Chemistry: Fatty alcohols, like cetyl or cetearyl alcohol (part 16)

Welcome to part sixteen of this series on learning chemistry! I will warn you that this is a huge post because I’m not sure where I need to separate it into other posts, so I’m just leaving it here. Please don’t be overwhelmed by it. Part of the size is the summary of what we’ve...

This content is for Foundation, Formulation, and Innovation members only.
Subscribe
Already a member? Log in here

Chemistry fun: How to read a molecule! (Updated May 14, 2025)

On this site and in my e-books,  I’ve been sharing diagrams of molecules to show you how their shape or composition affects the viscosity, surface tension, melting point, and other properties. I’ve realized I haven’t shared how to interpret these if you haven’t taken a chemistry class or if it’s been ages, so let’s do...

This content is for Foundation, Formulation, and Innovation members only.
Subscribe
Already a member? Log in here

Emulsifiers you will love: What’s the deal with methyl glucose sesquistearate (TEGO® Care PS MB), an emulsifier found in Brazilian Bum Bum cream?(Updated May 12, 2025)

In the monthly Q&A, Kristina asked, Me again ;), I’ve decided to go back to “basics” for a minute. I have hit a wall and have gone back to product studies to try and ferret out some mysteries (which isn’t a very scientific word I know 😂). Question: Methyl Glucose Sesquistearate – this is an...

This content is for Foundation, Formulation, and Innovation members only.
Subscribe
Already a member? Log in here

Demythifying the myths: Are Germall Plus and Germaben II preservatives banned?

Six plastic bottles containing preservatives sit atop a metal plate on a digital scale

You may have heard Washington state, USA, has banned Germall Plus (liquid and powder, Germaben II, and TRIstat D2, so let’s get into what all of this means. Before we start… You can learn even more in the massive preservatives section of this site, found under the “ingredients” tab in the menu bar. I’ve written...

This content is for Foundation, Formulation, and Innovation members only.
Subscribe
Already a member? Log in here

Chemistry: More on glycerin and glycols (alcohols) and why this matters to cosmetic chemistry – part 15

This is the proper photo of propanediol 1,3, a clear liquid in a plastic 30 ml cup on the brown countertop.

Welcome to part fifteen of this series on learning chemistry! In part one, we looked at the resources and materials we need to study chemistry. In part two, we learned the parts of an atom – protons, neutrons, and electrons! In part three, we learned about ions and valence shells. In part four, we learned...

This content is for Foundation, Formulation, and Innovation members only.
Subscribe
Already a member? Log in here