Ingredient Dossiers

Centella Asiatica for Skin: What Does It Actually Do?

The evidence behind cica for hydration, barrier support, soothing and visible skin ageing—and where the claims should stop.

By The LÜMA Team • Reviewed by: The LÜMA Team (Editorially reviewed by The LÜMA Team) • Last Reviewed: 2026-08-29 • 16 min read

Dossier Executive Summary

Centella asiatica has moved from traditional medicine into mainstream skincare under the shorthand 'cica'. Its reputation is built partly on triterpenoid compounds such as asiaticoside, madecassoside, asiatic acid and madecassic acid, which have been studied in wound-healing, inflammatory and extracellular-matrix pathways. Human cosmetic evidence is smaller but meaningful. Trials of Centella-containing formulations have reported improvements in stratum-corneum hydration, transepidermal water loss and selected barrier-related measures, while a systematic review of randomized studies found possible benefits for facial wrinkles and hydration. The important limitation is standardisation: Centella extracts can differ significantly in composition, concentration and delivery system, and many clinical formulas contain additional actives or moisturising ingredients. That means evidence for one extract or isolated compound cannot automatically establish performance for another finished product. For everyday skincare, the strongest evidence-led position is that Centella can support hydration, barrier comfort and a calmer skin feel, with some evidence for visible ageing-related outcomes. Claims that it heals skin, rebuilds collagen, treats acne or replaces medical therapy go beyond what can safely be inferred from most cosmetic evidence.

Expert Scientific Answer

Q: What does topical Centella asiatica actually do for human skin, and which claims around hydration, barrier support, soothing, collagen and anti-ageing are supported by human evidence versus mechanistic or formulation-specific research?

A: Centella asiatica contains several triterpenoid constituents, including asiaticoside, madecassoside, asiatic acid and madecassic acid. In laboratory and wound-healing research, these compounds have been associated with fibroblast activity, extracellular-matrix signalling, inflammatory pathways and antioxidant effects. In cosmetic use, the more defensible human outcomes are improved skin hydration, reduced transepidermal water loss in some formulations, improved barrier-related parameters and selected wrinkle or elasticity outcomes. However, whole-plant extracts vary substantially in composition and standardisation, and isolated-triterpene data cannot automatically be transferred to every Centella extract or finished cosmetic. Mechanistic evidence around collagen synthesis or wound healing therefore should not be converted into claims that a cosmetic product rebuilds collagen, heals damaged skin or treats inflammatory disease unless the exact product has appropriate evidence.

Section 1

Centella asiatica is a botanical species used traditionally in several Asian medical systems. In contemporary skincare, 'cica' is commonly used as a consumer-friendly label for Centella-derived ingredients.

The plant contains multiple bioactive constituents, especially triterpenoid compounds such as asiaticoside, madecassoside, asiatic acid and madecassic acid.

A whole-plant extract is not chemically identical to an isolated madecassoside ingredient or a standardised triterpene fraction. This distinction matters when interpreting clinical evidence.

Section 2

One human study evaluated cosmetic creams and hydrogels containing Centella asiatica extract over four weeks in 25 volunteers. The formulations, particularly those containing the higher tested extract level, improved stratum-corneum hydration and reduced transepidermal water loss.

A separate double-blind clinical study in Indonesian batik workers with dry skin found improvements in skin hydration measures following Centella cream use over four weeks.

These studies support Centella's role in hydration and barrier-focused formulas, but neither proves that every Centella product will produce the same magnitude of benefit.

Section 3

Skin-barrier performance is commonly assessed using measures such as stratum-corneum hydration and transepidermal water loss. Centella-containing formulations have shown favourable changes in these parameters in several human studies.

The biological rationale is broader than simple humectancy. Mechanistic research on Centella constituents has explored inflammatory mediators, fibroblast activity, extracellular-matrix signalling and tissue-remodelling pathways.

However, a cosmetic statement such as 'supports the skin barrier' is more defensible than saying Centella 'repairs a damaged barrier', because repair implies a therapeutic outcome that requires stronger product-specific evidence.

Section 4

Centella's soothing reputation is partly based on laboratory evidence involving inflammatory pathways and partly on human studies of formulations used in dry, irritated or sensitive skin.

Recent observational data on a multi-ingredient facial cream containing Centella leaf extract, ceramide and panthenol reported reductions in sensitive-skin symptoms and improvements in hydration and transepidermal water loss.

Because the tested formula contained multiple barrier-support ingredients and lacked an isolated Centella control, the results cannot be attributed to Centella alone.

Section 5

Centella's triterpenoids have been investigated in fibroblast and wound-healing models, where effects on collagen-related pathways have been reported. This is one reason the ingredient is frequently marketed for anti-ageing.

Human evidence is more nuanced. A systematic review and network meta-analysis of five double-blind randomized trials involving 172 Asian women found possible improvements in lip and periocular wrinkles and increased hydration, but also noted weak reporting and poor extract standardisation.

Another randomized study using a combination of vitamin C and madecassoside reported improvements in wrinkles, firmness, roughness and hydration over six months. Because the product combined two actives, the results cannot establish the independent effect of madecassoside.

Section 6

Centella has a substantial wound-healing research history. A systematic review identified four clinical trials and reported potential benefits across wound contraction, granulation, re-epithelialisation and wound appearance.

Those findings are relevant to understanding the plant's biology, but wound care is not the same use case as everyday cosmetic skincare.

Likewise, there is not enough evidence to present a typical Centella cosmetic as an acne treatment or scar treatment. A soothing or barrier-support role should not be confused with treating the underlying medical condition.

Section 7

The comparison is not particularly useful because the ingredients have different evidence profiles and can serve complementary roles.

Niacinamide has broad human cosmetic evidence across barrier function, tone and visible ageing. Centella contributes botanical triterpenoids with hydration, barrier-support, soothing and wound-healing research behind them.

A well-designed formula may use both rather than choose one as a replacement for the other. Direct head-to-head evidence is insufficient to claim that Centella is superior to niacinamide or vice versa.

Section 8

Centella does not require darkness to function. Its value in a nighttime formula comes from the kind of support many people want after a full day of cleansing, climate exposure, air conditioning, sweat and friction.

Hydration, barrier comfort and a calmer skin feel are rational overnight objectives, especially when Centella is combined with complementary ingredients such as ectoin, niacinamide, panthenol and selected peptides.

The evidence-led conclusion is therefore practical rather than dramatic: Centella can be a useful supporting active in an overnight formula, provided the finished product does not claim more than its own evidence establishes.

Frequently Asked Questions

What does Centella asiatica do for skin?

The best-supported cosmetic roles are hydration, barrier-related support and skin comfort. Some human studies also report wrinkle or elasticity benefits, but these findings depend on the specific extract and formulation.

Is Centella asiatica the same as cica?

Cica is a common skincare shorthand for Centella asiatica-derived ingredients. However, whole extracts, purified madecassoside and other Centella fractions are not chemically identical.

Is Centella good for sensitive skin?

Centella is commonly used in soothing and barrier-support formulas, and some human studies report favourable sensitive-skin outcomes. Individual tolerance still depends on the complete formula.

Does Centella help wrinkles?

A systematic review of randomized trials found possible improvements in periocular and lip wrinkles, but extract standardisation and reporting limitations mean the evidence should be interpreted cautiously.

Can Centella be used with niacinamide?

Yes. There is no established general incompatibility, and the two can be complementary in barrier-support and overnight skincare formulas.

Can Centella be used with ectoin and peptides?

There is no established general incompatibility between these ingredient categories in properly formulated skincare. Their combined performance depends on the finished formulation, and synergy should not be assumed without testing.