Cosmetics Formulation Development

Because doing it for the first time I want everyone to help me check. Ingredients Sulfate Free Shampoo Base (pH 7, Clear, Foaming) 20% Encapsulated Salicylic Acid (Liquid, Timed-Release, Wash-Off) 4.3% Mild Preserved Eco™ ( Preservative-Free ) 1% น้ำกลั่น 75.7% After mixing everything together, put it in a bottle and leave it for 24 hours. Try it and the bubbles are quite low. But the cleansing performance is quite ok. So I want to know which step or the quantity of the ingredients is not correct I would like advice from everyone, thank you.

Ours uses Sulfate Free Shampoo Base (pH 7, Clear, Foaming) 30%, there will be more foam than in the picture. May have to adjust to put more or put a foam booster.

Hello, please consider adding Cond-Foam 5-10% will help increase the bubble well.