Unlocking the Power of Sericin in Cosmetic Formulations

Sericin, a remarkable protein derived from silk, has been gaining significant attention in the cosmetics industry for its versatile properties and numerous benefits for skin and hair care. In this comprehensive guide, we’ll explore the role of sericin in cosmetic formulations, its unique characteristics, and how it can elevate your beauty products to new heights.

What is Sericin?

Sericin is a natural silk protein produced by the silkworm Bombyx mori. This water-soluble glycoprotein comprises 25-30% of the silk cocoon and is known for its excellent moisture absorption and retention properties. With a molecular weight ranging from 10 to 400 kDa, sericin offers a wide array of functional benefits in cosmetic applications.

Sericin’s Unique Properties for Cosmetics

Sericin boasts several characteristics that make it an invaluable ingredient in cosmetic formulations:

Moisture retention: Sericin’s amino acid composition allows it to excel in absorbing and retaining moisture on the skin.
Film-forming ability: It forms a protective, anti-wrinkle film on the skin surface, providing an immediate and long-lasting smooth feeling.
Keratin affinity: Sericin has a strong affinity to keratin, making it particularly effective in hair care products.
Skin benefits: It helps reduce skin water loss and irritation, contributing to overall skin health.

Sericin in Cosmetic Formulations

Sericin can be incorporated into various cosmetic products, enhancing their performance and user experience. Here are some key applications:

Skin Care

Moisturizers: Sericin’s hydrating properties make it an excellent addition to lotions and creams.
Anti-aging products: Its film-forming ability helps reduce the appearance of fine lines and wrinkles.
Serums: Sericin can be used in concentrated formulations for targeted skin benefits.

Hair Care

Conditioners: Sericin’s affinity to keratin makes it effective in smoothing and protecting hair strands.
Hair masks: It can provide deep nourishment and repair to damaged hair.

Color Cosmetics

Foundations: Sericin can enhance the texture and skin-feel of makeup products.
Lipsticks: Its moisturizing properties can improve the comfort of lip products.

Formulation Considerations

When incorporating sericin into cosmetic formulations, consider the following:

Form: Sericin is available in both native and hydrolyzed forms. Hydrolyzed sericin is often easier to formulate with due to its lower molecular weight.
Concentration: Effective concentrations can vary, but studies have shown positive results with as little as 0.01% w/w hydrolyzed sericin.
Stability: Sericin-containing formulations have demonstrated good stability under accelerated conditions for up to 3 months. You can read more here.
Compatibility: Sericin can be combined with other active ingredients to create synergistic effects.

Ingredients Used in Cosmetic Formulations with Sericin

In cosmetic formulations, sericin is often combined with various other ingredients to enhance its effectiveness and provide additional benefits. The following table categorizes these ingredients based on their functional purposes:

Function	Ingredients
Humectants	Glycerin, Hyaluronic Acid, Propylene Glycol, Sorbitol, Butylene Glycol, Sodium PCA
Emollients	Shea Butter, Jojoba Oil, Squalane, Caprylic/Capric Triglyceride, Dimethicone, Cetyl Alcohol
Emulsifiers	Polysorbate 20, Cetearyl Alcohol, Glyceryl Stearate, PEG-100 Stearate, Lecithin
Preservatives	Phenoxyethanol, Ethylhexylglycerin, Benzyl Alcohol, Potassium Sorbate, Sodium Benzoate
Antioxidants	Vitamin E (Tocopherol), Ascorbic Acid (Vitamin C), Green Tea Extract, Resveratrol, Coenzyme Q10
Surfactants	Sodium Lauryl Sulfate, Cocamidopropyl Betaine, Decyl Glucoside, Lauryl Glucoside
Thickeners	Carbomer, Xanthan Gum, Hydroxyethylcellulose, Guar Gum, Stearic Acid
Fragrance	Essential Oils (Lavender, Rose, Peppermint), Synthetic Fragrances (Vanillin)
Colorants	Iron Oxides, Titanium Dioxide, Mica, Carmine, Ultramarines
Skin Conditioning	Aloe Vera Extract, Panthenol (Provitamin B5), Allantoin, Niacinamide (Vitamin B3), Collagen
Anti-aging	Retinol, Peptides (Matrixyl, Argireline), Alpha Hydroxy Acids (Glycolic Acid, Lactic Acid)
UV Filters	Zinc Oxide, Titanium Dioxide, Avobenzone, Octocrylene, Oxybenzone
Chelating Agents	Disodium EDTA, Tetrasodium EDTA, Citric Acid
pH Adjusters	Sodium Hydroxide, Citric Acid, Lactic Acid, Triethanolamine
Film Formers	PVP (Polyvinylpyrrolidone), Acrylates Copolymer, Polyquaternium-7, Hydroxypropyl Methylcellulose
Anti-irritants	Bisabolol, Chamomile Extract, Calendula Extract, Oat Extract
Skin Brightening	Alpha Arbutin, Licorice Extract, Kojic Acid, Vitamin C Derivatives (Sodium Ascorbyl Phosphate)

Safety and Tolerability

Research has shown that sericin and its formulations are well-tolerated and do not cause skin irritation. This makes it suitable for a wide range of cosmetic applications, including those for sensitive skin. You can read about Safety Assessment of Silk in Haircare Here.

Conclusion

Sericin’s unique properties make it a valuable ingredient in cosmetic formulations, offering benefits for both skin and hair care products. Its ability to enhance moisture retention, form protective films, and improve product textures can significantly elevate the performance of various cosmetic formulations.

For cosmetic manufacturers, researchers, and formulators looking to harness the power of sericin in their products, Serione offers high-quality sericin derived from carefully selected silk sources. Our sericin is rigorously tested to ensure purity, consistency, and effectiveness in cosmetic applications. Contact us to know more.

Unlocking the Power of Sericin in Cosmetic Formulations

What is Sericin?

Sericin’s Unique Properties for Cosmetics