Centella Asiatica in Skincare: What Cica Actually Does
Centella asiatica — commonly called cica, gotu kola, or tiger grass — is a small herbaceous plant native to Asia that has been used in traditional Ayurvedic and traditional Chinese medicine for wound healing and skin conditions for centuries. In modern skincare, it is one of the most thoroughly characterised botanical ingredients: its active compounds are identified, their mechanisms are studied, and their clinical effects are documented in peer-reviewed dermatology journals. This distinguishes it from most plant extracts, whose benefits are claimed but rarely explained mechanistically.
Quick Answer
Centella asiatica works through four principal active compounds — asiaticoside, asiatic acid, madecassoside, and madecassic acid — that reduce inflammation, stimulate collagen synthesis, support barrier lipid production, and promote wound healing. It is particularly useful for sensitive, reactive, rosacea-prone, and post-procedure skin, and for anyone in the retinol adaptation period needing barrier support.
The Four Active Compounds and What They Do
Most botanical ingredients are described in terms of the whole extract. Centella asiatica is unusual in that its principal actives are well-characterised as individual compounds:
Asiaticoside — a triterpene glycoside that stimulates collagen synthesis in dermal fibroblasts and promotes epidermal barrier repair. It is the compound most associated with wound healing and is present in both pharmaceutical-grade preparations and cosmetic centella extracts.
Asiatic acid — a pentacyclic triterpene with anti-inflammatory activity. It suppresses pro-inflammatory cytokine production (particularly IL-1β and TNF-α) and inhibits NF-κB signalling — a key pathway in inflammatory skin conditions. This is the mechanism behind centella's effectiveness in conditions like rosacea and post-inflammatory reactivity.
Madecassoside — closely related to asiaticoside, with demonstrated antioxidant and anti-inflammatory properties. It also supports hyaluronic acid synthesis in the dermis, contributing to the plumping and hydration effects sometimes attributed to cica products.
Madecassic acid — the aglycon of madecassoside; contributes additional anti-inflammatory and collagen-stimulating activity.
Products labelled "Centella Asiatica Extract," "CICA," or "Tiger Grass Extract" should ideally standardise to one or more of these actives. Products standardised to madecassoside or asiaticoside content are more reliably consistent than those using unstandardised whole herb extract.
What Centella Asiatica Is Good For
Sensitive and reactive skin: Centella's anti-inflammatory mechanism directly reduces the cytokine-mediated redness and reactivity that characterises sensitive skin. It is hypoallergenic, fragrance-free in its pure forms, and one of the most consistently well-tolerated botanical actives across skin types including rosacea-prone skin.
Barrier repair and support: Asiaticoside stimulates ceramide synthesis and supports the formation of new barrier lipid layers. For skin with a compromised skin barrier — from over-exfoliation, retinoid adaptation, environmental damage, or eczema — centella provides meaningful structural support alongside functional ingredients like ceramides.
Redness reduction in rosacea: Multiple clinical studies have demonstrated measurable reduction in erythema (redness) and papule count in rosacea patients using centella-standardised preparations. The asiatic acid–mediated NF-κB suppression reduces the background inflammatory state that characterises rosacea. See our rosacea skincare routine guide for the full approach.
Wound healing and post-procedure recovery: Centella has the longest evidence record specifically for wound healing — pharmaceutical preparations containing centella are used clinically for scar management, burn healing, and post-surgical skin recovery. In a skincare context, this translates to reduced recovery time after chemical peels, laser treatments, and microneedling when centella is included in the post-procedure protocol.
Anti-ageing support: Collagen stimulation via asiaticoside and madecassoside contributes modest but measurable improvements in skin firmness and elasticity with consistent long-term use. The effect is not as pronounced as retinoids or clinical peptides but is additive — making centella a useful anti-ageing support ingredient for sensitive skin that cannot tolerate retinoids at effective concentrations.
Centella Asiatica vs Other Soothing Ingredients
| Ingredient | Primary Mechanism | Best For | Evidence Level |
|---|---|---|---|
| Centella asiatica | NF-κB suppression, collagen stimulation, barrier repair | Rosacea, reactive skin, barrier recovery, wound healing | Strong — identified actives, clinical trials |
| Colloidal oat | Barrier film, avenanthramide anti-inflammatory | Eczema, contact dermatitis, acute irritation | Strong — FDA-recognised skin protectant |
| Allantoin | Keratolytic, soothing, promotes cell proliferation | General soothing, wound healing | Moderate |
| Aloe vera | Mucopolysaccharide hydration, some anti-inflammatory | Sunburn, mild irritation | Moderate — active mechanism less specific |
| Niacinamide | Cytokine suppression, barrier lipid support | Acne, PIH, sensitive skin, sebum regulation | Very strong |
How to Use Centella Asiatica
Centella appears in many product categories: toners, essences, serums, moisturisers, and spot treatments. For sensitive and reactive skin, it works best as part of a deliberately minimal routine — applying a centella-rich essence after cleansing, followed by a moisturiser that also contains ceramides or centella. There are no pH restrictions or scheduling conflicts with other actives. It is compatible with retinol (and particularly useful as a support ingredient during the retinol adaptation period), AHAs, BHAs, niacinamide, and vitamin C.
One practical note on product selection: "cica" has become a marketing term that now appears on products with very little actual centella content. Look for centella asiatica extract, madecassoside, asiaticoside, asiatic acid, or madecassic acid listed in the top half of the ingredient list. A "cica" label on a product with centella listed at position 20 will deliver minimal benefit from the centella itself.