TL;DR
Asiaticoside is one of four active fractions inside centella asiatica. It pushes wound repair and collagen turnover, while madecassoside handles the calming. Most products labelled centella use a mixed extract, so the asiaticoside content is unknown. For repair work, look for standardized titrated extracts (TECA, CICA-care) where asiaticoside sits near 30 percent.
Centella has become the calm-button ingredient of the late 2020s. Korean serums, French pharmacy creams, drugstore moisturizers, all of it. What almost nobody outside the formulator side mentions is that centella is not one molecule. It is four, doing four different jobs, and the one you actually want depends on whether your skin is irritated or actively healing.
What asiaticoside actually is
Centella asiatica leaves contain four major triterpenes: asiaticoside, madecassoside, asiatic acid, and madecassic acid. The first two are the glycosides (sugar-bound, water-friendly). The last two are the acids (fat-friendly, sit deeper in the skin). Each one was isolated and studied separately, mostly out of French and Korean labs from the 1970s onward.
Asiaticoside is the wound-repair fraction. It signals fibroblasts to produce type I and type III collagen, accelerates re-epithelialization, and shows up in scar-modulating creams sold across European pharmacies. Madecassoside is the anti-inflammatory cousin, which is what almost every cica serum is really doing when it claims to calm redness in three days.
What the real numbers look like
A 2013 review in Indian Journal of Pharmaceutical Sciences (republished via PubMed) compiled wound-healing trials on TECA, the titrated extract of centella, which is roughly 40 percent asiaticoside and 60 percent the other three fractions. Across burn, surgical, and chronic ulcer trials, mean wound closure improved by 27 to 32 percent versus standard care over four to six weeks. That is genuinely strong, and stronger than what madecassoside alone produces.
For ordinary skincare context, the relevant takeaway: asiaticoside earns its slot when there is actual repair work to do. Post-procedure skin. A scar that is still remodelling. Barrier damage from a retinoid overshoot. It is overkill for a quiet face on a Tuesday.
Why most centella products do not specify the fraction
This is where I get frustrated with the category, honestly. A bottle that says “4 percent centella asiatica extract” tells you almost nothing. The extract could be 40 percent asiaticoside or 4 percent. It could be all madecassoside. It could be the cheap aerial-parts extract with the triterpenes barely registering.
The brands that take this seriously will list TECA, Centella Asiatica Selected Triterpenes, or a numbered standardization on the INCI list. Avene Cicalfate and La Roche-Posay Cicaplast use titrated material. So does Dr Jart Cicapair. Beyond those, you are largely trusting marketing. INCI lists decoded walks through how to read this without taking the front-of-label claim at face value.
Most centella products work, but not for the reason you think
Here is the contrarian piece. Nine out of ten centella serums on the K-beauty shelf are doing redness reduction, not wound repair. That is the madecassoside half doing the work. The product feels calming because madecassoside is genuinely anti-inflammatory, and your skin felt provoked. That is fine. It is just not what asiaticoside is for.
If you bought a centella product expecting it to fade an old scar, you were sold the wrong fraction. Tretinoin or microneedling are still doing more collagen work than any topical centella will. Asiaticoside is the supporting actor for repair, not the lead.
How I use it in practice
Post-microneedling, post-peel, post-anything-that-injured-the-skin-on-purpose, a TECA cream goes on twice daily for ten to fourteen days. That is its real moment. Outside of repair windows, I would rather use a quieter sensitive-skin routine and save asiaticoside for when there is something to repair.
For something more passive day-to-day, our BioCell Renewal Cream layers asiaticoside with peptides and ceramides, so you get the repair signal without having to chase a separate scar treatment. See more under barrier damage for adjacent reads.
One last note. Five words: read the INCI, not the front.
FAQ
Is asiaticoside safe in pregnancy? Topical use of standardized centella extracts is generally considered low risk, but data on the isolated asiaticoside fraction in pregnancy is limited. Check with your obstetrician.
Can I use it with retinol? Yes, and it pairs well. Asiaticoside helps offset retinoid-related barrier disruption, which is why it appears in calming retinoid creams.
How long until I see results? For wound repair, two to four weeks. For scar remodelling, eight to twelve weeks, and even then results are modest.
Is centella the same as gotu kola? Yes, same plant. Gotu kola is the traditional Ayurvedic name.
Does asiaticoside cause purging? No. It is not an exfoliant or follicular irritant. It is one of the gentler actives in skincare.
Sources: PubMed / Indian Journal of Pharmaceutical Sciences (2013) review on Centella asiatica wound healing; NIH PMC on titrated extract of Centella asiatica (TECA).