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PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin and How is it Used in Cosmetics?

PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin is a multi-functional synthetic polymer blend often used in advanced cosmetic formulations. It serves as a moisturizing humectant, solubilizer, and skin-conditioning agent, making it ideal for products that require improved texture, enhanced hydration, and better absorption of water-insoluble ingredients.

Thanks to its unique ratio of polyethylene glycol (PEG), polypropylene glycol (PPG), polybutylene glycol, and glycerin, this ingredient provides a non-sticky, silky skin feel while enhancing the delivery of active ingredients, including retinol, salicylic acid, and some botanical extracts.

PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin Technical Details and Characteristics

  • INCI Name: PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin

  • Appearance: Clear, viscous liquid

  • Solubility: Water-soluble and miscible with alcohols

  • Recommended Usage Rate: 1–10%

  • pH Stability: Stable across a wide range (3–10)

  • Function:

    • Humectant

    • Emollient

    • Solubilizer

    • Penetration enhancer

  • Key Properties:

    • Provides long-lasting moisturization without tackiness

    • Improves solubility of oil-based actives in water-based systems

    • Enhances product spreadability and skin glide

  • Compatibility: Compatible with most surfactants, oils, acids, esters, and alcohols; stable in both emulsions and gels

How to Incorporate PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin into Formulations

  • Phase: Add during the cool-down phase or post-emulsification

  • Temperature: Heat stable up to 80°C, but ideally added under 60°C to preserve sensitive actives

  • pH Consideration: No adjustment usually necessary; remains stable in acidic to neutral pH

  • Best Practices:

    • Can be used to solubilize active ingredients into aqueous or gel bases

    • Improves active delivery in hydroalcoholic solutions or surfactant systems

    • Recommended for formulations needing a smooth, lubricious skin afterfeel

Where PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin is Found in Skincare Products

Commonly found in:

  • Hydrating serums and gels

  • Makeup primers and foundations

  • Anti-aging creams with retinoids or peptides

  • Acne treatments using BHA or azelaic acid

  • Micellar waters or makeup removers

It’s especially popular in leave-on treatments that aim to deliver actives effectively while maintaining a lightweight, non-greasy texture.