Volumising shampoo

Can you tell me the quantities to put in?

Hello, do I have to pour the entire bottle of rice protein?

Very easy recipe, however I have a question by mistake (I was too rushed) I put fucocert instead of the rice-based product. Is this a problem?

For me, this shampoo is perfect. I wouldn't say it gives volume, but it cleans my hair well, leaves it soft and clean, and I can go a week without washing it. (I have quite long and thick hair) I would add a fragrance, because it really has no scent, and it's a little lacking, especially when you don't wash your hair very often! :)

Easy to prepare, but shampoo is super hard to rinse and leaves a strange feeling on the hair... Did I miss something?