So this is my first the science behind beauty post! I already did an intro to this, so if you'd like to see that, click here. This post is going to be about the science behind salt and sugar scrubs and all that fun stuff so let's dive right in!
So first some basic chemistry. Salt is made of positive ions and negative ions (Na+ and Cl-). Easy, right? That's pretty much all you need to know so far! When you make a salt scrub, you take some oil (it doesn't matter the type, but olive and coconut are the best for your skin) and add either salt or sugar. I'll be covering salt in this post because it doesn't attract ants, but the science behind sugar is exactly the same except sugar is a covalent, polar molecule formed with Carbon, Hydrogen, and Oxygen. Oil is non polar. If you don't get polarity, I'll try and make it simple: it's an uneven sharing of electrons where one molecule is slightly more negative and the other is more positive. If you still don't get it, don't worry! It's not completely necessary for you to understand! Since "like dissolves in like", salt won't dissolve in oil meaning that it will continue to stay in crystals once you combine it. This allows for the grittiness of the scrub rather than having the salt dissolve (like it would in water).
So I hope you enjoyed this first "the science behind beauty" post! If you did, let me know in the comments below and also leave some suggestions for feature TSBB posts!