Hi, I have created a formula for a lactic and glycolic acid face cream for personal use. The goal is to use this several times per week or even nightly to reduce hyperpigmentation on dark skin type and simply brighten and even tone.
My questions are:
The best chelating agent (I list the two I have in mind)
Preservative system is good for this?
Concentrations of LA and GA will be effective?
Do I really need tocopherol to help the sunflower and grapeseed oil last?
Would it help to add Potassium Azeloyl Diglycinate to the formula? I would love to use this ingredient as well.
Note, this is not meant to be the main moisturizer. It is meant to go under the main moisturizer and just act as the exfoliation treatment.
|sodium gluconate OR disodium EDTA||0.20%|
|Lactic acid 88 (5% active) ||6.00%|
|Glycolic acid 70 (3% active)||4.50%|
|Emulsifer (Cetearyl alcohol, glyceryl stearate, sodium stearoyl lactylate)||4.00%|
|ph adjuster to 3.5 - 3.8|
|Phenoxyethanol & Ethylhexylglycerin||1.00%|
Thank you for your critique.