Cosmetics Formulation Development

Tetrasodium Pyrophosphate (?) Disodium Phosphate (0.03%) Phosphoric Acid (0.03%) Sodium Stannate (0.03 %) Do you have any of these substances? Are you in any tradename? This part is just the developer's father? More? Active Protex OX with ascorbic acid just for use in colorant? If used in dyes with two primary oxidation, e.g. PPD (0.27%) and DPE (0.665%) and three couplers e.g. MAP (0.275%), RL (0.275%), TDS (0.55%) The expected quantity of black

Hello, the usage rate must be adjusted. Since it depends on many factors, the permanent color group is important to the packaging. Using Antioxidant Too much Antioxidant may result in less tint on the hair.

Ask if you want to make black, which one should I use? At what concentration?