Psidium Guajava Fruit Extract

Psidium guajava (guava) fruit extract is primarily used as an antioxidant/soothing botanical at low concentrations, but as a complex plant mixture it contains multiple bioactive compounds (e.g., polyphenols and small aromatic constituents) that can provoke stinging or dermatitis in a reactive subset. Clinical patch-test data for guava fruit extract specifically is limited, and botanical extracts show higher real-world variability (batch differences, solvents, co-extractives) than single-ingredient humectants, so I score it as mild with occasional sensitivity possible, especially in eczema-prone skin and when layered with other actives. Safety Notes: In mass-market and prestige cleansers/toners/lotions, Psidium Guajava Fruit Extract is commonly used as a minor antioxidant/botanical support ingredient at trace-to-low levels (often ~0.001–0.1% active extract, frequently reflecting a diluted supplier solution). In consumer leave-on serums, masks, and “brightening/antioxidant” products marketed around guava, formulas can push into the 1–5% range using standardized extracts or higher-load botanical blends, with stability, color/odor, and tack typically limiting further increases. Rinse-off products generally sit at the lower end because contact time is short and botanicals are often included mainly for positioning rather than primary efficacy.