Rheology is the study of flow. Natural thickeners:
This is a comprehensive, practical A–Z reference for formulating natural cosmetics. Each letter maps to an essential topic: definitions, ingredients, formulation methods, safety, testing, troubleshooting, scale-up, labeling, and business considerations. Use sections as modular checklists when developing products.
Chelators (Sequestrants) bind to metal ions in water. Metals like iron and copper can catalyze oxidation, ruining your product. a-z of natural cosmetic formulation pdf
Critical Micelle Concentration (CMC) is vital for surfactants. It is the point at which surfactant molecules form micelles (spheres) that trap dirt and oil. Formulating below the CMC means the product won't cleanse; formulating above it creates foam and cleansing power.
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. Rheology is the study of flow
Distillation is the primary method for extracting Hydrosols (floral waters) and Essential Oils. Steam passes through plant material, capturing volatile compounds.
Dosage refers to the usage rate. In natural formulation, "more" is not always better. Essential oils generally have a maximum usage rate of 0.5% to 1% for leave-on products to prevent sensitization. Chelators (Sequestrants) bind to metal ions in water
Learn why anhydrous (water-free) products like balms and body oils are the best starting point for beginners. No preservatives needed, no bacteria risk—just pure oil magic.
Lanolin is wool wax. It is an incredible emulsifier but not vegan. The PDF should offer alternatives (Candelilla wax, Olive oil polyglyceryl esters). Also, note the scent issue (lanolin contains selenomethionine).