A surfactant made from hydrolysed silk protein and lauric acid.
What it is
Sodium lauroyl hydrolyzed silk is the sodium salt of hydrolysed silk protein acylated with lauric acid (dodecanoyl groups), a protein-based anionic surfactant. CosIng lists it as an antistatic, hair-conditioning, skin-conditioning and cleansing-surfactant ingredient.
Where it is used
Appears on the ingredient lists of a small number of cleansing and hair care products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
Functions
- Antistatic
- Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.
- Hair conditioning
- Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
- Skin conditioning
- Maintaining the skin in good condition.
- Surfactant – cleansing
- Wetting body surfaces, emulsifying or solubilizing oils, and suspending soil (generally, such ingredients contribute to the foaming and lathering properties of cleansing products).
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

