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Toleriane Dermallergo Eye Cream Repair Moisturizer for Dry Skin
La Roche-Posay
$30.99
View Product ↗Ingredients
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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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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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Citric acid is a naturally occurring organic acid commonly used in skincare products as an exfoliant and pH balancer. It belongs to a group of ingredients called alpha-hydroxy acids (AHAs) that help remove dead skin cells from the surface.
Benefits
- Gentle exfoliation to improve skin texture and appearance
- Helps reduce the appearance of keratosis and acne
- Balances product pH to maintain skin compatibility
Potential concerns
- Can cause irritation, redness, or sensitivity in some users, especially with prolonged or frequent use
- May increase sun sensitivity — sunscreen use is recommended when using AHA products
- Not suitable for very sensitive or compromised skin without caution
Science: Citric acid is an established AHA used in cosmetics for superficial peeling and skin appearance improvement, though research emphasizes that caution should be exercised due to potential adverse reactions. It is widely produced industrially and well-established in skincare formulations.
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Propanediol is a lightweight humectant—a molecule that draws water into the skin to keep it hydrated. It's also used in cosmetic formulations as a solvent and preservative booster, helping products stay stable and feel smooth on the skin.
Benefits
- Hydrates and moisturizes the skin
- Improves product texture and spreadability
- Helps preserve formulations naturally
Science: Propanediol can be produced through bio-based fermentation (from glycerol using microorganisms), making it an environmentally friendly alternative to traditional chemical synthesis. It is widely recognized as safe in cosmetic and food applications, with established use as both a humectant and preservative enhancer.
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Polysorbate 20 is a mild emulsifier and solubilizer commonly used in skincare products to help mix oil and water-based ingredients together and keep them stable. It's also used to help dissolve fragrance and active ingredients evenly throughout a formula.
Benefits
- Helps create stable, smooth textures by blending incompatible ingredients
- Improves product consistency and shelf life
- Allows even distribution of active ingredients and fragrance
Potential concerns
- May cause irritation or allergic reactions in people with sensitive skin
- Can occasionally strip skin's natural oils if used in high concentrations
- Some individuals report sensitivity to polysorbates, though this is relatively uncommon
Science: The provided study examined polysorbate 20 as a formulation component in a clinical cancer treatment (vidutolimod), not as a cosmetic ingredient. Limited peer-reviewed data exists specifically evaluating polysorbate 20 safety in topical skincare; however, it is widely used globally and recognized as safe by major regulatory bodies (FDA, EU) at typical cosmetic concentrations (typically under 5%).
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Trisodium Ethylenediamine Disuccinate is a chelating agent, which means it binds to trace metals in cosmetic formulas to keep products stable and prevent discoloration or degradation. It's used in small amounts primarily to maintain product quality rather than directly benefit your skin.
Benefits
- Extends product shelf life
- Prevents oxidation and discoloration
- Improves formula stability
Science: Limited peer-reviewed data available for this ingredient. It is approved for cosmetic use under EU and US regulations as a chelating agent and is considered safe at the low concentrations used in skincare formulations.
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Pentylene glycol is a lightweight humectant—a ingredient that draws water into the skin to improve hydration and texture. It's commonly used in serums, sunscreens, and moisturizers as a preservative booster and skin-conditioning agent.
Benefits
- Improves skin hydration by attracting moisture
- Lightweight feel, absorbs quickly without heaviness
- Helps preserve product stability and extends shelf life
Potential concerns
- Rare contact allergy reported in sensitive individuals
- Emerging evidence suggests it may be an uncommon cosmetic allergen—if you have sensitive or reactive skin, patch test first
Science: Safety studies show a high margin of safety at standard use levels (87–671 in adults), with minimal skin penetration due to the ingredient's volatility. However, recent dermatological reports flag pentylene glycol as an emerging contact allergen in some individuals, warranting attention for those with sensitive skin.
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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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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.
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Analysis not yet available for this ingredient.
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This is a synthetic polymer used primarily as a thickener and stabilizer in skincare formulations. It helps create a smooth, gel-like texture and keeps product ingredients from separating over time.
Benefits
- Creates smooth, pleasant texture
- Stabilizes product formulation
- Helps products spread evenly on skin
Science: Limited peer-reviewed data available for this ingredient. It is a large polymer molecule not typically absorbed through the skin, making systemic concerns unlikely, though individual sensitivities to synthetic polymers are possible.
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Analysis not yet available for this ingredient.
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Hydroxyacetophenone is a naturally derived compound with antioxidant and antimicrobial properties. It's used in skincare products to help protect skin from environmental stress and maintain product freshness.
Benefits
- Antioxidant protection against free radicals
- Antimicrobial and antiseptic properties
- May help preserve product stability
Science: Research shows hydroxyacetophenone has demonstrated antioxidant, antibacterial, and antiseptic activities in cosmetic and pharmaceutical applications. However, peer-reviewed data specifically evaluating its safety profile and efficacy in topical skincare products for consumers is limited.
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Cellulose is a natural plant-derived polymer that acts as a thickener and structural support in skincare formulas. In skincare products like masks and serums, it forms a porous matrix that helps hold water and active ingredients on the skin, improving hydration and product delivery.
Benefits
- Increases skin hydration and moisture retention
- Improves product adhesion and allows for better delivery of active ingredients
- Biocompatible and well-tolerated by skin
- Supports the formation of masks and gel-like textures
Science: Research shows bacterial cellulose membranes significantly improve skin moisture, with one study demonstrating a 76% increase in hydration in most volunteers. Cellulose's highly porous nanostructure allows rapid incorporation and release of cosmetic actives, making it an effective support material for skincare applications.
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Acetyl Dipeptide-1 Cetyl Ester is a peptide-derived ingredient designed specifically to calm and protect sensitive skin. It works by targeting the underlying molecular causes of skin sensitivity, helping to reduce uncomfortable reactions to everyday irritants.
Benefits
- Reduces skin sensitivity and reactive responses
- Strengthens the skin barrier
- Calms inflammation
- Helps minimize discomfort from irritants
Science: Clinical research specifically tested this ingredient on volunteers with sensitive skin, showing targeted action on molecular pathways involved in skin sensitivity. It is among a limited group of ingredients in sensitive skin products with evidence directly supporting use in reactive skin conditions.
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This is a synthetic polymer (plastic-like material) used as a film-former and thickener in skincare products. It helps create a smooth texture, improves product consistency, and can form a light protective layer on the skin's surface.
Benefits
- Creates smooth, even product texture
- Helps products spread easily on skin
- Provides lightweight film-forming properties
Science: Limited peer-reviewed data available for this ingredient. It is a synthetic polymer generally recognized as safe in cosmetic formulations and is not known to be a skin irritant or sensitizer at typical use levels.
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Sphingomonas Ferment Extract is a fermented bacterial ingredient that acts as a skin-conditioning agent and potential immune booster. It's created by fermenting Sphingomonas bacteria and is used in skincare to support the skin barrier and promote a healthy complexion.
Benefits
- May support skin barrier function
- Potential anti-inflammatory properties
- Could help improve skin resilience
Science: Limited peer-reviewed data available for this ingredient. Fermented bacterial extracts are generally recognized as safe in cosmetics, though specific efficacy and mechanism studies for Sphingomonas Ferment Extract are not well-documented in published literature.
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Analysis not yet available for this ingredient.
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Analysis not yet available for this ingredient.
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