Polyamide-5
INCI: POLYAMIDE-5
Reviewed by Rosie · Last updated 14 Aug 2026
A synthetic polymer that conditions and smooths the skin surface
Best For Skin Types
All, Oily, Combination
Addresses
Usage Frequency
Daily
What Is Polyamide-5?
Polyamide-5 is a synthetic polymer derived from petrochemical sources. In skincare formulations, it functions as a skin conditioning agent, meaning it is designed to improve the feel, appearance and texture of the skin.
This ingredient works by forming a lightweight film on the skin's surface. It does not penetrate deeply into the dermis, but rather sits on the outer layers to create a smoother, more refined appearance.
How It Works
Polyamide-5 functions as an occlusive film-former. When applied to the skin, it deposits a microscopically thin layer that smooths the skin surface and helps to temporarily fill in surface irregularities. This optical effect can make skin appear more refined and even-toned.
Because it sits primarily on the outer layers of skin rather than being absorbed, its benefits are largely cosmetic and temporary. It may also help to reduce transepidermal water loss, contributing to a conditioning effect.
Clinical Evidence & References
Published clinical data specifically examining polyamide-5 in isolation is limited. Most evidence comes from cosmetic chemistry literature and formulation studies rather than dedicated human efficacy trials.
Polymers of this type are well-established in cosmetic formulations and are generally recognised as safe for topical use. Their conditioning and texturising effects are supported by their widespread use and consumer feedback, though robust clinical studies comparing this ingredient to alternatives would strengthen the evidence base.
How to Use
Polyamide-5 is typically found in primers, foundations, powders and other texture-focused products rather than serums or essences. Because it works as a surface treatment, it is most effective when applied to clean, prepped skin. It pairs well with moisturisers and can be layered under other skincare and makeup products.
Safety & Precautions
Frequently Asked Questions
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