Acetyl Methionine

What is Acetyl Methionine?

Acetyl Methionine is the N-acetyl ester of L-methionine, an essential sulfur-containing amino acid found in many proteins. This synthetic derivative enhances stability and solubility for cosmetic use. It falls under skin conditioning agents in formulations like creams, lotions, and serums. In products, it works by associating with skin lipids and proteins to support moisture balance and texture improvement. The acetyl modification allows better penetration and compatibility in water- or oil-based systems compared to unmodified methionine. Primarily included for its humectant-like properties, it aids in preserving the skin's supple feel without altering pH significantly. Cosmetic regulators recognize it for topical safety in rinse-off and leave-on items.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Supports skin softness by interacting with natural lipids.

Promotes smoothness and even texture.

Helps maintain skin flexibility for a comfortable feel.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with normal to dry skin seeking conditioning.
Anyone with known allergies to amino acids.
People using moisturizers for daily hydration support.
People sensitive to sulfur compounds.
Those preferring amino acid-based gentle ingredients.
Those preferring to avoid synthetic derivatives.

Safety Notes

  • Rated low hazard by environmental working groups.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Acetyl Methionine

What is Acetyl Methionine?

It is an acetylated form of the amino acid methionine used as a skin conditioner in cosmetics.

Is it safe for daily use?

It has a low safety rating and is suitable for most in topical products.

Does it clog pores?

It has a comedogenic rating of 0, making it non-pore-clogging.