EDTA at pH 4-4.5
I am currently using EDTA in shampoo and lotion at 0.2% and the pH of both products are 4-4.5. as at pH 4-4.5 EDTA is less effective, which plan is better?
1. Increase the amount of EDTA to compensate the less effectiveness
2. Reduce it or remove it because at pH 4-4.5 EDTA doesn’t do much no matter how much i add