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PEG

Description

PEG, or Polyethylene Glycol, is a versatile synthetic compound widely used in skincare and cosmetic formulations. This water-soluble polymer is derived from ethylene oxide and functions as an effective humectant, emollient, and penetration enhancer. PEG comes in various molecular weights, denoted by numbers (e.g., PEG-100, PEG-400), which influence its properties and applications.

In skincare, PEG primarily acts as a moisturizing agent, attracting and retaining water to hydrate the skin. It also serves as an emulsifier, helping to blend oil and water-based ingredients, creating stable and smooth formulations. PEG's ability to enhance the penetration of other active ingredients makes it valuable in delivering beneficial compounds deeper into the skin.

While generally considered safe for topical use, PEG can potentially cause irritation in individuals with sensitive skin. It's important to note that PEG's penetration-enhancing properties may also increase the absorption of other ingredients, including potential irritants. Formulators must consider this when developing products for different skin types and concerns. Despite some controversy regarding its production process and potential contamination, purified PEG remains a common and effective ingredient in many skincare products.