Methylene Glycol Ingredient Allergy Safety Information

Methylene Glycol (CAS no. 463-57-0)

Definition

Methylene Glycol is an aqueous solution of formaldehyde which, under certain conditions, can release formaldehyde gas. It is colorless and has a characteristic pungent odor.

Usage in Cosmetics and Household Products

Methylene Glycol is primarily used for its antimicrobial and preservative properties in cosmetics and household products such as:

Hair Straightening Products: To help alter the structure of hair to achieve a straightened appearance.
Preservatives: To extend the shelf life of various cosmetic and personal care products.
Disinfectants: In household cleaning agents for its antimicrobial action.

Other Names or Synonyms

Skin Sensitivities and Allergies

Methylene Glycol, upon releasing formaldehyde, can cause skin irritation and sensitization. Individuals with sensitive skin or existing skin conditions may experience heightened skin reactions like allergic contact dermatitis upon exposure.

Other Associated Risks

Respiratory Irritation: Inhalation of methylene glycol vapors or released formaldehyde can irritate the respiratory tract.
Cancer Risk: The International Agency for Research on Cancer (IARC) classifies formaldehyde as a Group 1 carcinogen, implying that exposure may contribute to cancer risk.
Eye Irritation: Exposure can cause severe eye irritation or damage.

Regulatory Status

As per California Assembly Bill No. 496, Methylene Glycol is banned from use in cosmetic products sold or manufactured in California starting January 1, 2025, due to its potential to release formaldehyde.

Banning Justification (California Assembly Bill No. 496, CHAPTER 441)

The legislation highlights the importance of protecting public health by restricting the use of certain hazardous ingredients in cosmetics, including Methylene Glycol, from January 1, 2025. This step reflects a broader initiative to minimize toxic exposure, especially for sensitive skin consumers, and enhance overall cosmetic safety.

Notes for Sensitive Skin Consumers

It's advisable for sensitive skin consumers to avoid products containing Methylene Glycol to prevent potential skin irritation and allergic reactions. Opting for products labeled as "formaldehyde-free" on SkinSAFE or consulting a dermatologist for safer alternatives is recommended.

Exemption Clause (California Assembly Bill No. 496)

An exemption is provided for trace quantities of banned substances if they result from technically unavoidable circumstances like manufacturing processes, ingredient impurities, storage, or packaging migration. Such trace quantities do not lead to a violation of the specified regulatory standards.