Cosmetics Formulation Development

Hello. Is it possible to combine peptides with Vitamin C and Retinal-EZ™. Do I need to add Vitamin E for synergy? If so, which Vitamin E do you prefer? Thank you in advance.

Polyglyceryl 4 Hemp Seedate (and) Caprylyl /Capryl Glucoside (and) Water 4%

Propylheptyl Caprylate 4%

Ethylexyl Stearate 2%

Corylus avellana 4%

Borago officinalis 1,3%

Shorea Stenoptera Seed Butter 1,3%

Pro Polymer™ 0,8%

Ectoine 2%

Glycerin (and) Aqua (and) Palmitoyl Dipeptide-5 Diaminobutyroyl HydroxyThreonine (and) Palmitoyl Dipeptide-5 Diaminohydroxybutyrate 1%

Glycerin (and) Aqua (and) Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate (and) Magnesium Chloride 2%

Palmitoyl Tripeptide-5 (and) Glycerin (and) Aqua 3%

Pep®-Synthe6 2%

Repair Activator™ 1%

DMI 3%

Retinal-EZ™ 5%

Perfect-C™ (Ascorbyl Tetraisopalmitat) 2%

Protec™ OX 0,01%

Mild Preserved Eco™ 1%

water

Hi,

There is no problem at all using peptides with Perfect-C as the Perfect-C is not acidic. You can't use peptide with high amount of acidic ingredients such as ascorbic acid (another type of Vitamin C)

Yes you can always use Retinal-EZ in the same formulation.

Yes you can use Vitamin E as well.

Peptides are only sensitive to very low pH or very high pH so as long as your additives aren't affecting pH, they are all OK.

Thanks a lot