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Peel Off Line & Shine Lip Duo
Ingredients
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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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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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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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Polyvinyl alcohol (PVA) is a synthetic polymer derived from polyvinyl acetate. In skincare, it's primarily used as a film-forming agent that creates a thin, breathable layer on the skin to improve product texture, adhesion, and delivery of active ingredients.
Benefits
- Creates a smooth, non-sticky finish on skin
- Improves product adhesion and wear time
- Supports controlled release of active skincare ingredients
- Biodegradable and generally well-tolerated by skin
Science: Research demonstrates PVA's effectiveness as a biocompatible polymer matrix for transdermal delivery systems and wound care applications. Its ability to dissolve rapidly on skin and form stable films makes it suitable for both therapeutic skincare delivery and cosmetic formulations, with no reported safety concerns in topical use.
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Polyisobutene is a synthetic polymer used as an emollient and skin-conditioning agent in moisturizers and creams. It forms a protective layer on the skin that helps lock in moisture and improve texture.
Benefits
- Reduces water loss from skin (by up to 33% in studies)
- Improves skin hydration and moisturization
- Enhances skin texture and smoothness
- Long-lasting moisturizing effect
- Pleasant, non-greasy feel on skin
Science: Clinical research shows hydrogenated polyisobutene significantly increases skin moisture content and reduces transepidermal water loss, with effects maintained for at least 6 hours. It performed 5-10% better than comparable emollient esters in moisturization studies, suggesting strong efficacy with minimal irritation potential.
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Diisostearyl Malate is an emollient and texture-enhancing ingredient derived from malic acid and isostearyl alcohol. It's used in cosmetics to create a smooth, silky feel and improve product spreadability on skin.
Benefits
- Creates a smooth, silky texture in formulations
- Helps improve product spreadability and application
- Provides emollient properties for skin conditioning
Potential concerns
- Potential for contact dermatitis in sensitive individuals, particularly linked to trace impurities (isostearyl alcohol) rather than the ingredient itself
- May cause lip irritation in lip care products in susceptible people
Science: A 1987 case study documented contact dermatitis from this ingredient in lipstick, though the reaction was traced to specific impurities (isostearyl alcohol) present in the material rather than the pure ingredient itself. Limited additional peer-reviewed safety data is available for this ingredient.
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