Madecassoside

Madecassoside is a Centella asiatica-derived triterpenoid glycoside used primarily for anti-inflammatory, barrier-support, and soothing effects, typically at low concentrations (about 0.05–0.5%). In clinical use and patch testing, it is generally well tolerated and is often included in products for reactive or compromised skin, with irritation events being uncommon. Because botanical-derived actives can still trigger occasional idiosyncratic reactions in highly eczema-prone patients (especially in complex formulas), I score it as very gentle rather than exceptionally gentle. Safety Notes: In mass-market and dermocosmetic leave-on products, madecassoside is often used at very low levels (around 0.005–0.02%) as a supporting soothing/repair active alongside Centella extracts, and it also appears in some rinse-off cleansers at similarly low levels due to limited contact time. Clinical/technical use-levels and multiple commercial “Cica” balms/serums commonly sit around ~0.05–0.2% madecassoside, while a smaller set of consumer-available high-strength specialty formulations (typically leave-on creams/serums) push toward ~0.5% before solubility, cost, and sensorial/stability constraints become limiting. No specific global maximum is set for madecassoside in major cosmetics regulations, so the observed upper end is primarily constrained by formulation practicality rather than a hard legal cap.