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Hyaluronic Acid as a Cosmetic Active Ingredient

As a cosmetic active ingredient, hyaluronic acid supports numerous physiological functions of the skin and is now one of the most important ingredients in modern skincare.

Its key properties include:

  • Strengthening the skin’s natural barrier
  • Intense moisture retention on the skin’s surface
  • Water storage in the epidermis and the extracellular matrix
  • Supporting cell communication and cell regeneration
  • Protection and activation of fibroblasts
  • Promotion of collagen and elastin formation
  • Improvement of elasticity and firmness
  • Plumping effect for a smoother complexion
  • Antioxidant protection and support for UV protection
  • Anti-inflammatory properties

Thanks to these diverse effects, hyaluronic acid, as a cosmetic active ingredient, has an exceptionally broad range of applications.

 

Applications of Hyaluronic Acid

Hyaluronic acid is used, among other things, in:

  • moisturizing skincare products
  • anti-wrinkle and anti-aging cosmetics
  • anti-pollution products
  • soothing skincare products
  • sunscreen formulations
  • products for sensitive skin

It is particularly suitable for dry and dehydrated skin, fine lines, deep wrinkles, mature skin, the sensitive eye area, and for sensitive skin or skin prone to atopic dermatitis.

 

From Medical Device to Cosmetic Active Ingredient

The first medical applications of hyaluronic acid were as a substitute for the aqueous humor of the eye and for the synovial fluid of the joints.

Since the 1980s, hyaluronic acid has evolved as a cosmetic active ingredient into an integral part of modern skincare.

As research has progressed, low-molecular-weight hyaluronic acid fragments have also come into focus. Due to their smaller molecular size, they can penetrate deeper into the skin and perform additional functions there.

Furthermore, they can serve as transport vehicles, delivering other active ingredients more efficiently into the skin. Hyaluronic acid receptors can also be specifically targeted to deliver coupled active ingredients to their intended destination.

 

Hyaluronic Acid and Skin Aging

As we age, the skin’s natural hyaluronic acid content decreases significantly. This reduces the skin’s ability to retain moisture, causing it to lose elasticity and leading to the formation of the first wrinkles.

When applied to the skin, high-molecular-weight hyaluronic acid intensively hydrates the upper layers of the skin and immediately improves the skin’s texture and feel.

Low-molecular-weight hyaluronic acid fragments additionally support cellular metabolism, promote cell renewal, and stimulate the formation of collagen, elastin, and other structural proteins.

The combination of different molecular weights makes it possible to use hyaluronic acid particularly effectively as a cosmetic active ingredient.

 

Protecting Hyaluronic Acid

It’s not just the supply of hyaluronic acid that matters—its natural breakdown in the skin can also be influenced.

The enzyme hyaluronidase continuously breaks down hyaluronic acid. Various natural ingredients can slow this process and thereby prolong the effectiveness of both the body’s own hyaluronic acid and that applied topically.

Well-known hyaluronidase inhibitors include:

  • Vitamin C (L-ascorbic acid)
  • Pectins from apples and citrus fruits
  • Polysaccharides from gymnema (gurmar)
  • Alginic acid from brown algae (Laminaria digitata)
  • glycyrrhizin from licorice root
  • flavonoids such as silybin, kaempferol, apigenin, and luteolin
  • polyphenols, particularly tannic acid
  • polyphenols from blackberries

These natural substances can reduce age-related hyaluronic acid breakdown and thereby effectively support the action of hyaluronic acid as a cosmetic active ingredient.

 

Targeted Use of Hyaluronidases

Conversely, hyaluronidase can also be used in a targeted manner when active ingredients need to penetrate the skin more effectively.

Studies show, for example, that hyaluronidase can improve the uptake of biotin into the epidermis. Effective concentrations in the epidermis were thereby achieved in both oil-in-water and water-in-oil emulsions.

Hyaluronidase thus opens up interesting possibilities for modern active ingredient delivery systems.

 

Hyaluronic Acid as a Cosmetic Active Ingredient – Conclusion

In modern cosmetics, there are essentially three ways to support the skin’s performance with hyaluronic acid over the long term.

  • First, through the topical application of high-molecular-weight hyaluronic acid, which forms a moisturizing film, smooths the skin, and strengthens the skin barrier.
  • Second, through low-molecular-weight hyaluronic acid, which can penetrate deeper into the epidermis, bind water there, and support the formation of collagen and elastin.
  • Third, by protecting the body’s own hyaluronic acid with the help of natural hyaluronidase inhibitors, which slow down its enzymatic breakdown.

The combination of these strategies makes hyaluronic acid one of the most versatile and scientifically well-documented active ingredients in modern skincare. Biotechnologically derived hyaluronic acid, combined with natural hyaluronidase inhibitors, is ideal for high-quality skincare, anti-aging products, and modern natural cosmetics.

 

Cosmacon is happy to support you in developing innovative cosmetic products with hyaluronic acid and customized active ingredient concepts for sophisticated skincare.

 

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