Skincare Ingredient
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Peg-8
In Skincare: Is Peg-8 Safe? Comedogenic Rating & Side Effects
Safety Information
Key Benefits
What Peg-8 does for your skin
Overview
Ingredient Profile
Data & Research
Scientific Facts
Common Uses
Formulation in Peg-8
Role of Peg-8
Active Cosmetic Mechanisms
HUMECTANT
Moisture MagnetAttracts and retains moisture in skin and hair
SCIENTIFIC ANALYSIS
// Evidence: Humectant ingredients draw water from the environment and deeper skin layers through hygroscopic properties. Common humectants include glycerin, propylene glycol, hyaluronic acid, urea, and alpha-hydroxy acids. These contain multiple hydroxyl groups or other hydrophilic functional groups that form hydrogen bonds with water molecules. Mechanism involves attracting water to the stratum corneum, reducing transepidermal water loss, and increasing skin hydration.
SOLVENT
Ingredient DissolverDissolves other ingredients to create uniform formulations
SCIENTIFIC ANALYSIS
// Evidence: Solvents dissolve, dilute, or disperse other ingredients creating homogeneous solutions. Water is universal solvent for hydrophilic ingredients. Organic solvents include ethanol (dissolves fragrances, some actives), propylene glycol, and glycerin. Selection based on polarity matching between solvent and solute. Mechanism involves disrupting intermolecular forces in solute and surrounding with solvent molecules. Critical for maintaining ingredient solubility and product stability.
Products
containing Peg-8
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References
Scientific sources
Protein Drugs: Basic Science and Clinical Applications. Milestones in Drug Therapy. Birkhäuser Basel, 2009, pages 127-146
International Journal of Toxicology, Supplement 2, 2006, pages 121-138
Toxicology, October 2005, pages 1-38
Similar Ingredients
Ingredients with similar chemical profiles and skincare properties.
Frequently Asked Questions
Peg-8 — common questions
What is Peg-8 in skincare?
Polyethylene glycols (PEGs) are polymers formed from ethylene glycol. The number following “PEG-” indicates the average number of ethylene glycol units in the polymer chain. For example, PEG-8 contains an average of eight ethylene glycol units. PEGs are available in a wide range of molecular weights, often designated with “M” followed by a number (e.g., PEG-20M indicates an average molecular weight of 20,000). These polymers are commonly found in products such as bath and body care, shaving pre
What does Peg-8 do? / Functions of Peg-8?
Common functions: HUMECTANT, SOLVENT.
What is the comedogenic rating of Peg-8? / Is Peg-8 comedogenic?
Peg-8 has a comedogenic rating of 1 out of 5. A rating of 1 means it is unlikely to clog pores.
Does it clog pores?
Peg-8 is unlikely to clog pores (rating 1/5).
Is Peg-8 safe for skin?
Peg-8 has a safety rating of 2 out of 5. A rating of 2 means it is generally considered safe for most skin types. Note: Generally low hazard humectant solvent; low comedogenicity and low irritation potential. The Cosmetic Ingredient Review (CIR) Expert Panel has assessed PEG-8 as safe for use in cosmetics, noting minim
Is Peg-8 good for sensitive skin?
Peg-8 has an irritancy rating of 1 out of 5. A rating of 1 means it is generally well-tolerated.
What are the side effects of Peg-8 in skincare?
Known considerations: Generally low hazard humectant solvent; low comedogenicity and low irritation potential. The Cosmetic Ingredient Review (CIR) Expert Panel has assessed PEG-8 as safe for use in cosmetics, noting minimal to no risk of skin irritation or comedogenesis based on available data.