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Classic Cosmetic Active Ingredients

Cosmetic science continuously develops innovative active ingredients and discovers new bioactive compounds, particularly from the plant kingdom. At the same time, it still relies on classic cosmetic active ingredients that have proven their effectiveness over decades, are supported by extensive research, and continue to evolve through improved technologies and derivatives.

 

Vitamin A

Vitamin A is one of the most established cosmetic active ingredients. Retinol (vitamin A1) is a fat-soluble vitamin that plays a key role in anti-aging skincare. Because pure retinol is sensitive to light, air, and oxidation, cosmetic formulations often use more stable derivatives such as retinyl acetate, retinyl palmitate, retinyl linoleate, or retinal.

Numerous clinical studies have demonstrated its ability to stimulate cell turnover, support collagen synthesis, regulate matrix metalloproteinases (MMPs), normalize keratinization, improve epithelial formation, and support the skin’s natural functions. It also promotes the regeneration of UV-damaged skin.

As a result, vitamin A is widely used to reduce wrinkles, age spots, acne, enlarged pores, and other visible signs of skin aging.

A more recent development is Hydroxypinacolone Retinoate (HPR), a retinoid ester that binds directly to retinoid receptors without requiring conversion into retinoic acid. Compared with traditional retinol, it offers greater stability, faster activity, and improved skin tolerance while stimulating collagen production, improving skin texture, reducing hyperpigmentation, and minimizing pore appearance.

 

Vitamin C

Vitamin C is another classic cosmetic active ingredient with extensive scientific support. Pure ascorbic acid acts directly and is known for its antioxidant activity, its role in collagen synthesis, and its ability to help reduce pigmentation through tyrosinase inhibition.

Because pure vitamin C is highly unstable, cosmetic products often use more stable derivatives. These include:

  • 3-O-Ethyl Ascorbic Acid
  • Ascorbyl Glucoside
  • Magnesium Ascorbyl Phosphate
  • Sodium Ascorbyl Phosphate
  • Ascorbyl Palmitate
  • Ascorbyl Tetraisopalmitate

These derivatives help protect the skin from oxidative stress and premature aging while providing improved formulation stability and skin compatibility.

Encapsulation technologies are often used to protect vitamin C derivatives from degradation and provide a prolonged release effect after application.

 

Niacinamide

Niacinamide, also known as vitamin B3, is one of the most versatile cosmetic active ingredients available today.

As a precursor of NADH and NADPH, it supports numerous cellular processes, including DNA repair, cell renewal, and antioxidant defense mechanisms.

Its cosmetic benefits include:

  • Refining skin texture
  • Reducing the appearance of enlarged pores
  • Regulating sebum production
  • Supporting collagen and elastin synthesis
  • Strengthening the skin barrier
  • Increasing ceramide production
  • Improving skin hydration
  • Reducing hyperpigmentation
  • Providing antioxidant protection

Niacinamide is suitable for both oily and dry skin and is frequently used in serums, CC creams, brightening products, and scalp-care formulations.

Concentrations above 5% may cause temporary redness in sensitive skin due to increased blood circulation. Care should also be taken when combining niacinamide with highly acidic vitamin C formulations.

 

Hyaluronic Acid

Hyaluronic acid is one of the most widely used moisturizing ingredients in cosmetics. One gram can bind up to six liters of water, helping to improve skin hydration, elasticity, and smoothness.

Different molecular weights provide different benefits. Low-molecular-weight hyaluronic acid penetrates more effectively, while high-molecular-weight forms remain on the skin surface, reducing moisture loss.

Modern cosmetic formulations utilize several advanced forms of hyaluronic acid:

Sodium Hyaluronate

A naturally occurring component of the skin that provides effective hydration and a pleasant skin feel.

Sodium Hyaluronate Crosspolymer

A cross-linked form that remains longer on the skin surface and acts as a moisture reservoir, providing both immediate and long-lasting hydration.

Sodium Acetylated Hyaluronate

An acetylated form with enhanced adhesion to the skin, helping to improve moisture retention and barrier function.

Sodium Oleoyl Hyaluronate

A lipophilic form that improves the delivery of hydrophobic active ingredients while supporting the skin’s natural lipid barrier.

Hydrolyzed Hyaluronic Acid

Produced through hydrolysis, offering improved solubility and moisturizing properties.

Hydroxypropyl Trimethylammonium Hyaluronate

A highly substantive form that remains on the skin and hair even after rinsing.

C12-13 Alkyl Glyceryl Hydrolyzed Hyaluronate

A modified hyaluronic acid derivative that strengthens the skin barrier, increases hydration, and reduces transepidermal water loss.

 

Carnosine

L-Carnosine (β-alanyl-L-histidine) is a naturally occurring dipeptide composed of histidine and beta-alanine. It is known for its anti-aging potential and its ability to help counteract cellular aging processes.

Studies have shown that carnosine can increase the lifespan and division potential of aged cells. In cosmetic applications, it helps:

  • Combat wrinkles
  • Protect collagen and elastin fibers
  • Reduce glycation processes
  • Stimulate collagen synthesis
  • Provide antioxidant protection
  • Protect against visible and infrared light-induced skin damage

Due to these properties, carnosine is frequently used in anti-aging, anti-wrinkle, and after-sun formulations.

 

Classic Cosmetic Active Ingredients Remain Highly Relevant

Despite the constant introduction of new cosmetic ingredients, classic active ingredients remain the foundation of modern skincare. Their efficacy is supported by decades of scientific research, while ongoing innovation continues to improve their stability, skin availability, and tolerability.

At Cosmacon, we value active ingredients that combine proven performance with scientific credibility and are happy to integrate them into innovative cosmetic formulations. Contact us!

 

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