Terminalia Arjuna Extract

Terminalia arjuna extract is a botanical antioxidant/soothing extract typically used at low percentages, but it contains multiple polyphenols/tannins that can be astringent and can sting or irritate compromised barriers. Human patch-test data for this specific extract in leave-on facial products is limited, so safety has to be inferred from its botanical profile and the higher reactivity rate seen in eczema-prone patients with plant extracts. Given the uncertainty and the real-world potential for irritant or allergic contact dermatitis in sensitive users, I rate it as mild irritation risk. Safety Notes: In commercial skincare, Terminalia arjuna extract is most often used as a minor antioxidant/soothing botanical in multi-extract blends, where it can appear at very low levels (~0.001–0.05%) in leave-on creams/serums and even lower-contribution rinse-off products. Standalone or hero-claim Ayurvedic/phyto-active serums and masks sold OTC commonly use 1–3% extract, with some high-strength consumer formulations reaching ~5% depending on extract type (e.g., glycerin/propylene glycol extracts vs dry extracts standardized to polyphenols). There are no specific FDA/EU cosmetic maximum limits for this plant extract, so the observed upper end is mainly constrained by aesthetics, stability, and irritation risk rather than regulation.