Centella asiatica extract is a widely used botanical in modern skincare, mostly for soothing and barrier-support positioning. You can formulate with it successfully by choosing the right grade, keeping typical use levels modest, protecting it from heat and oxidation, and staying within appearance- and comfort-level claims rather than drug-style language. For a brand owner or product manager, the decisions are practical and repeatable, and this article walks through each one.
What is Centella asiatica, and why do brands use it?
Centella asiatica, sometimes called gotu kola, is a plant whose extracts appear in a wide range of creams, serums and after-sun products. The constituents most often associated with the material are triterpenoids — notably madecassoside, asiaticoside, madecassic acid and asiatic acid. In cosmetics the extract is usually standardized to a certain level of madecassoside or total triterpenes, which gives brands a more consistent story to put on the label.
Brands reach for it because the positioning is easy to communicate: calming, comforting, suitable for skin that looks reactive. It is rarely the single hero active; more often it supports a soothing or barrier-care routine alongside panthenol, allantoin, niacinamide or ceramides. That supporting role is exactly why it fits so many product types without dominating the formula.
Which Centella form should you choose?
The first decision is whether to use a whole-plant extract or a purified active such as madecassoside. They are not interchangeable, and the choice changes your label claim, cost and formulation behavior. A whole extract gives a natural-origin story; a standardized or purified grade gives tighter control over what ends up in the bottle.
| Form | What it is | Typical use | Choose when |
|---|---|---|---|
| Centella asiatica leaf extract | Water or glycerin extract of the whole plant | Broad soothing positioning | You want a natural-origin story |
| Standardized Centella extract | Adjusted to a fixed madecassoside level | Consistent, claimable positioning | You need batch-to-batch uniformity |
| Madecassoside (purified) | Single isolated triterpenoid | Targeted, high-purity claim | You want a specific, named active |
| Centella callus or ferment | Culture- or fermentation-derived grade | Premium positioning | You are building a differentiated line |
None of these is inherently superior; the right pick depends on your positioning, budget and how specific you want the ingredient declaration to be.
What concentration should you plan for?
There is no single mandatory percentage. Finished-product use levels for Centella extracts commonly sit in the low single digits, and madecassoside is typically used at a lower level than the whole extract. The exact figure depends on the standardized material you buy, the supplier’s recommended range, and the product format.
Treat any number as a planning reference, not a rule. Confirm the working concentration with your supplier’s specification, because a 10% standardized extract and a 90% standardized extract are very different ingredients. Starting from the supplier’s suggested use level and adjusting through testing is more reliable than copying a percentage you saw elsewhere. Keep records of each adjustment so the final level is defensible.
How do you keep it stable in the formula?
Centella extracts can be sensitive to oxidation and may shift color over time, especially in clear or lightly tinted formulas. Madecassoside itself is reasonably stable, but it can degrade under sustained high heat or at extreme pH. A few practical habits help:
- Formulate leave-on products in a mildly acidic to near-neutral pH range, typically around 5 to 7, unless your supplier specifies otherwise.
- Add heat-sensitive grades after the bulk has cooled, following the supplier’s recommended incorporation method.
- Use an appropriate antioxidant and preservative system, since water-containing products still need microbiological protection.
- Run accelerated stability and, where relevant, color-change checks before locking the formula.
What claims can you actually make?
This is where many brands get into trouble. Centella fits most naturally as an appearance- and comfort-level ingredient, not a therapeutic one.
| Safe framing | Avoid |
|---|---|
| Helps soothe the look of temporary redness | Claims it resolves a diagnosed skin condition |
| Supports the skin’s natural barrier | Claims it changes skin structure clinically |
| Helps maintain skin comfort | Implies it addresses a medical condition |
| Helps improve the appearance of uneven texture | Positions the product as a drug rather than a cosmetic |
Keep the language at the "helps / supports / improves the appearance of" level. Crossing into disease or condition claims can turn a cosmetic into a regulated drug in several markets, which is a different and far heavier compliance burden.
How does the regulatory picture differ by market?
Centella asiatica is generally accepted as a cosmetic ingredient across major markets, but the details are not identical and they change. In China it is recognized among permitted cosmetic raw materials, and brands should confirm the current catalogue status and any usage notes. In the EU it is used within the standard cosmetic framework, with safety assessed through the normal procedure. In the US it remains a cosmetic unless specific drug claims are made. Requirements in ASEAN and other regions can differ, so confirm the position for each target market rather than assuming one global rule.
Because catalogues and interpretations move, treat the above as a starting point and verify the current status with the responsible authority or a qualified regulatory consultant before finalizing artwork.
How should you brief your manufacturer?
When you talk to a contract manufacturer, come with a clear ask: the target product format, the Centella grade and desired declaration, the positioning claims you want, the target market, and any sensory constraints such as color or fragrance. Ask for the supplier specification, the recommended use level, and stability data, then validate through your own testing.
If you are scoping a soothing or barrier-support line and want to review your formulation requirements against real production constraints, our technical team can work through the brief with you before sampling.