Formulation calculators

Small calculators for the maths of making cosmetics.

• HLB blend: Pick the right emulsifier mix for your oils.
• pH adjuster: Scale a small test up to how much acid or base your batch needs.
• Dilution: Make a weaker solution from a stronger one.
• Preservative: Grams of preservative for your batch size.
• Units: Grams, ounces, millilitres, densities and temperatures.