Personal Care & Home Care Formulation Articles
Concept explainers, comparisons, and how-tos.
Articles
Cosmetic Grade vs Technical Grade: What Actually Differs and How to Verify It
"Grade" is a commercial description, not a legal classification. The same chemical sold as cosmetic grade and as technical grade may share an assay figure and differ entirely in impurity profile, heavy metal limits, microbiological control, odour and…
ReadChoosing a Rheology Modifier: Carbomer, Cellulose, Gums or Electrolyte
Five questions decide it: is the product a surfactant system or an emulsion; must it be crystal clear; how much electrolyte does it contain; what pH will it sit at; and what sensory behaviour do you want on skin or hair. Carbomers give clarity and a crisp,…
ReadWhy Salt Thickens Shampoo — and How to Build a Salt Curve Correctly
Sodium chloride thickens a sulfate-based cleanser by driving the surfactant micelles from small spheres into long, entangled rod-like structures, which raises viscosity. The effect is not linear: viscosity climbs to a peak and then falls again as more salt…
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