Designing your products as a line: Shampoo – hydrolyzed proteins and amino acids

I love including hydrolyzed proteins in my shampoo, but is there a point in using it if you’re including  it in your conditioner? I admit that I have a huge weakness when it comes to proteins in my products. I kinda collect them – I’ve used many different ones, including hydrolyzed oat protein, hydrolyzed silk … Read more