Let’s talk about specific gravity (relative density or specific density) – part one, what is it and how can we use it to make an awesome facial serum?

Welcome to part one of a short, three part series on specific gravity! We’ll be taking a look at what this concept is, what it means for our products, how to use it to create a facial serum and foaming hand cleanser, and how it impacts fragrance oils. First, what is specific gravity? “Relative density, specific…