and hydrate the skin.
Benefits
- Moisturizes and softens skin
- Gentle emollient suitable for most skin types
- Contains vitamin E and fatty acids that nourish skin
Potential concerns
- May cause allergic reactions in people with tree nut allergies
- Can clog pores in acne-prone individuals
- May leave a greasy residue on sensitive skin
Science: Limited peer-reviewed data available for this ingredient. Almond oil is widely used in traditional skincare and cosmetics, with general recognition as safe for topical use, though individual tolerance varies.
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