Skinactive Glucosamine

Skinactive Glucosamine, Acetyl glucosamine (also known as N-acetyl glucosamine or NAG), is a naturally occurring amino sugar that is found in the body. It is a precursor to hyaluronic acid, which is a substance that helps to keep the skin hydrated and plump. Acetyl glucosamine is also known to have anti-inflammatory and antioxidant properties.

INCI name: Acetyl Glucosamine

OTher name: N-Acetyl D-Glucosamine
CAS: 7512-17-6
Appearance: White powder

Acetyl Glucosamine (GlcNAc) is a naturally occurring amino sugar that plays an essential role in maintaining the structure and function of the extracellular matrix in tissues. It is a derivative of glucosamine, an amino sugar found in chitin (the exoskeleton of crustaceans) and is often used in cosmetic and skincare products due to its moisturizing, anti-inflammatory, and skin-repairing properties.

In cosmetics, Acetyl Glucosamine is often included for its benefits in promoting skin hydration, improving skin texture, and reducing hyperpigmentation. It is a key ingredient in various anti-aging, brightening, and hydrating products.


Chemical Properties

  • Structure: Acetyl Glucosamine is an amino sugar where the acetyl group (-COCH3) is attached to the glucosamine molecule, which itself is a sugar derivative. This structure contributes to its biological activity and allows it to integrate well into various biological processes.

  • Solubility: Acetyl Glucosamine is soluble in water and can be incorporated easily into aqueous-based formulations, making it suitable for use in creams, serums, and lotions.

  • Stability: It is relatively stable under standard storage conditions, but like other active ingredients, it should be stored away from direct sunlight and heat to maintain its potency.


Functions and Benefits in Cosmetics

  1. Moisturization:

    • Acetyl Glucosamine acts as a humectant, drawing moisture into the skin and enhancing skin hydration. This makes it particularly beneficial for dry and dehydrated skin, helping to maintain a smooth and plump appearance.
  2. Skin Barrier Repair:

    • Acetyl Glucosamine supports the synthesis of glycosaminoglycans (GAGs), such as hyaluronic acid, which are essential for maintaining the structural integrity and hydration of the skin barrier. By enhancing the skin’s natural barrier, it helps prevent moisture loss and protects the skin from environmental stressors.
  3. Anti-Aging Benefits:

    • Acetyl Glucosamine has been shown to stimulate the production of collagen and elastin, which are key proteins that contribute to skin elasticity and firmness. By promoting these proteins, it can help reduce the appearance of fine lines and wrinkles, leading to smoother and more youthful-looking skin.
  4. Brightening and Hyperpigmentation Reduction:

    • Acetyl Glucosamine is often used in formulations targeting uneven skin tone and hyperpigmentation. It has been shown to help inhibit melanin production, which can reduce the appearance of dark spots, age spots, and sun damage. This makes it a popular ingredient in brightening and evening out skin tone products.
  5. Anti-Inflammatory Effects:

    • Acetyl Glucosamine has natural anti-inflammatory properties, making it beneficial for calming irritated or sensitive skin. It can help reduce redness, swelling, and discomfort, which is particularly useful in products designed for conditions like rosacea, eczema, and acne.
  6. Improved Skin Texture:

    • By enhancing the skin’s moisture content and promoting collagen synthesis, Acetyl Glucosamine helps improve skin texture and smoothness. This can result in a more even and refined skin surface, making it a useful ingredient in exfoliating and texture-refining products.

Formulation Considerations

  1. Concentration:

    • Typical Usage: Acetyl Glucosamine is typically used in concentrations ranging from 0.5% to 5% in cosmetic formulations, depending on the desired effect. For brightening or anti-aging benefits, higher concentrations (around 2-5%) may be more effective.
  2. Formulation Types:

    • Moisturizers and Creams: Due to its hydrating properties, Acetyl Glucosamine is commonly included in moisturizers, hydrating creams, and anti-aging products.
    • Serums and Spot Treatments: It is often found in serums and spot treatments for hyperpigmentation and uneven skin tone, where it can have a targeted effect on dark spots.
    • Exfoliating Products: Acetyl Glucosamine can be used in products designed to improve skin texture and promote gentle exfoliation without causing irritation. This makes it suitable for exfoliating masks and chemical exfoliants.
    • Anti-Acne and Calming Products: With its anti-inflammatory effects, Acetyl Glucosamine is often incorporated into anti-acne and calming products, helping to reduce redness and irritation.
  3. pH Considerations:

    • Acetyl Glucosamine works best in slightly acidic to neutral pH ranges (typically 4.5 to 6.5), which is compatible with most skincare formulations.
  4. Compatibility:

    • Acetyl Glucosamine is compatible with a wide range of cosmetic ingredients, including vitamins (such as Vitamin C), peptides, hyaluronic acid, exfoliants, and botanical extracts. It enhances the overall performance of brightening, anti-aging, and hydrating products.

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