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a.m. Sunday Hydrogel Eye Patch with Collagen Water
KOCOSTAR
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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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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Caffeine is a natural alkaloid compound that penetrates the skin barrier and is commonly used in skincare products, typically at 3% concentration. It works by stimulating blood flow, reducing puffiness, and protecting skin cells from damage caused by free radicals and UV exposure.
Benefits
- Reduces under-eye puffiness and swelling by improving blood circulation
- Provides antioxidant protection against UV damage and premature aging
- May help break down fat cells and improve the appearance of cellulite
- Activates cellular repair processes that protect against oxidative stress and aging
Potential concerns
- May cause mild irritation or sensitivity in individuals with caffeine sensitivity
- Can cause temporary redness or tingling when applied topically
- Limited evidence for dramatic anti-cellulite results in real-world use
Science: Research shows caffeine effectively penetrates skin and activates autophagy (cellular cleanup) to combat oxidative stress and cellular aging, particularly from UV exposure. Studies demonstrate it inhibits fat accumulation and improves microcirculation, though most evidence comes from controlled lab and animal studies rather than large human trials.
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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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Tocopheryl acetate is a stable form of vitamin E, a fat-soluble antioxidant that helps protect skin from damage caused by free radicals and oxidative stress. It's commonly used in skincare products because it's more shelf-stable than other vitamin E forms and may help support the skin's natural barrier function.
Benefits
- Antioxidant protection against environmental damage
- Supports skin barrier health
- Stable ingredient with good shelf life in formulations
Science: Tocopheryl acetate is a well-established vitamin E ester that the body converts to free vitamin E for use. Research shows it functions as a lipid-soluble antioxidant; one recent study found it contributed to a moisturizer's beneficial effects on skin microbiota balance in atopic dermatitis models, though more direct clinical evidence on topical efficacy is limited.
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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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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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Hydrolyzed hyaluronic acid is a smaller, broken-down form of hyaluronic acid—a naturally occurring substance that holds moisture in skin. The smaller molecular size allows it to penetrate the outer layers of skin more easily than regular hyaluronic acid, potentially delivering hydration deeper into the skin.
Benefits
- Enhanced skin hydration due to smaller molecular size and better penetration
- Helps plump and soften the appearance of fine lines
- Lightweight and suitable for layering with other skincare products
Science: Hydrolyzed hyaluronic acid is well-established in skincare for its hygroscopic properties (ability to attract and retain water). The cited research focuses on its use in advanced delivery systems like microneedles for pharmaceuticals and cosmetics, demonstrating its compatibility with sophisticated formulation technologies, though direct efficacy studies on topical application are limited in the provided literature.
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Sodium Hyaluronate Crosspolymer is a modified form of hyaluronic acid, a naturally occurring substance that holds moisture in skin. The crosslinked version is designed to stay on the skin's surface longer and provide sustained hydration, rather than absorbing deeply like standard hyaluronic acid.
Benefits
- Provides long-lasting hydration and moisture retention
- Creates a smoother skin feel and texture
- Helps plump fine lines temporarily through moisture
Science: Limited peer-reviewed data available for this specific crosslinked variant. Standard sodium hyaluronate has an extensive safety record as a humectant in skincare, and crosslinking is a common cosmetic chemistry technique to alter performance characteristics.
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Panthenol is a lightweight humectant derived from pantothenic acid (vitamin B5) that draws moisture into the skin and helps maintain hydration. It also supports the skin barrier and can help soothe irritation, making it a popular choice in products designed for sensitive or compromised skin.
Benefits
- Hydrates and moisturizes the skin
- Helps calm and soothe irritated or sensitive skin
- Supports skin barrier function and repair
- Lightweight and non-greasy
Science: Panthenol is one of the few ingredients in sensitive skin formulations with clinical evidence specifically tested on volunteers with sensitive skin. Research confirms it reduces skin inflammation and supports barrier function, though comprehensive clinical studies on this ingredient remain limited compared to some alternatives.
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Chlorphenesin is a synthetic preservative used in skincare products to prevent bacterial and fungal growth, extending shelf life. It's a broad-spectrum antimicrobial agent that helps keep products safe from contamination during storage and use.
Benefits
- Prevents microbial contamination in skincare formulations
- Extends product shelf life
- Allows formulas to remain stable without refrigeration
Potential concerns
- May cause irritation to sensitive eyes and eye area when present in eye products
- Degrades under UV exposure, potentially creating more harmful breakdown products
- Limited long-term safety data in peer-reviewed literature
Science: Research shows chlorphenesin can be toxic to eye tissue cells at approved concentrations, particularly affecting meibomian glands. When exposed to sunlight, it breaks down into compounds like 4-chlorophenol that may be more ecotoxic than the original ingredient, though systemic absorption in skincare is typically minimal.
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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.
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2-Hexanediol is a humectant and preservative booster commonly used in skincare products to help retain moisture and extend shelf life. It works by drawing water into the skin while also enhancing the effectiveness of other preservatives, allowing brands to use lower amounts of traditional preservatives.
Benefits
- Hydrates and moisturizes skin by drawing in water
- Helps preserve products with lower preservative levels
- Works synergistically with other skincare ingredients like niacinamide
Potential concerns
- May cause cell viability concerns at concentrations above 1.0% in laboratory studies
- Limited real-world safety data in humans at typical skincare concentrations (usually 2-5%)
- Potential environmental concern if released into water systems
Science: While 2-hexanediol is widely used as a preservative substitute for parabens, recent cytotoxicity studies raise questions about safety at concentrations commonly found in skincare products (>2%). However, these findings are from laboratory cell studies and may not directly translate to human skin application. Further human safety studies are needed to confirm real-world risk.
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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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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.
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Sodium phytate is a naturally derived ingredient that acts as a chelating agent, binding to minerals and metals on the skin's surface. In skincare, it's primarily studied for its potential brightening and clarifying properties, though research in this area remains limited.
Benefits
- May help brighten skin appearance
- Potential mild exfoliating or clarifying effect
- Naturally derived ingredient
Potential concerns
- Very limited safety data in skincare applications
- Chelating agents can potentially disrupt skin barrier minerals if used excessively
- Most research focuses on dental use rather than facial skincare
Science: Available research on sodium phytate focuses primarily on dental whitening toothpaste rather than skincare products. One 2025 clinical trial showed modest whitening effects in toothpaste formulations over 3-4 weeks, but efficacy plateaued. Peer-reviewed safety and efficacy data specifically for facial skincare use is limited.
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Adenosine is a naturally occurring compound found in all living cells that plays a role in skin cell energy production and communication. In skincare, it's used to help support skin barrier function and may promote a smoother, more resilient complexion.
Benefits
- Supports skin barrier strength and integrity
- May help reduce the appearance of fine lines and wrinkles
- Promotes skin cell energy metabolism and repair
Science: Research indicates adenosine and related compounds (like cyclic adenosine monophosphate) regulate skin barrier formation and epidermal differentiation. While direct clinical studies on topical adenosine in skincare are limited, the ingredient's role in cellular energy and barrier maintenance is well-established in dermatological literature.
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Betaine is a naturally occurring compound found in plants like sugar beets and rice that helps skin retain moisture. In skincare products, it works as a humectant to draw water into the skin and maintain hydration.
Benefits
- Hydrates and moisturizes skin
- Helps skin retain water
- May have anti-inflammatory properties
- Generally non-irritating and well-tolerated
Science: Research indicates betaine (particularly in combination with polyhexanide) is nontoxic and well-tolerated in topical applications. Studies on rice-derived betaine show it is safe, non-irritating, and hypoallergenic, with potential anti-inflammatory and moisturizing benefits for skin.
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Dipotassium Glycyrrhizate is a potassium salt derived from licorice root that functions as a skin-conditioning agent. It's used in skincare products to help soothe and support skin clarity, and has been studied as part of formulations targeting uneven skin tone.
Benefits
- May help reduce the appearance of dark spots and hyperpigmentation
- Gentle skin-conditioning properties
- Well-tolerated in cosmetic formulations with minimal irritation risk
Science: A 2022 clinical study found that a serum containing dipotassium glycyrrhizate (along with other actives) showed statistically significant improvement in melasma with no signs of irritation over 12 weeks. The ingredient is approved by the Cosmetic Ingredient Review panel for use at concentrations up to 1%, with safety data showing it does not absorb significantly into tissues.
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Hydrolyzed Sodium Hyaluronate is a smaller, broken-down form of hyaluronic acid that penetrates skin more easily than its larger counterpart. It works as a humectant, drawing moisture from the environment into your skin to keep it hydrated and plump.
Benefits
- Deep hydration and moisture retention
- Improved skin plumpness and elasticity
- Lightweight texture that absorbs quickly
Science: Hyaluronic acid and its derivatives are well-established humectants with extensive safety data and a long history of use in cosmetics. Limited peer-reviewed data available specifically for the hydrolyzed sodium form, but it follows the same safety profile as other hyaluronic acid derivatives.
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Carob gum is a natural thickener derived from carob tree seeds that helps give skincare products a smooth, creamy texture. It absorbs and holds water in formulations, which can help keep skin hydrated and improve how the product feels on your skin.
Benefits
- Thickens and stabilizes product texture
- Helps retain moisture in skin
- Mild soothing properties
Science: Limited peer-reviewed data available for this ingredient. Carob gum is recognized as safe by regulatory bodies and has a long history of use in food and cosmetics with minimal reports of irritation or sensitization.
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Macadamia ternifolia seed oil is a lightweight, nutrient-rich plant oil extracted from macadamia nuts. It's used in skincare to moisturize and soften the skin while absorbing relatively quickly without leaving a greasy residue.
Benefits
- Moisturizes and hydrates skin
- Rich in fatty acids that support skin barrier function
- Absorbs well without heavy residue
- May help improve skin texture and softness
Science: Limited peer-reviewed data available for this ingredient. Macadamia oil is generally recognized as safe for topical use and is well-tolerated by most skin types, though individual sensitivities to tree nut oils are possible in rare cases.
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Collagen Extract is a protein derived from animal sources (such as fish skin or animal hooves) that is added to skincare products for its hydrating and skin-conditioning properties. It functions as a humectant, helping to attract and retain moisture in the skin.
Benefits
- Improves skin hydration and moisture retention
- Provides emulsifying and stabilizing properties to formulations
- May support skin firmness and elasticity through hydration
Potential concerns
- Topical collagen cannot penetrate skin to rebuild collagen — it works only as a surface moisturizer
- May not be suitable for vegan consumers depending on source
- Potential allergen for those with sensitivities to fish or animal-derived ingredients
Science: Research confirms collagen extract effectively hydrates skin when applied topically and is well-tolerated at typical cosmetic concentrations. However, the large molecular size of collagen prevents it from penetrating the skin barrier; benefits are limited to surface-level moisture and feel rather than deep structural changes.
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Sodium acetylated hyaluronate is a modified form of hyaluronic acid, a naturally occurring compound that holds moisture in skin. This version is chemically altered to help protect your skin's structural proteins (collagen) from breaking down, potentially reducing the appearance of wrinkles over time.
Benefits
- May reduce the appearance of fine lines and wrinkles with regular use (2+ months)
- Provides immediate smoothing effect on skin texture within 6 hours of application
- Helps protect collagen from degradation caused by aging and environmental damage
- Supports skin hydration through moisture-binding properties
Science: A 2022 peer-reviewed study demonstrated that sodium acetylated hyaluronate inhibits matrix metalloproteinases (MMPs)—enzymes that break down collagen—in both young and aged skin exposed to UV and pollution. Clinical trials showed measurable reduction in wrinkle depth and number after 2 months of use, with visible smoothing effects visible within 6 hours.
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Chondrus Crispus Powder, also known as Irish moss, is a dried seaweed ingredient rich in natural polysaccharides and minerals. In skincare, it's used primarily for its hydrating and thickening properties, helping to moisturize the skin and improve product texture.
Benefits
- Hydration and moisture retention
- Natural thickening agent for creams and lotions
- Contains minerals like iodine, potassium, and magnesium
Potential concerns
- May cause irritation in individuals with iodine sensitivity or thyroid conditions
- Potential for allergic reactions in those with seaweed sensitivities
- Quality and contamination can vary depending on sourcing
Science: Limited peer-reviewed data available for this ingredient in cosmetic formulations. Traditional use in skincare is well-established, but modern efficacy studies in topical applications are sparse.
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Hyaluronic acid is a naturally occurring molecule found in your skin that acts like a sponge, holding water to keep skin hydrated and plump. In skincare products, it helps improve skin moisture, reduce the appearance of fine lines, and support overall skin texture and firmness.
Benefits
- Boosts skin hydration and moisture retention
- Helps reduce the appearance of fine lines and wrinkles
- Supports skin firmness and elasticity
- Well-tolerated and safe for most skin types
- May enhance effects of other anti-aging treatments
Science: Multiple clinical studies confirm hyaluronic acid is highly effective and well-tolerated for improving skin hydration and signs of aging. Research shows it works as an effective standalone treatment and also enhances results when combined with other anti-aging procedures, with benefits sustained over extended use periods.
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Potassium hyaluronate is the potassium salt form of hyaluronic acid, a naturally occurring substance found in skin and connective tissue. In skincare, it works as a humectant—drawing moisture from the air and deeper skin layers to the surface—helping skin feel plump and hydrated.
Benefits
- Increases skin hydration and moisture retention
- Helps skin appear smoother and more plump
- Lightweight and suitable for most skin types, including oily and sensitive skin
Science: A 2009 Cosmetic Ingredient Review safety assessment concluded that potassium hyaluronate is safe for use in cosmetics at concentrations up to 2%, with no evidence of toxicity, allergenicity, or reproductive harm across multiple animal and clinical studies. Widespread clinical use, particularly via injection, has shown a strong safety profile with minimal adverse reactions.
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This is a modified form of hyaluronic acid, a naturally occurring substance that holds water in the skin. The modification (adding a hydroxypropyltrimonium coating) makes it positively charged, allowing it to bind more effectively to skin and hair. It works as a humectant, drawing moisture into the skin for a hydrating effect.
Benefits
- Hydrates and plumps skin by attracting and holding water
- May provide longer-lasting hydration compared to unmodified hyaluronic acid
- Helps improve skin texture and smoothness
Science: Limited peer-reviewed data available for this specific ingredient. However, it is derived from hyaluronic acid, which has extensive safety and efficacy data in cosmetics, and the chemical modification is designed to improve performance rather than create safety concerns.
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PEG-60 Hydrogenated Castor Oil is a gentle emulsifier and solubilizer derived from castor oil. It helps blend oil and water-based ingredients together and can improve how skincare products feel on the skin.
Benefits
- Helps create stable, smooth-textured formulations
- Improves product spreadability and absorption
- Allows active ingredients to be better distributed throughout products
Science: Scientific safety reviews have determined that PEG-60 hydrogenated castor oil is safe for cosmetic use at concentrations up to 100%. Research demonstrates it is well-tolerated in skincare formulations and is commonly used in nanoemulsion technology for delivering plant extracts and other active ingredients.
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Cetyl ethylhexanoate is a lightweight oil derived from natural sources that functions as a skin-conditioning agent and emollient in skincare formulations. It helps soften and smooth the skin while also serving as a functional component that stabilizes emulsions and improves product texture.
Benefits
- Softens and conditions skin
- Improves product texture and spreadability
- Helps stabilize emulsions for better product performance
- Lightweight feel without heaviness
Potential concerns
- When formulated incorrectly, products containing this ingredient may cause irritation; formulations should be tested to ensure non-irritating concentrations
- Generally safe at typical use levels (up to 52% in leave-on products like lipsticks, and 77.3% in rinse-off formulations)
Science: The Cosmetic Ingredient Review Expert Panel concluded this ingredient is safe in cosmetic formulations at current use levels when properly formulated to be non-irritating. Recent research (2024) demonstrates its role in advanced emulsion technology, where it helps create stable, thickened skincare products with enhanced cleansing and usability properties.
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Analysis not yet available for this ingredient.
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