A-z Of Natural Cosmetic Formulation Pdf !link!

The shear stress needed to start flow. Important for lotions that should stay put (e.g., masks, thick creams). Achieved with gums or fatty thickeners.

The Cool Down Phase is where heat-sensitive actives are added once the mixture has dropped below 40 degrees Celsius. This phase typically includes essential oils, vitamins, botanical extracts, and, most importantly, the preservative system. Essential Ingredients from A to Z a-z of natural cosmetic formulation pdf