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PEI-42

Description

PEI-42, or Polyethyleneimine-42, is a synthetic polymer used in various skincare and cosmetic formulations. This versatile ingredient functions primarily as a film-forming agent and conditioning polymer. Its unique molecular structure allows it to create a thin, uniform layer on the skin or hair surface, providing a smooth feel and enhanced product adherence.

In skincare applications, PEI-42 is valued for its ability to improve the texture and spreadability of formulations. It aids in the even distribution of active ingredients across the skin, potentially enhancing their efficacy. The film-forming properties of PEI-42 can also contribute to a temporary tightening effect on the skin, which may be desirable in anti-aging products.

However, it's important to note that PEI-42 can be sensitizing for some individuals, particularly at higher concentrations. Formulators must carefully balance its benefits with potential risks. The ingredient is typically used in low percentages to minimize irritation while still providing its functional benefits.

PEI-42 is compatible with a wide range of other cosmetic ingredients, making it a versatile choice for formulators. It's commonly found in leave-on skincare products, hair conditioners, and color cosmetics.