Silk Peptide is a highly purified grade of natural silk derived from silk proteins. The silk has been processed by extracting the silk protein then breaking those longer chains up into shorter peptides so that have a higher substansitity to the skin and hair.
Solubility: Water, add to the water phase and preferably when cooled to 50C or lower.
Use Levels: 0.1-5%
pH Stability: The pH at which Silk peptide is neutral is 2.5 which is the lowest of most common protein derived peptide sources. The further above or below that pH your product, the more highly charged the peptides and therefore the higher the potential substantivity to the hair or skin. As most skin and haircare products are formulated at pH 4-8 this peptide is expected to have old a negative charge so the best way to ensure good adhesion is by placing it into a formula that contains a film forming thickener such as carbomer, xanthan or hydroxyethyl cellulose.
Amino Acid Composition:
Hydrophobic 33% (39% in Keratin)
Hydrophillic 13% (34% in Keratin)
Neutral 54% (27% in Keratin)
Based on the above analysis this peptide is expected to bind less moisture to the hair than Keratin but should provide the skin, including the scalp with many of the essential amino acids needed for efficient barrier protection and strength.
New Directions Australia Pty Ltd. does not supply food grade raw materials and therefore cannot waive GST.
Prior to use: Customers should always refer to the Material Safety Data Sheet / Specification Sheet OR the ingredients label as affixed to each product which are current at the time of supply of the product.
The information provided is for educational purposes only. Individuals receiving this information must exercise their independent judgment in determining its appropriateness for a particular purpose or use.
As the ordinary or otherwise use(s) of products is outside the control of New Directions Australia Pty Ltd., no representation or warranty, expressed or implied, is made as to the effect(s) of such use(s), (including damage or injury), or the results obtained. New Directions Australia Pty Ltd. expressly disclaims responsibility as to the ordinary or otherwise use(s). Furthermore, nothing contained herein should be considered as a recommendation by New Directions Australia Pty Ltd. as to the fitness for any use. The liability of New Directions Australia Pty Ltd. is limited to the value of the goods and does not include any consequential losses.