Q&A: Using vinegar in shampoo bars? Can we store surfactants and actives in the fridge? Substituting powdered surfactants in shampoo bars? Thickening aloe vera with Xanthan Gum?

I thought I’d answer a few quick questions in this post! If you’re a $5 or higher subscriber, visit the monthly Q&A to share your thoughts! USING VINEGAR IN SHAMPOO BARS? I’ve had someone ask me about why someone would be using vinegar in a shampoo bar and the short answer is that they’re using…