Guides / Preservatives
Preservatives
Any water-containing formula needs a preservation strategy. This guide focuses on literacy: what preservatives do, how systems differ, and what to ask suppliers.
Why they matter
Preservatives control bacteria, yeast, and mold risk across shelf life and consumer use. Multifunctional “boosters” can help but rarely replace a complete system alone.
System design
Match spectrum, pH window, solubility, and regulatory scope to the chassis. Emulsions, surfactants, and high natural loads change what works.
Evaluation habits
Request recommended use levels, known incompatibilities, and challenge-test guidance. Document every change that could shift water activity or pH.