Glutamine

What is Glutamine?

Glutamine is a non-essential amino acid, chemically known as 2-aminoglutaramic acid, present in proteins and synthesized via fermentation or chemical processes for cosmetic use. It appears in hair care products like shampoos and conditioners, as well as skin lotions and creams. In formulations, it acts as a humectant to draw moisture, forms protective films on skin and hair surfaces for smoothness, neutralizes electrical charges to prevent static buildup, and subtly contributes to scent profiles. This multifunctional role supports product stability and enhances sensory qualities without harsh effects, aligning with its mild profile in rinse-off and leave-on applications.

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

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Fragrance ingredient
Contributes scent character and/or masks base odors, shaping the overall sensory experience of the formula (subject to allergen and IFRA considerations).
Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.

Benefits

Enhances skin softness and flexibility through moisturizing action.

Improves hair manageability by reducing friction and static electricity.

Supports overall product texture for a smoother application 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 dry or rough skin seeking added smoothness.
Those with known allergies to amino acids, though rare.
People with frizzy or static-prone hair for better control.
People experiencing irritation from protein-derived ingredients.
Users of conditioning hair products for improved shine and softness.
Individuals sensitive to fragrance components in multi-role ingredients.

Safety Notes

  • Rated low hazard by EWG with scores of 1 across assessments.
  • Non-comedogenic, unlikely to clog pores at typical use levels.

Frequently Asked Questions about Glutamine

What is glutamine used for in cosmetics?

Primarily as a skin and hair conditioning agent, antistatic, and minor fragrance contributor.

Is glutamine safe for sensitive skin?

Generally considered safe with low irritation potential based on safety assessments.

Does glutamine help with hair static?

Yes, it reduces static by improving surface conductivity in hair products.