Hydrogenated Polyisobutene=

Hydrogenated Polyisobutene (INCI name: Hydrogenated Polyisobutene) is a high-purity synthetic hydrocarbon emollient widely used in the cosmetics and pharmaceutical industries.

🧪 Basic Definition & Structure

Hydrogenated Polyisobutene is a branched-chain aliphatic hydrocarbon polymer. In cosmetic ingredient dictionaries, it is defined as a mixture of saturated hydrocarbons with an acyclic structure. It is often referred to as "synthetic squalane" because its chemical properties and skin feel are highly similar to those of natural squalane.

💡 Key Characteristics

• High Purity & Stability: High-purity Hydrogenated Polyisobutene is typically a colorless, odorless liquid with excellent thermal and chemical stability. Its color (APHA color number) is usually below 10, with extremely low acid values, and heavy metal and arsenic content are strictly controlled.

• Adjustable Skin Feel: By controlling the degree of polymerization, it can provide a wide range of textures—from light and volatile to rich and glossy—offering great flexibility in formulation design.

• Safety & Compatibility: Skin irritation tests have shown that it is generally not a skin or eye irritant or sensitizer. It remains stable across a broad pH range (3.0–11.0) and exhibits good compatibility with various UV absorbers.

• Adjustable Viscosity: Different grades of the product show significant differences in viscosity. For example, the basic physical properties of the PARLEAM® series are as follows:

💄 Applications in Cosmetics

Due to the above characteristics, Hydrogenated Polyisobutene is primarily used in cosmetics as a film-forming agent, viscosity modifier, and emollient. It provides the following benefits to formulations:

• Provides Moisturizing Skin Feel: As an emollient, it delivers a moisturizing, non-greasy skin feel.

• Forms a Protective Film: As a film-forming agent, it helps create a protective barrier on the skin or hair surface.

• Excellent Formulation Compatibility: It can be widely used in various formulations such as lotions, creams, lipsticks, sunscreens, makeup removers, and hair conditioners.

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