Citrus Glauca Fruit Extract

Citrus glauca (Australian finger lime) fruit extract is typically used at low concentrations as an antioxidant/brightening botanical, but citrus-derived extracts can contain small amounts of organic acids and volatile compounds that increase stinging risk on compromised or eczematous skin. Clinical experience with sensitive-skin populations shows botanicals and citrus family derivatives have a meaningful rate of irritant reactions compared with inert humectants, especially when layered with other actives, so I score it as a moderate irritant requiring patch testing. Safety Notes: In commercial skincare, Citrus glauca (Australian desert lime) fruit extract is most often used as a minor botanical/antioxidant support ingredient at trace-to-low levels (commonly around 0.01–0.5%), with the lowest observed use in complex fragrance/botanical blends and “label-claim” inclusion down to ~0.0001%. Higher-strength consumer products (especially leave-on serums/essences or “native Australian extract” boosters) can push total extract to ~1–5% depending on the supplier’s extract format and active-solids content; rinse-off products typically sit toward the lower end due to cost/benefit and wash-off dilution. No specific global maximum is set for this extract, so practical market limits are driven by stability, odor/color, and irritation risk from citrus-associated components rather than regulation.