Cosmetics Formulation Development

1. If changing from Sulfate Free Shampoo Base to Sulfate Free No-Tear Shampoo Base (pH 6, Clear, Foaming) Will the performance be very different? - Answer: From what I have tried. different things giving a bubble Sulfate Free No-Tear Shampoo Base (pH 6, Clear, Foaming) will produce a little less foam. If your skin is sensitive, recommend Sulfate Free No-Tear Shampoo Base (pH 6, Clear, Foaming) 2. Must enter Citric Acid ? Because I see that the pH is in the range of 6.5-7.5, so I assumed that it might must enter Citric Acid to adjust the pH to around 5-6.5 for use on the face. I don't know if referring to the above formula, you should enter Citric Acid how many % is good? - Reply : You can adjust it to be at pH 5.5. The amount of filling must be gradually tested and วัดค่า pH Yes, for the sake of certainty * * * Additional recommendations may include those sugar thick 1-2% to increase viscosity. or like a lot of bubbles Should add more foaming agents. Thank you.