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A complete guide to centella asiatica in skincare — the four key bioactive compounds (asiaticoside, madecassoside, asiatic acid, madecassic acid), how asiaticoside and madecassoside stimulate TGF-β signaling to upregulate collagen synthesis in fibroblasts, the wound healing evidence (Bylka 2014), anti-inflammatory mechanisms, why centella is particularly effective for sensitive, barrier-compromised, and post-procedure skin, the CICA designation in K-beauty, and how to evaluate centella products by extract type.
· By MedSpot Editorial · 5 min read
Centella asiatica — known in skincare as "cica," "gotu kola," or "tiger grass" — is a wetland herb with one of the longest documented wound healing histories of any plant used in medicine. Its K-beauty popularization brought it to mainstream skincare, but the underlying biology is substantive. Here is the complete evidence-based guide.
Centella asiatica (L.) Urban (family Apiaceae) is a creeping herbaceous plant native to tropical Asia and parts of Africa. It has been used in Ayurvedic, traditional Chinese, and African healing traditions for millennia — wound healing, skin conditions, and connective tissue disorders.
The plant's bioactivity is concentrated in four primary triterpenoid compounds (collectively "centelloids"):
Different centella extracts contain different ratios of these compounds — this matters significantly for product quality.
The primary mechanism behind centella's wound-healing efficacy:
Asiaticoside can also stimulate new blood vessel formation (angiogenesis) at wound sites — improving nutrient and oxygen delivery during healing.
Madecassoside's collagen role: Separately from asiaticoside, madecassoside promotes fibroblast proliferation and collagen synthesis through ERK/MAPK signaling pathways — parallel mechanisms reinforcing the same outcome.
NF-κB inhibition: Asiatic acid and madecassic acid inhibit NF-κB — the central transcription factor controlling pro-inflammatory cytokine production. This reduces IL-1β, TNF-α, and IL-6 in inflammatory conditions.
COX and LOX inhibition: Centella extracts inhibit both cyclooxygenase (COX) and lipoxygenase (LOX) pathways — reducing prostaglandin and leukotriene production (the same dual-pathway inhibition seen in anti-inflammatory botanicals like chamomile and calendula).
TEWL reduction: Madecassoside and asiaticoside support the production of key structural proteins (involucrin, filaggrin) that maintain the stratum corneum barrier — reducing transepidermal water loss in compromised skin.
Bylka W, Znajdek-Awizeń P, Studzińska-Sroka E, Brzezińska M. (2014). Centella asiatica in cosmetology. Postepy Dermatologii i Alergologii, 31(1), 46–49.
Systematic review of centella asiatica in dermatological applications:
Multiple small RCTs and clinical studies support centella in:
Post-laser and post-procedure: Centella is increasingly used in clinical skincare protocols after ablative laser, microneedling, and chemical peels — the anti-inflammatory and collagen-stimulating combination is ideal for the post-procedure recovery window.
A 2015 study (Hashim et al.) showed that topical madecassoside cream over 12 weeks produced significant improvement in fine lines and skin elasticity, with measurable collagen density increase on ultrasound. The collagen-stimulating mechanism of centelloids extends beyond wound repair into anti-aging.
Centella's combination of properties is uniquely suited to irritated, reactive, and compromised skin:
This makes centella appropriate during:
"Cica" in Korean beauty refers to centella asiatica extract — the name derives from "cicatrice" (French for scar/wound healing). CICA-labeled products are marketed primarily for:
The CICA category is marketing-driven, but the underlying centella asiatica ingredient is substantive. The key variable is whether the product uses a high-quality centella extract with meaningful centelloid content.
Centella asiatica extract (TECA): The pharmaceutical-grade "titrated extract of Centella asiatica" — standardized to specific concentrations of the four centelloids. This is the extract used in clinical studies and pharmaceutical wound healing products. Look for TECA or standardized centella on the ingredient list.
Centella asiatica leaf extract: Whole-plant extract — contains centelloids but at variable, non-standardized concentrations. Lower quality assurance than TECA; may still be effective.
Hydrocotyl (alternate name): Centella asiatica is also listed as "hydrocotyl" in some ingredient lists — the same plant.
Isolated centelloids: Some premium products list asiaticoside, madecassoside, asiatic acid, or madecassic acid as specific ingredients — more potent and better characterized than whole-plant extracts.
Concentration on lists: Centella extract often appears mid-to-late on ingredient lists. Unlike some actives, centella is bioactive at relatively low concentrations — position alone is not a reliable indicator of efficacy. Extract quality matters more than mass percentage.
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