Spilanthes Acmella Flower Extract

Spilanthes acmella (often marketed as “botox-like”) is a botanical extract used in low percentages for smoothing/firming, but it contains bioactive alkamides (e.g., spilanthol) that can be irritating and has documented potential for contact dermatitis in sensitized individuals. As with many plant extracts, variability in composition and the presence of multiple reactive constituents increases unpredictability for eczema-prone or highly reactive skin, especially with leave-on use. Given the non-essential benefit and real, if infrequent, irritation/sensitization risk, it is best classified as mild rather than gentle. Safety Notes: In commercial leave-on products (anti-wrinkle/“instant tightening” serums, eye creams, moisturizers), Spilanthes acmella flower extract is frequently used at very low levels (≈0.01–0.1%) as a marketing/booster botanical within a multi-extract complex, consistent with typical supplier recommended-use ranges and INCI-list positioning. Higher-strength consumer products—especially “botox-like” or firming concentrates and ampoules—are observed using ~1–3% extract, with a practical upper market end around 5% for standardized extracts before odor, color, and stability/skin-feel constraints become limiting; rinse-off formats generally sit at the low end because contact time is short.