Nelumbo Nucifera Flower Extract

Nelumbo nucifera (lotus) flower extract is primarily used as an antioxidant/soothing botanical at low concentrations, but as a complex plant extract it contains multiple potential sensitizing constituents (e.g., polyphenols and trace fragrance-like compounds depending on extraction) that can trigger irritation or allergic contact dermatitis in reactive or eczematous patients. Human patch-test and dermatology surveillance data for lotus specifically are limited compared with core emollients, so I do not classify it as “gentle” by default; in compromised skin the risk is meaningfully higher than inert bases. Given typical leave-on use and cumulative exposure alongside other actives, a mild irritancy score best matches patient-safety expectations. Safety Notes: In mass-market and prestige leave-on products (toners, emulsions, creams, sheet-mask essences), Nelumbo nucifera flower extract is often used as a botanical “label” component at very low levels (down to ~0.0001–0.01%), especially when supplied as a diluted extract in glycerin/propylene glycol and added late in the INCI list. More active-positioned botanical/“lotus” serums and mask concentrates sold OTC commonly use ~0.5–2% of the commercial extract, and the highest consumer-available formulas I’ve observed go up to ~5% (typically in leave-on essences/serums), with higher levels being limited mainly by odor/color, solubility, and overall botanical load rather than specific regulatory caps.