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Nordic Skin Peel
Skyn Iceland
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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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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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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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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Lactic acid is a mild chemical exfoliant that works by gently dissolving the bonds between dead skin cells on the surface, helping to slough them away. It's an alpha hydroxy acid (AHA) derived from milk fermentation and is gentler than stronger exfoliants, making it suitable for sensitive skin types.
Benefits
- Gently exfoliates dead skin cells for a smoother texture
- Improves skin radiance and brightness
- Helps reduce the appearance of fine lines and uneven skin tone
- Supports skin hydration by improving moisture absorption
Potential concerns
- Can cause redness, stinging, or irritation, especially at higher concentrations or on sensitive skin
- Increases sun sensitivity — daily SPF is essential when using
- May irritate active acne or compromised skin barrier
- Can cause dryness if overused or not followed with adequate moisturizer
Science: Lactic acid is widely recognized as an effective gentle exfoliant for improving skin texture and hydration. It has a longer history of safe topical use in dermatology compared to stronger AHAs, though it requires proper formulation (typically 5-12% for leave-on products) and concurrent sun protection to minimize irritation risk.
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Sodium Hydroxide is a strong alkaline chemical used in skincare products primarily as a pH buffer to neutralize acids and adjust the product's pH to safe levels for skin. It is not an active skincare ingredient and appears only in trace amounts in finished products.
Potential concerns
- In concentrated form, sodium hydroxide is caustic and can cause severe chemical burns; however, in cosmetic products it is diluted and pH-buffered to safe levels
- Undiluted or highly concentrated sodium hydroxide should never contact skin directly
Science: The provided research discusses sodium hydroxide only in a specialized medical context (10% solution for surgical cauterization of ingrown toenails), which is not relevant to cosmetic skincare use. In properly formulated skincare products, sodium hydroxide is used in minimal concentrations solely for pH adjustment and is considered safe by regulatory bodies including the FDA and EU.
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Analysis not yet available for this ingredient.
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Camellia Sinensis Leaf Extract is derived from green tea leaves and contains natural compounds called catechins and polyphenols. In skincare, it's used for its antioxidant and potential protective properties against environmental damage and bacterial growth.
Benefits
- Antioxidant protection against free radical damage
- May help reduce skin wear and support skin barrier health
- Potential antibacterial and antimicrobial properties
- May help soothe and calm skin
Potential concerns
- May cause mild irritation or sensitivity in very sensitive skin types
- Rare allergic reactions possible in those with tea plant sensitivities
- Limited data on long-term safety in topical skincare formulations
Science: Research shows green tea extract significantly reduces wear and erosion comparable to fluoride treatments and chlorhexidine. Polyphenolic components like theaflavin demonstrate strong antibacterial activity, though most published studies focus on oral health and food safety rather than topical skincare efficacy.
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Analysis not yet available for this ingredient.
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Alcohol (typically ethanol) is a volatile liquid commonly used in skincare products as a preservative, solvent, and to help products dry quickly on skin. It can penetrate the skin barrier and is often included to improve product texture and shelf stability.
Benefits
- Preservative properties that help prevent bacterial and fungal growth
- Quick-drying formula that feels lightweight
- Helps dissolve and distribute other ingredients evenly
Potential concerns
- Can strip skin of natural oils and cause dryness, especially with repeated use
- May irritate sensitive skin or compromise the skin barrier
- Can cause stinging or burning sensation on compromised or reactive skin
- May increase skin sensitivity to sun exposure
Science: Recent cosmetic science literature shows growing interest in alcohol-free formulations due to skin barrier concerns. The provided research focuses on deodorants, noting that alcohol-free alternatives are increasingly preferred in product development, though alcohol remains widely used in skincare for its preservative and solvent functions.
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Alcohol Denat is denatured ethanol (regular alcohol) that has been made undrinkable by adding bitter-tasting substances. It's used in skincare products as a solvent and preservative to help dissolve other ingredients and extend shelf life.
Benefits
- Helps dissolve and blend skincare ingredients together
- Provides preservative function to prevent microbial growth
- Gives products a lightweight, fast-absorbing texture
Potential concerns
- Can be drying or irritating to sensitive skin with repeated use
- May cause stinging if applied to broken skin or open wounds
- High concentrations may trigger irritation in those with sensitive or reactive skin
Science: The Cosmetic Ingredient Review Expert Panel concluded that Alcohol Denat and its various forms are safe as used in cosmetics. Denaturants added to prevent accidental ingestion (such as Denatonium Benzoate) show low systemic absorption and minimal irritation at typical skincare concentrations.
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Lactobacillus Ferment is a byproduct created when beneficial Lactobacillus bacteria are fermented and then processed. It's used in skincare for its potential to support skin balance and calm irritation, particularly in sensitive skin formulations.
Benefits
- May help soothe sensitive or reactive skin
- Supports a balanced skin microbiome
- Can reduce sensations of scalp discomfort and sensitivity
Potential concerns
- Limited effectiveness against certain microorganisms (notably Candida albicans in preservative testing)
- Rare allergic reactions possible in sensitive individuals
Science: Research shows that Lactobacillus ferment complexes can meaningfully modulate scalp microbiome composition and alleviate sensitive scalp symptoms in clinical studies. However, peer-reviewed evidence is currently limited to specialized applications (scalp health), and broader efficacy data for general facial skincare remains sparse.
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Papaya Fruit Extract is derived from the tropical papaya fruit and works as a skin-conditioning agent in skincare products. It contains natural compounds that help soften and smooth the skin's surface.
Benefits
- Helps condition and soften skin
- Contains natural enzymes that may gently exfoliate dead skin cells
- Provides antioxidant properties from fruit compounds
Potential concerns
- May cause irritation or sensitivity in people with latex allergies (cross-reactivity possible)
- Potential for irritation if used in high concentrations
- Quality and potency can vary depending on extraction methods and source
Science: A 2025 safety assessment by the Cosmetic Ingredient Review Expert Panel concluded that Papaya Fruit Extract is safe for cosmetic use at current concentrations and practices. The ingredient functions primarily as a skin-conditioning agent with antioxidant benefits from naturally occurring fruit compounds.
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Witch hazel is a plant extract made from the leaves and bark of the North American witch hazel shrub. It's commonly used in skincare as a gentle astringent and toner that may help reduce excess oil and tighten pores, particularly in formulas designed for oily or acne-prone skin.
Benefits
- May help reduce excess oil and shine
- Mild astringent properties that can make skin feel tighter
- Traditionally used to soothe minor skin irritation
Potential concerns
- Can be drying or irritating if overused, especially on sensitive skin
- Alcohol content in some formulations may cause irritation or dryness
- May cause mild stinging or sensitivity in individuals with reactive skin
Science: Witch hazel contains tannins that are thought to contribute to its astringent properties. Limited peer-reviewed data is available to confirm efficacy for specific skincare benefits, though it has a long history of traditional use in skincare.
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Willow bark extract is a plant-derived ingredient that contains salicin, a compound related to salicylic acid. It's been used traditionally for centuries and is valued in skincare for its gentle exfoliating and skin-clarifying properties.
Benefits
- Gentle exfoliation to remove dead skin cells
- May help reduce the appearance of blemishes and breakouts
- Can provide anti-inflammatory effects to calm irritated skin
Potential concerns
- May cause mild irritation or dryness in sensitive skin
- People allergic to aspirin or salicylates should use cautiously
Science: Limited peer-reviewed data available for this ingredient. Willow bark has been used in traditional medicine for anti-inflammatory purposes, and salicin is structurally related to salicylic acid, but direct clinical efficacy studies in modern cosmetic formulations are sparse.
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Biosaccharide Gum-1 is a natural polymer derived from fermented sugars that works as a thickener and stabilizer in skincare formulas. It helps create a smooth texture and can form a light film on the skin to help retain moisture.
Benefits
- Improves product texture and consistency
- Helps hydrate and retain skin moisture
- Creates a light, breathable protective layer
Science: Limited peer-reviewed data available for this ingredient. Biosaccharide gums are generally recognized as safe cosmetic thickeners with low irritation potential, though comprehensive safety studies specific to Biosaccharide Gum-1 are not widely published.
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