Ingredients
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Analysis not yet available for this ingredient.
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Butylene glycol is a humectant—a type of ingredient that draws water into the skin and helps it stay hydrated. It's a small, lightweight molecule commonly used in moisturizers to improve hydration without leaving a heavy feel on the skin.
Benefits
- Increases skin hydration and moisture retention
- Lightweight and absorbs quickly
- Helps other active ingredients penetrate the skin more effectively
Science: Research demonstrates that butylene glycol, when combined with other humectants (like glycerin and hyaluronic acid) and occlusive ingredients in moisturizers, significantly improves skin hydration in both healthy skin and compromised skin conditions such as atopic dermatitis. It is recognized as a safe, effective humectant in dermatological formulations.
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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.
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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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Tromethamine is a pH buffer and alkalizing agent used in skincare formulations to neutralize acids and maintain skin-friendly pH levels. It's not typically a featured active ingredient but rather a behind-the-scenes helper that stabilizes product formulations.
Benefits
- Helps maintain optimal pH balance in skincare products
- Stabilizes formulations containing acidic actives like retinoids or vitamin C
- Allows safer delivery of potent ingredients without excess irritation
Potential concerns
- Limited data on direct skin effects as a standalone ingredient
- Generally used at low concentrations, minimizing irritation risk
- May cause irritation if formulation pH becomes too alkaline
Science: The provided literature focuses on tromethamine's use as a pain-relief agent in ophthalmic settings rather than skincare applications. Limited peer-reviewed data is available specifically for its use in topical cosmetic formulations, though it is recognized as a safe, FDA-approved buffer agent in pharmaceutical and cosmetic products.
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Hexylene glycol is a lightweight humectant and preservative booster used in skincare products to help retain moisture and improve product stability. It also enhances the penetration of other active ingredients into the skin.
Benefits
- Helps skin retain moisture
- Improves product texture and spreadability
- Enhances effectiveness of preservative systems
Potential concerns
- May cause mild irritation or redness in sensitive individuals (occurs in roughly 3% of eczema-prone skin)
- Potential for delayed allergic contact reactions in susceptible people, though this is uncommon
- Less irritating than propylene glycol under occlusion, but still worth avoiding if you have known sensitivities to glycols
Science: A 1989 study found hexylene glycol caused visible skin reactions in 2.8% of eczema patients at high concentrations (30-50%), with potential for delayed allergic sensitization in rare cases. It was less irritating than propylene glycol. One case report mentions hexylene glycol as a potential allergen in medical formulations, though reactions are uncommon at typical cosmetic concentrations.
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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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Carbomer is a thickening agent and stabilizer that gives skincare products their gel-like texture. It helps create a smooth, spreadable consistency and can hold active ingredients in place on the skin for better absorption.
Benefits
- Creates a smooth, easy-to-apply gel texture
- Helps stabilize and thicken formulations
- Can improve how long active ingredients stay on the skin
- Allows better delivery of beneficial compounds into deeper skin layers
Potential concerns
- Can occasionally cause irritation or sensitivity in very reactive skin types
- Requires proper pH adjustment in formulations (formulators use this, not consumers)
Science: Research shows carbomer is commonly used as a gel base in advanced skincare delivery systems, including those designed for anti-inflammatory and healing treatments. Studies indicate it effectively works with active ingredients like nanoparticles and botanical extracts to improve their penetration and efficacy on skin.
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Tetrasodium EDTA is a chelating agent that binds to minerals (like calcium and magnesium) in skincare formulations. It's used to improve product stability, preserve texture, and prevent unwanted chemical reactions that can degrade the formula over time.
Benefits
- Stabilizes skincare formulations and extends shelf life
- Prevents discoloration and separation in products
- Helps other active ingredients work more effectively
Potential concerns
- May increase skin penetration of other ingredients—formulators should carefully assess what it's combined with
- Not absorbed through intact skin, but inhalation from sprays should be avoided
- Generally safe at typical use levels (under 2%), but not intended for ingestion
Science: The Cosmetic Ingredient Review Expert Panel confirmed tetrasodium EDTA is safe in cosmetic formulations at standard concentrations (typically under 2%), based on studies showing no skin absorption and systemic exposure well below toxic thresholds. The main consideration is that it can enhance penetration of other ingredients, so product formulation matters.
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Polysorbate 80 is an emulsifier that helps mix oil and water-based ingredients together in skincare products. It's a synthetic compound derived from sorbitol (a sugar alcohol) and is widely used in cosmetics, pharmaceuticals, and food products to create stable, smooth textures.
Benefits
- Enables smooth blending of oil and water ingredients
- Improves product texture and spreadability
- Helps stabilize formulations
Potential concerns
- Rare but documented risk of allergic reactions or hypersensitivity in susceptible individuals, particularly those with sensitivities to polyethylene glycol (PEG) compounds
- May cause contact dermatitis or irritation in people with sensitive skin
Science: Research indicates polysorbate 80 can trigger immediate hypersensitivity reactions in some individuals, with cross-reactivity possible with related compounds like polyethylene glycols. However, such reactions are uncommon in topical skincare applications compared to intravenous pharmaceutical use. The ingredient has a long history of safe use in cosmetics when applied to skin at typical concentrations.
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