Medical Disclaimer: This content is for informational purposes only and does not constitute medical advice. Consult a qualified dermatologist for personalized guidance on skin conditions including rosacea and eczema.

Commercial Disclosure: Veracil sells products mentioned in this guide.

What Is Centella Asiatica (CICA)?

Centella asiatica is a medicinal herb native to Asia that has been used in Ayurvedic and traditional Chinese medicine for centuries. In modern skincare, it is standardized around four key bioactive compounds: asiaticoside, madecassoside, asiatic acid, and madecassic acid — collectively called triterpenoids. These compounds drive its anti-inflammatory, wound-healing, and barrier-repairing effects.

"CICA" is the K-beauty shorthand for centella asiatica, popularized by Korean skincare brands. It is now one of the most widely used calming ingredients globally, with a growing body of peer-reviewed clinical evidence.

What CICA Actually Does: The Evidence

1. Anti-Inflammatory Action

Evidence Tier 1 — Confirmed in multiple studies.

Madecassoside and asiaticoside inhibit NF-κB signaling and suppress pro-inflammatory cytokines including IL-1β, IL-6, and TNF-α. Bylka et al. (2014) in Advances in Dermatology and Allergology confirmed centella asiatica’s anti-inflammatory mechanisms and clinical applications for wound healing and inflammatory skin conditions (PMID 24683369).

Honest limitation: CICA is not a replacement for prescription anti-inflammatories in severe inflammatory conditions. It is best used as a maintenance and prevention ingredient.

2. Wound Healing and Collagen Synthesis

Evidence Tier 1 — Confirmed.

Asiaticoside stimulates collagen type I synthesis and promotes fibroblast proliferation. Shukla et al. (1999) in the Journal of Ethnopharmacology demonstrated that topical centella asiatica significantly accelerated wound healing and increased collagen synthesis in animal models, with supporting human data (PMID 10624882). This makes CICA particularly valuable post-procedure (after microneedling, peels, or laser).

3. Barrier Repair

Evidence Tier 1 — Confirmed.

Centella asiatica extracts increase ceramide production and reduce transepidermal water loss (TEWL). A 2020 study in the Journal of Cosmetic Dermatology confirmed that madecassoside-containing formulations significantly improved skin barrier function and reduced TEWL in subjects with sensitive skin (PMID 31833638). For the full barrier protocol, see our Barrier Repair Protocol.

4. Redness and Rosacea Calming

Evidence Tier 2 — Early clinical research supports.

CICA’s anti-inflammatory and vascular-calming properties make it a first-line ingredient for rosacea-prone and chronically red skin. It reduces erythema without the irritation risk of stronger actives. For the full rosacea protocol, see our Sensitive Skin Protocol.

5. Scar Prevention and Fading

Evidence Tier 1 — Confirmed for hypertrophic scars.

Centella asiatica is one of the few topical ingredients with clinical evidence for hypertrophic scar prevention. Lu et al. (2012) in Burns confirmed that madecassoside significantly reduced scar formation and improved scar appearance in burn patients (PMID 22119448). For post-acne scar management, see our Post-Acne Scar Protocol.

What CICA Does NOT Do

• It does not treat active acne lesions — use salicylic acid or benzoyl peroxide for that
• It does not provide UV protection
• It does not fade established hyperpigmentation as effectively as niacinamide or tranexamic acid
• It is not a replacement for prescription treatments in severe rosacea or eczema

The CICA Protocol

The Verdict

Confirmed. Centella asiatica is one of the most evidence-backed calming ingredients in skincare, with Tier 1 evidence for anti-inflammation, wound healing, barrier repair, and scar prevention. It is safe for all skin types, including sensitive, rosacea-prone, and post-procedure skin. Use it as your primary calming ingredient during barrier repair phases and as a daily maintenance ingredient if your skin is chronically reactive.

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