Hydrolyzed Silk Protein

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Hydrolyzed Silk Protein

Preserved with Phenoxyethanol and Potassium Sorbate.

Our new Hydrolyzed Silk Protein preserved with phenoxyethanol and potassium sorbate, is a great way to add superior moisturizing benefits to hair and skin formulations. Try adding it to moisturizers, cleansers and skin treatments, or to cosmetic formulations to keep skin feeling soft and silky. Hydrolyzed Silk Protein may also be added to shampoos, conditioners and hair serums to create a silky smooth feeling on hair and prevent moisture loss. Hydrolyzed Silk Protein offers the formulator excellent film-forming properties, rendering it an effective moisturizer.

What is a "hydrolysate?" A hydrolysate is a product of hydrolysis. Hydrolysis is a scientific/ chemical  process by which a substance is broken down typically using an acid or water. A Hydrolysate of a protein (like wheat, oat, silk etc..) has special applications in personal care products since it allows the product, with the hydrolysate added, to absorb more quickly in to hair or skin. The hydrolysate contains certain amino acids from whichever protein used and those will be absorbed more rapidly than the intact proteins by the outermost keratin (protein) layer of skin or hair, thus maximizing nutrient delivery to the intended place. The amino acids will also bond with the keratin layer to create a barrier, assisting in moisture retention. So if you are making a hair care product with a protein hydrolysate, the amino acids will be absorbed more quickly and be more beneficial.


Typical usage rate is 1.0% to 10.0%

Applications: Increases Shine, Anti-Frizz capabilities, Improves overall feel, Conditions 


AC Silk Hydrolysate is REACH Compliant and free of the following:


  • Formaldehyde or formaldehyde donors
  • Parabens
  • Glycol ethers
  • Paraffin 
  • Gluten
  • Phthalates
  • Lactose
  • Polyethylene glycol (PEG)
  • Nanoparticles
  • Residual solvents
  • Nitrosamines
  • Sulfates
  • Palm oil/palm kernel oil (or derivatives)
  • Volatile organic compounds


  • water-soluble
  • Strong moisture binding properties
  • relatively neutral pH to prevent skin irritation.
  • does not contain genetically modified organisms 

Product Data, INCI Name and CAS No.

  • INCI Name: Hydrolyzed Silk
  • CAS no: 96690-41-4
  • EINECS no.: 306-235-8


  • Appearance: Clear to Slightly Hazy Light Yellow Liquid
  • Odor: Characteristic 
  • pH: 3.50 – 6.00
  • Solids: 18.0 - 23.0 %
  • Specific Gravity: 1.05
  • Solubility: In Water - Soluble
  • Passes for all specifications . Certified to not contain heavy metals, pathogens, bacteria.

Use in Cosmetics and Shampoo Crafting


Silk Protein Hydrolysate is a useful addition to many personal care formulations including:

  • Body Wash
  • Conditioners
  • Cosmetics
  • Eye Creams
  • Facial Cleaner
  • Foundations
  • Hair Care
  • Hair Conditioner
  • Mascara
  • Masks Cosmetic
  • Moisturizing Cream Formulations
  • Nail Care
  • Shampoo
  • Shower Gels
  • Skin Care Products


Keep in a cool (preferably below 85°F, the cooler the better), dark and dry store-room.

Shelf Life

Under optimal storage conditions, in original unopened drums/containers, minimum 1 year.

Safety Data Sheet

2 Reviews Hide Reviews Show Reviews

  • 5
    Hydrolyzed silk

    Posted by Tessa Holmes on Sep 6th 2020

    Affordable and works perfectly. I followed the suggestions and I have no complaints!

  • 4
    Silk Liquid Peptide

    Posted by Colleen bullis on Jan 17th 2020

    I'm only doing 4 stars as I have not used any in my topical rubs as of yet. The smell is kind of strong, but I will be mixing with essential oils, so it should be fine. I usually use the silk peptide powder, but thought the liquid may be better for my topicals. I'll review again after my first new batch. Came looking like the photo, I used the powder before and loved it, leaves you skin feeling like silk.