Carotenoids are tetraterpenoids, which are a large and varied class of hydrocarbons produced by plants, particularly conifers (wow, that sounded text-booky, eh?) They are either carotenes (oil soluble) or xanthophylls (more polar, water soluble with oxygen functional groups) with 40 carbon atoms. I’ll be going into more detail about terpenes and terpenoids in the near...

Vitamin A – what is it good for in bath & body products? It’s an oil soluble molecule that can improve skin barrier function, increase cell proliferation, increase thickening of the skin, and increase collagen production. It can also help increase skin’s water retention, and it may be effective in preventing, retarding, or restoring changes...