Formulation Advice

Thank you for sharing your positive experience with Repair Activator + Matrixyl 3000 and Activated Resorcinol. It's great to hear about the visible results you've achieved.

Regarding your question about mixing Perfect-C (Ascorbyl Tetraisopalmitate) with the new Transdermal Gel base:

Yes, you can mix Perfect-C with the Transdermal Gel base. Perfect-C is an oil-soluble Vitamin C derivative, and it should be mixed into the oil phase of your formulation, which in this case would be the oil component of the Transdermal Gel.

As for adding Disodium EDTA to the water phase of the Transdermal Gel base, it is recommended. Disodium EDTA acts as a chelating agent, helping to bind metal ions that may be present in the water. This helps to improve the stability of the overall formulation, particularly for sensitive ingredients like Vitamin C derivatives, preventing potential degradation or discoloration. The recommended usage rate for Disodium EDTA is typically 0.1-0.2%.

Mixing Perfect-C into the oil phase first and then combining it with the water phase containing Disodium EDTA is a suitable approach for incorporating these ingredients into your base.