Madecassic Acid

How it works

Madecassic acid is a triterpene from Centella asiatica, the plant sold as cica, gotu kola or tiger grass. Centella contains four of these compounds that matter for skin: asiatic acid and madecassic acid, and their sugar-bearing forms asiaticoside and madecassoside. Madecassic acid is an aglycone — the form without the attached sugar.

Its documented activity is anti-inflammatory. Centella preparations reduce IL-1β, IL-6, TNF-α, prostaglandin E2 and COX-2 activity, and they push fibroblasts toward collagen synthesis and extracellular-matrix remodelling. In a formula that translates into calmer, less reactive skin and better repair of a compromised barrier — which is why cica products are positioned for irritation rather than for any single visible concern.

The evidence

Here is the honest picture, and it is the reason this page exists. Nearly all the clinical work is on the MIXTURE, not on madecassic acid alone. TECA — titrated extract of Centella asiatica, a reconstituted blend of asiatic acid, madecassic acid and asiaticoside — has been used in European wound care for decades, and the controlled work behind it is on that blend: increased collagen, DNA and protein content in wound chambers, and altered expression of angiogenesis and matrix-remodelling genes.

Where individual compounds have been separated out, the burn-healing effect tracks most strongly with asiaticoside and madecassoside, while the aglycones — asiatic and madecassic acid — are studied mainly for anti-inflammatory and pro-apoptotic effects in cell systems. So madecassic acid is a real active with a real mechanism, but a product claiming clinical results for it alone is borrowing evidence earned by the mixture.

Suitability

• Reactive, irritated or over-exfoliated skin — the primary use
• Compromised barrier and post-procedure recovery, the setting TECA was built for
• All skin types; the centella triterpenes have a low irritancy profile

Concentration

Usually present as part of a standardised centella extract rather than dosed alone, so the meaningful label detail is whether the product states a triterpene content at all. One that names its extract and its standardisation is telling you more than one that lists “Centella Asiatica Extract” down in the fragrance zone of the list.

Conflicts & combinations

No conflicts. It pairs naturally with the things that cause the irritation it addresses — retinoids, acids, benzoyl peroxide — and with barrier ingredients like ceramides and panthenol. Centella allergy exists but is uncommon; if a cica product stings on intact skin, the alcohol or fragrance around it is the likelier cause.