Silk proteins, from cut cocoon to formula
Eight sericin and fibroin ingredients for skin and hair care, recovered from cut cocoons in Karnataka, India. Every grade is defined by its source protein and molecular weight, so you know exactly what goes into your formula.
Two cocoon varieties. One silk protein platform.
Our silk proteins are extracted from two naturally distinct cocoon varieties: white bivoltine and naturally golden multivoltine. Both provide the two principal silk proteins, sericin and fibroin.
Bivoltine
White silk cocoons
Naturally white bivoltine cocoons provide a clean, neutral starting material for the extraction of sericin and fibroin.
- Produces
- Sericin · Fibroin
- Character
- White / neutral
Multivoltine
Naturally golden silk cocoons
Naturally golden multivoltine cocoons provide sericin and fibroin with the characteristic colour of the source silk.
- Produces
- Sericin · Fibroin
- Character
- Naturally golden
- Bivoltine + Multivoltine
- Sericin + Fibroin
- Multiple grades & formats
Same core silk proteins. Different natural origin.
Find your grade
Sericin Powder (High MW)
- Source protein
- Sericin
- INCI
- Sericin
- Form
- Powder
- Size
- 10–50 kDa
- Best for
- Creams, cushions, conditioners
Hydrolyzed Sericin (Low MW)
- Source protein
- Sericin
- INCI
- Hydrolyzed Sericin
- Form
- Powder
- Size
- 1–5 kDa
- Best for
- Toners, essences, ampoules
Hydrolyzed Sericin Solution 10%
- Source protein
- Sericin
- INCI
- Water, Hydrolyzed Sericin
- Form
- Liquid
- Size
- 10% active
- Best for
- Mists, toners, sheet masks
Silk Powder (Micronized)
- Source protein
- Fibroin
- INCI
- Silk Powder
- Form
- Powder
- Size
- D50 < 10 µm
- Best for
- Cushions, powders, sun care
Silk Peptide
- Source protein
- Fibroin
- INCI
- Hydrolyzed Silk
- Form
- Powder
- Size
- 500–3,000 Da
- Best for
- Serums, eye care, hair repair
Silk Peptide Solution 10%
- Source protein
- Fibroin
- INCI
- Water, Hydrolyzed Silk
- Form
- Liquid
- Size
- 10% active
- Best for
- Serums, toners, hair mists
Silk Amino Acids
- Source protein
- Fibroin
- INCI
- Silk Amino Acids
- Form
- Powder
- Size
- ~100–150 Da
- Best for
- Toners, mists, shampoos
Silk Protein Complex
- Source protein
- Fibroin + sericin
- INCI
- Hydrolyzed Silk (and) Hydrolyzed Sericin
- Form
- Powder
- Size
- 70:30 blend
- Best for
- Hero serums, all-in-one creams
One cocoon, two proteins
A silk cocoon is made of two proteins. Each one gives a different benefit, which is why our range is split into two lines.
| Sericin | Fibroin | |
|---|---|---|
| Where it is | Outer coating ("silk gum") | Inner fibre |
| Share of the cocoon | About 20–30% | About 70–80% |
| Rich in | Serine, a water-loving amino acid also found in skin's natural moisturizing factor | Glycine and alanine, small amino acids that build the silk's smooth structure |
| Dissolves in water | Yes | Only after hydrolysis |
| Chosen for | Hydration, moisture film, antioxidant support | Smoothness, soft skin feel, hair conditioning |
Recommended Applications
Our silk protein ingredients are versatile and can be used in a wide range of personal care and cosmetic formulations.
- 01Hair & Body
Cleansers
Shampoos, body washes and other rinse-off cleansers.
Key silk grades- Silk PeptideShampoos0.5–1%
- Silk Amino AcidsShampoos and body washes1–2%
- Silk Protein ComplexShampoos and conditioners0.5–1%
- 02Hair Care
Conditioners
Rinse-off conditioners, hair masks and treatments.
Key silk grades- Silk PeptideConditioners and hair masks1–3%
- Sericin Powder (High MW)Hair conditioners and masks0.3–1%
- Silk Protein ComplexHair treatments and masks1–3%
- 03Hair & Scalp
Leave-in Care
Leave-in treatments, hair mists and scalp tonics.
Key silk grades- Silk PeptideLeave-in treatments0.5–2%
- Hydrolyzed Sericin Solution 10%Hair mists and leave-in sprays1–3%
- Silk Peptide Solution 10%Hair mists and leave-ins2–5%
- Hydrolyzed Sericin (Low MW)Scalp tonics0.5–1%
- 04Skin Care
Skincare
Toners, essences, serums and moisturising creams.
Key silk grades- Hydrolyzed Sericin (Low MW)Essences and ampoules1–2%
- Sericin Powder (High MW)Moisturizing creams and lotions0.3–1%
- Silk PeptideSerums and essences0.5–2%
- Silk Amino AcidsToners and skin waters1–3%
- Silk Protein ComplexHero serums and ampoules1–3%
- 05Skin Care
Sun & Barrier Care
Barrier and after-sun care, and the texture of sunscreens.
Key silk grades- Sericin Powder (High MW)Barrier and after-sun care0.5–1%
- Silk Powder (Micronized)Sunscreens (for texture, not UV protection)1–3%
Not sure which one? Start here
- I want lightweight hydration in a water-thin productHydrolyzed Sericin (Low MW), or Hydrolyzed Sericin Solution 10% for cold process
- I want a cream or conditioner that leaves a soft, moist filmSericin Powder (High MW)
- I want smooth, silky skin feel or hair repairSilk Peptide, or Silk Peptide Solution 10%
- I want a toner or shampoo with a natural amino-acid boostSilk Amino Acids
- I want a powdery, soft-focus finish in makeup or sun careSilk Powder (Micronized)
- I want one ingredient that does bothSilk Protein Complex
What comes with every grade
- Source stated
- sericin, fibroin or blend, confirmed by amino acid profile.
- Molecular weight profile
- the full distribution, not just an average.
- Clean processing
- low salt, paraben-free, tested for heavy metals and microbes.
- Full document pack
- TDS, SDS, specification with test methods, and a CoA for every lot.
Formulating with silk? Start with a sample.
Tell us your product type and target claims, and we'll suggest the right grade and send a sample with its data sheet.