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METHYL ISOPROPYL KETONE.

Avoid CAS 563-80-4 / PERFUMING

Methyl Isopropyl Ketone is a volatile organic compound known for its strong solvent properties. While utilized in industrial applications and certain cosmetic categories like nail care, its direct application to skin carries a notable risk of defatting and irritation.

Solvent Denaturant Fragrance Component

Science

As a solvent, Methyl Isopropyl Ketone's molecular structure confers polarity and aids in dissolving various substances. Upon prolonged or repeated contact with the skin, this mechanism extends to epidermal lipids, leading to a defatting action. This can disrupt the skin's natural barrier function, manifesting as dryness, cracking, and irritation.


Research

Insufficient-data confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Methyl Isopropyl Ketone demonstrates stability under standard storage conditions when kept in tightly sealed containers. However, it is classified as a highly flammable liquid, necessitating storage in a cool, well-ventilated environment, rigorously isolated from heat, sparks, and open flames.

Conflicts

  • Strong oxidizing agents (e.g., perchlorates, peroxides, permanganates, chlorates, nitrates, chlorine, bromine, fluorine)
  • Strong bases (e.g., sodium hydroxide, potassium hydroxide)
  • Reducing agents
  • Heat
  • Flames
  • Sparks

Safety

CIR Status
Safe with restrictions
Sensitization risk Moderate

The Expert Panel for Cosmetic Ingredient Safety (CIR) concluded Methyl Isopropyl Ketone is safe for use within current practices and concentrations in nail care products and as an alcohol denaturant. No specific SCCS opinion is available. The FDA generally regulates cosmetic ingredients post-market; while not explicitly prohibited, its industrial classification as an irritant and flammable compound mandates stringent safety evaluations by manufacturers for any cosmetic application. The CIR assessment referenced MIBK (methyl isobutyl ketone), noting it's often used interchangeably or refers to a related ketone in broader contexts.


Your Skin

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

Our Assessment

Avoid

Due to its significant defatting properties and potential to cause dryness and irritation, Methyl Isopropyl Ketone is not recommended for precision skincare formulations, despite its restricted approval for specific uses like nail care.


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