Hydrolyzed Silk

Also known as: silk protein

Hydrolyzed silk is a protein derived from natural silk fibers that has been broken down into smaller peptides or amino acids. This process allows it to be more easily absorbed by the skin and hair. It is commonly used in cosmetics for its conditioning, moisturizing, and film-forming properties, helping to improve the texture and appearance of skin and hair.

BenefitModerate 2 / 4

Hydration i1.5 / 4

Whether the ingredient helps increase the skin’s water content — humectants that attract water, ingredients that reduce water loss, or ones that make skin feel less dry.

Texture i1 / 4

Whether it can improve smoothness and surface texture — roughness, flaking, clogged pores, or unevenness. Exfoliating acids, retinoids, and smoothing moisturizers may score here.

RiskLow 0.5 / 4

Sensitization i0.5 / 4

Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

• Conditions skin and hair
• Provides moisturizing benefits
• Forms a protective film
• Improves hair shine and texture

Things to watch

• Potential for allergic reaction

Products with Hydrolyzed Silk

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Frequently asked questions

What does hydrolyzed silk do for the skin?

On the skin, hydrolyzed silk acts as a humectant, drawing moisture from the air to hydrate the skin. It can also form a light, breathable film that helps to reduce moisture loss and improve skin smoothness.

How does hydrolyzed silk benefit hair?

In hair care, hydrolyzed silk penetrates the hair shaft to condition and strengthen strands, reducing breakage. It also imparts shine, improves elasticity, and helps to repair damaged hair, making it feel softer and smoother.