
Safe Formulating
Homemade Cosmetic Preservatives: The Honest Limits
A homemade cosmetic containing water, aloe, hydrosol, tea, milk, juice, or another water-rich ingredient needs more than refrigeration or a clean jar: it.
Water changes the microbiology problem. Once it enters a cosmetic, a nice-smelling oil and a clean spoon are not a preservation system. We keep DIY scope narrow, calculate every gram, avoid drug claims, and tell you when a qualified formulator and laboratory must take over.

A homemade cosmetic containing water, aloe, hydrosol, tea, milk, juice, or another water-rich ingredient needs more than refrigeration or a clean jar: it.

For a simple 100-gram water-free body oil, combine 45 grams high-oleic sunflower oil, 30 grams jojoba, and 25 grams squalane in a clean, completely dry.