Madecassoside

Madecassoside is a terpenoid saponin isolated from Centella asiatica and the most studied of its four active compounds (the "madecassosides"). It calms inflammation by moderating inflammatory mediator release, stimulates collagen type I synthesis, and accelerates wound healing — a combination ideal for reactive, sensitised, or blemish-prone skin. French pharmacy brands built entire soothing lines around it, often at 0.1–1%. Madecassoside also reduces post-inflammatory hyperpigmentation risk by calming lesions faster. Apply morning and night; it layers with everything and never irritates. For skin that overreacts to actives, it is the rational first choice.