Glossary
Substances derived from natural sources that prevent or slow microbial growth and oxidative degradation in skincare products. Common natural preservatives include vitamin E (tocopherol), rosemary extract, grapefruit seed extract, and certain essential oils. However, the most effective natural preservation strategy is eliminating water from the formulation entirely.
Any product containing water is susceptible to microbial growth. Bacteria, yeasts, and molds thrive in moist environments, and without preservatives, a water-based lotion or cream can become contaminated within days to weeks. This is not just unpleasant; contaminated cosmetics can cause serious skin infections.
The need for preservatives is one of the fundamental challenges of water-based skincare formulation. Effective preservation requires either synthetic chemicals (parabens, phenoxyethanol, formaldehyde releasers) or natural alternatives (which tend to be less effective alone and may require multiple agents and specific pH conditions to work).
The cleanest way to solve the preservation challenge is to remove water from the formula entirely. In a product with zero water content, microbial growth is impossible because all microorganisms require water (specifically, a water activity above 0.6) to survive and reproduce.
This is the approach Goodfriend Honey Co. uses in every product. Our lotion bars, body butter, facial balm, lip balm, and tattoo balm contain only beeswax, natural butters, oils, and essential oils. No water means no bacteria, no mold, no yeast, and no need for any preservative, natural or synthetic. The only antioxidant we add is vitamin E (tocopherol) to prevent the oils from going rancid, which is oxidation, not microbial growth.
No. Vitamin E (tocopherol) is an antioxidant that prevents oils from going rancid. It does not kill or inhibit bacteria, yeast, or mold. It cannot replace a true preservative in any product containing water. This is a common misconception in natural skincare.
Generally, no. Individual natural preservatives are typically less effective than synthetic options like parabens or phenoxyethanol. Effective natural preservation of water-based products usually requires combinations of multiple natural antimicrobials at specific pH levels, which can be complex and expensive to formulate.
Microorganisms require water to grow, measured as water activity (aw). Products with water activity below 0.6 cannot support microbial growth. Anhydrous (water-free) products made entirely of waxes, oils, and butters have essentially zero water activity, making them naturally preserved.
Keep Learning
Browse hundreds of terms covering honey, beekeeping, and natural skincare.