Back to Ingredient Dictionary

Polyethylene

Description

Polyethylene is a versatile synthetic polymer widely used in skincare and cosmetic formulations. As one of the most common plastics globally, its application in dermatological products stems from its unique properties and adaptability. In skincare, polyethylene primarily functions as a thickening agent, emollient, and texture enhancer.

This ingredient forms a protective barrier on the skin's surface, helping to lock in moisture and prevent transepidermal water loss. Its molecular structure allows for smooth application and a silky feel, improving the overall sensory experience of products. Polyethylene is often found in exfoliating scrubs as microbeads, though environmental concerns have led to restrictions on this use in many regions.

Polyethylene's stability and inertness make it resistant to degradation by light, heat, and most chemicals, ensuring product longevity. It's generally considered safe for topical use, with a low risk of skin irritation or allergic reactions. However, its non-biodegradable nature has raised environmental concerns, prompting the development of alternative, more eco-friendly options in recent skincare formulations.