Nymphaea Tetragona Extract

Nymphaea tetragona (water lily) extract is typically used at low concentrations as a soothing/antioxidant botanical, and it is not considered an inherently irritant active like acids or retinoids. However, like many plant extracts it contains multiple bioactive compounds and carries a nontrivial risk of irritation or contact allergy in highly reactive or eczematous skin, especially in leave-on products. Given that botanical extracts are a common source of unpredictable sensitization despite “calming” marketing, a conservative gentle score is appropriate for patient safety. Safety Notes: Nymphaea tetragona (water lily) extract is most often used as a minor soothing/antioxidant botanical in leave-on toners, essences, gels, and creams, where it commonly appears at very low label-impact levels (~0.0005–0.1%) as part of multi-extract blends. Higher-strength consumer products (e.g., “single-hero” calming/brightening serums, ampoules, and mask/gel products) can reach ~1–5% when the manufacturer uses a defined extract solution or dry extract at meaningful loading, while rinse-off cleansers typically sit toward the lower end due to short contact time and cost/stability considerations.