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METHYL PERFLUOROISOBUTYL ETHER.

Avoid CAS 163702-08-7 / SOLVENT, VISCOSITY CONTROLLING

Methyl Perfluoroisobutyl Ether is a versatile cosmetic ingredient primarily functioning as an effective emulsifier and gentle solvent, crucial for maintaining consistent product formulations. On the skin, it imparts a smooth, matte finish by regulating excess oil and forming a breathable, moisture-repellent barrier, while also enhancing cosmetic texture and spreadability.

Emulsifier Solvent Emollient Viscosity Controller Texture Enhancer Oil Control Agent Breathable Barrier Agent

Science

Within formulations, Methyl Perfluoroisobutyl Ether acts as an effective emulsifier, seamlessly blending oil and water phases to ensure product stability and consistency. It also functions as a gentle solvent, aiding in the dissolution of other ingredients. Applied to the skin, it contributes to a smooth, non-greasy texture and a desirable matte appearance by helping to control sebum. It establishes a subtle, breathable barrier that repels environmental moisture and dirt, supporting the skin's natural balance without pore occlusion. Furthermore, it serves as an emollient and viscosity controller, optimizing the smoothness, spreadability, and absorption of skincare and makeup products.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

No specific data is available regarding the dusting properties of Methyl Perfluoroisobutyl Ether.


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Methyl Perfluoroisobutyl Ether exhibits excellent thermal and chemical stability, contributing to prolonged product consistency and effectiveness. It is readily miscible with various ingredients, facilitating the creation of stable formulas. However, the product is noted to be potentially unstable when exposed to incompatible materials, though specific conflicts are not detailed.


Safety

CIR Status
Not reviewed
Pregnancy
Caution
Sensitization risk Moderate

Methyl Perfluoroisobutyl Ether is classified as a Per- and polyfluoroalkyl substance (PFAS), identified by the FDA as an intentionally added cosmetic ingredient. PFAS compounds are recognized as 'forever chemicals' due to their ability to penetrate the skin, accumulate, and persist within the human body. This bioaccumulation is associated with potential long-term health risks including increased susceptibility to cancer, immune system dysregulation, hormonal imbalances, thyroid disease, liver damage, and decreased fertility. The European Union's Cosmetics Regulation continuously monitors this compound, and the European Chemicals Agency (ECHA) advises careful monitoring of its use to ensure safe concentrations in cosmetic products. While generally not reported to cause major adverse reactions, some individuals may experience sensitivity or allergic reactions, necessitating prior skin testing. Due to the significant concerns surrounding PFAS and their persistence, use during pregnancy or in products for vulnerable populations is not recommended.


Your Skin

Yes Normal
No Dry
Yes Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Avoid

Despite its functional benefits in formulation and skin texture, Methyl Perfluoroisobutyl Ether is a PFAS 'forever chemical' with significant long-term health and environmental concerns, leading to an 'avoid' recommendation for precision skincare formulations.


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