Grand Polyglutamate (700k Da)

Grand polyglutamate (700 kDa) is a viscous polymer of amino acids, commonly found in the form of sodium salts. Its structure comprises amino acid units linked by peptide bonds formed through α-amino and γ-carboxyl groups. This unique composition includes a significant number of side chain carboxyl acids that can establish hydrogen bonds within or between molecules.

INCI Line: Sodium Polyglutamate (700kDa)

CAS No: 28829-38-1
Appearance: White Powder

Polyglutamate (700k Da) is a high-molecular-weight polymer made from the amino acid glutamic acid. It is primarily used in the cosmetics industry for its moisturizing, hydrating, and anti-aging properties. Due to its large molecular size (700k Da), Polyglutamate offers unique benefits, especially in maintaining skin hydration and protecting the skin barrier.

Here’s an in-depth look at Polyglutamate (700k Da) in cosmetics:

Sources and Synthesis

Polyglutamate is typically biotechnologically produced using fermentation processes involving microorganisms such as certain bacteria or fungi that naturally synthesize polyglutamic acid. The polymer can then be purified and used in cosmetic formulations. Polyglutamate (700k Da) is often synthesized to ensure a consistent and effective molecular weight for targeted cosmetic benefits.

Functions and Benefits in Cosmetics

  1. Hydration and Moisture Retention:

    • One of the primary benefits of Polyglutamate (700k Da) in skincare is its ability to retain moisture. The polymer’s high molecular weight prevents it from penetrating deeply into the skin, allowing it to form a moisture-binding layer on the skin’s surface. This hydration barrier helps maintain skin moisture levels and prevents trans-epidermal water loss (TEWL).
    • Polyglutamate is often included in moisturizing creams, serums, and masks for its ability to lock in moisture and improve skin hydration for longer periods.
  2. Improved Skin Barrier Function:

    • Polyglutamate has been shown to strengthen and protect the skin’s natural barrier. By preventing moisture loss and shielding the skin from external environmental stressors such as pollution, dry air, and harsh weather, it supports the skin’s defense mechanisms and helps maintain overall skin health.
    • This makes it particularly useful for individuals with dry skin or compromised skin barriers that are prone to irritation and moisture loss.
  3. Anti-Aging and Skin Firmness:

    • Polyglutamate (700k Da) is known for its anti-aging benefits. By improving the skin’s moisture retention and elasticity, it helps to reduce the appearance of fine lines and wrinkles. This effect is primarily due to its hydrating properties, as well-hydrated skin tends to appear plumper, more elastic, and smoother.
    • The moisturizing barrier also protects the skin from environmental factors that contribute to aging, including UV exposure and pollution, which can accelerate the breakdown of collagen and elastin fibers in the skin.
  4. Soothing and Calming Properties:

    • Polyglutamate has a soothing effect on the skin, making it suitable for sensitive or irritated skin. It helps to reduce inflammation and redness, providing relief for conditions like eczema, rosacea, and post-sun irritation.
    • This makes it an excellent addition to after-sun care or calming skincare products designed for sensitive skin types.
  5. Film-Forming and Softening Agent:

    • Due to its high molecular weight, Polyglutamate forms a film on the skin, which can have a softening and silky feel. This is often used in anti-aging or luxury products where a smooth, soft texture is desired.
    • The film-forming nature of Polyglutamate also creates a barrier effect against environmental pollutants and other harmful agents, adding a layer of protection to the skin while maintaining hydration.
  6. Skin Brightening:

    • Some studies suggest that Polyglutamate can contribute to a brighter, more even skin tone by improving the skin’s overall hydration and minimizing dry patches or uneven texture. This can be beneficial in brightening and glowing skincare products.

Formulation Considerations

  • Solubility: Polyglutamate is water-soluble, which makes it ideal for incorporation into aqueous-based formulations like serums, creams, lotions, moisturizers, and masks.

  • Stability: Polyglutamate (700k Da) is stable in a variety of pH and temperature conditions, which makes it suitable for use in a wide range of cosmetic formulations. However, as with most cosmetic ingredients, it should be protected from excessive heat or direct light during manufacturing and storage to maintain optimal efficacy.

  • Concentration: Polyglutamate is typically used at concentrations ranging from 0.5% to 3% in cosmetic products, although this can vary depending on the specific formulation and the intended effect.

Safety and Side Effects

  • Safety Profile: Polyglutamate (700k Da) is considered to be safe for use in cosmetics. It has a low risk of causing skin irritation or sensitization, and it is generally well-tolerated by most skin types.

  • Possible Side Effects: While rare, some individuals with particularly sensitive skin may experience mild irritation or breakouts. As with any cosmetic ingredient, it is recommended to conduct a patch test before using a new product that contains Polyglutamate, especially if you have known sensitivities to certain ingredients.

Regulatory Status

  • Polyglutamate (700k Da) is approved for use in cosmetics in various regions, including the European Union and the United States. It is generally included in the INCI (International Nomenclature of Cosmetic Ingredients) list as a safe and effective skincare ingredient.

Common Applications in Cosmetics

  1. Hydrating Moisturizers: Polyglutamate is commonly found in moisturizers designed to provide long-lasting hydration and improve skin texture. It helps lock moisture into the skin and reduce dryness or flakiness.

  2. Anti-Aging Creams: Due to its ability to support skin hydration and elasticity, Polyglutamate is often used in anti-aging products that aim to reduce the appearance of fine lines, wrinkles, and dry skin.

  3. Serums and Masks: Polyglutamate is frequently used in serums and overnight masks that target hydration, skin repair, and plumping effects.

  4. After-Sun Care: Given its soothing and calming properties, Polyglutamate is an effective ingredient in after-sun care products that help to replenish moisture and reduce skin irritation caused by sun exposure.

  5. Sensitive Skin Products: Due to its gentle, non-irritating nature, Polyglutamate is a great option for products designed for sensitive or irritated skin, offering hydration and skin protection without causing further irritation.

Market Trends and Innovations

  1. Sustainability: Polyglutamate is a biopolymer, which aligns with the growing demand for eco-friendly and sustainable ingredients in the beauty and cosmetics industry. It is biodegradable and can be produced using renewable resources, making it an attractive ingredient for clean beauty formulations.

  2. Focus on Long-Lasting Hydration: As consumers increasingly seek products that offer long-lasting hydration and skin barrier protection, Polyglutamate is gaining popularity for its ability to provide sustained moisture without clogging pores or causing irritation.

  3. Rise in Multifunctional Products: Polyglutamate is being integrated into more multifunctional skincare products that target a variety of concerns, such as anti-aging, hydration, and skin protection, making it a versatile ingredient for various skin types.


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