Centella Asiatica: Four Fractions and One Marketing Word

Centella asiatica is sold as cica, tiger grass, gotu kola and madecassoside, and those names describe different products. A whole-plant extract at 0.5 percent is a soothing botanical with a weak evidence base. A purified madecassoside fraction at 0.1 to 0.2 percent is a studied active with published work on barrier and redness. The label rarely makes the distinction.

1. The fractions

The four triterpenoids that matter are asiaticoside, madecassoside, asiatic acid and madecassic acid. A standardised extract usually declares a total triterpenoid content of 10 to 40 percent; a purified fraction declares one compound. Buying “centella extract” without a specification is buying a variable raw material.

2. Dose and effect

Soothing claims are supportable from 0.5 to 2 percent of a standardised extract. Barrier and redness claims need the purified fraction and a panel test. A product with 0.1 percent of a 10 percent extract is carrying roughly 0.01 percent triterpenoids, which is a label ingredient rather than an active.

3. Colour and the green problem

Whole-plant extracts are brown-green and vary by harvest. In a white cream, 1 percent of a dark extract produces a beige tint that differs between lots. Brands that want a clean white product usually switch to the purified fraction, which is nearly colourless and far more consistent.

4. Stability and pH

Triterpenoids are stable in a neutral emulsion and sensitive to strongly acidic conditions. A centella product at pH 5 to 6 holds its assay; one at pH 3.5 loses a measurable fraction over twelve months. Light also degrades the extract, so an opaque pack extends the shelf life.

5. The allergen question

Centella is a plant in the Apiaceae family and carries a small allergen risk. Reactions are uncommon and usually mild, but a product marketed to sensitive skin should still carry a patch test result rather than an assumption. The same applies to any botanical at a meaningful dose.

6. Claim language

“Cica” has become a generic term for soothing, and regulators increasingly ask what it means. The defensible claims are soothing, comfort and reduction in the appearance of redness, each with panel data. Claims about healing are medical and should be avoided outside the appropriate regulatory pathway.

7. Texture in a white emulsion

A standardised centella extract at 1 percent is enough to tint a white cream beige, and the tint varies between harvests. Brands targeting a clean visual usually move to the purified fraction or accept a beige product and design the pack around it. A tinted cream that drifts between batches is a return driver in premium retail, where the same shelf holds two lots side by side.

8. Cost and the marketing trade

Purified madecassoside costs several times a standardised extract per kilo of active. A brand that wants the story and the price point usually compromises at 0.5 percent standardised extract, which delivers a mild soothing effect and a good label. That is a legitimate decision if the claim matches the dose.

9. Where it fits

Centella products sit across the cream range; the botanical stability question connects to the preservation entry.