Sodium PCA

Benefits
Hair ConditioningMoisturizingSofteningUV Protection

What is Sodium PCA?

Sodium PCA, or sodium pyrrolidone carboxylate, is the sodium salt of pyroglutamic acid, a naturally occurring amino acid derivative found in the skin's natural moisturizing factor. It appears as a clear, viscous liquid in cosmetic formulations. Commonly used in moisturizers, serums, creams, lotions, and hair care products, it functions by binding water molecules from the environment and deeper skin layers, helping to maintain optimal hydration levels in the stratum corneum. This water-attracting ability supports the skin's barrier function and improves texture without greasiness. In hair products, it reduces static and enhances manageability by coating strands lightly. Derived either synthetically or from plant sources like glutamic acid, it integrates seamlessly into water-based formulas for everyday personal care.

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:

Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.
Humectant
Attracts and holds water in the stratum corneum, boosting hydration and plumpness; commonly used in moisturizers, cleansers, and hair conditioners.
Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Draws moisture into skin and hair for lasting hydration.

Softens and smooths skin texture while improving flexibility.

Conditions hair by reducing friction and static buildup.

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 dehydrated skin seeking hydration.
People with rare allergies to pyrrolidone compounds.
People with frizzy or unmanageable hair needing conditioning.
Those preferring anhydrous or oil-based products only.
Those in low-humidity environments to maintain moisture balance.
Individuals sensitive to humectants in very high concentrations.

Safety Notes

  • Rated low hazard by EWG with minimal risk of irritation.
  • Deemed safe for cosmetic use by regulatory reviews.

Frequently Asked Questions about Sodium PCA

What is Sodium PCA used for in cosmetics?

It serves as a humectant and conditioning agent in moisturizers and hair products to boost hydration and smoothness.

Is Sodium PCA safe for sensitive skin?

Yes, it has a low irritation profile according to safety evaluations.

Does Sodium PCA clog pores?

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