What is Polyaminopropyl Biguanide used for in cosmetics?

Polyaminopropyl Biguanide is primarily used as a preservative in cosmetics to prevent the growth of harmful microorganisms like bacteria and fungi, thereby extending the product's shelf life and ensuring consumer safety.

Is Polyaminopropyl Biguanide safe for sensitive skin?

While generally considered safe at low concentrations, some individuals with sensitive skin may experience irritation or allergic reactions. Patch testing is recommended if you have known sensitivities.

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Polyaminopropyl Biguanide

Also known as: PHMB

Polyaminopropyl Biguanide is a synthetic polymer used as a broad-spectrum preservative in cosmetic and personal care products. It helps prevent the growth of bacteria, yeasts, and molds, ensuring product safety and shelf life. Its effectiveness is due to its ability to disrupt microbial cell membranes.

PreservativeVegan

BenefitNone 0 / 4

RiskModerate 1.5 / 4

Sensitization i1.5 / 4

Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.

Irritation i1.5 / 4

Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.

Rated by SpottyLabs' ingredient methodology, independent of brands.

Things to watch

Potential skin irritation or sensitization in some individuals
Concerns regarding environmental impact

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Products with Polyaminopropyl Biguanide

göt2b

Glued Styling Spiking Glue

3/ 55/11/9

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Frequently asked questions

What is Polyaminopropyl Biguanide used for in cosmetics?: Polyaminopropyl Biguanide is primarily used as a preservative in cosmetics to prevent the growth of harmful microorganisms like bacteria and fungi, thereby extending the product's shelf life and ensuring consumer safety.
Is Polyaminopropyl Biguanide safe for sensitive skin?: While generally considered safe at low concentrations, some individuals with sensitive skin may experience irritation or allergic reactions. Patch testing is recommended if you have known sensitivities.