The wound-healing plant that Korean doctors used long before it became a beauty ingredient

Centella asiatica's four active triterpenoids and what each one does

Centella asiatica's primary active compounds are four triterpenoid saponins: asiaticoside, madecassoside, asiatic acid and madecassic acid. Each has a distinct documented mechanism. Asiaticoside stimulates collagen synthesis in fibroblasts and promotes wound contraction. Madecassoside is the primary anti-inflammatory compound, inhibiting NF-κB and reducing prostaglandin synthesis. Asiatic acid inhibits reactive oxygen species and has shown antifibrotic activity (preventing excessive scarring). Madecassic acid has documented barrier-strengthening activity through ceramide production stimulation. A centella serum providing all four triterpenoids simultaneously addresses barrier repair, anti-inflammation, collagen stimulation and antioxidant protection in a single application.

TOCOBO cica series: why vitamin F (essential fatty acids) was added to centella for barrier synergy

TOCOBO's cica formulas pair centella asiatica with vitamin F — a term for the essential fatty acids linoleic acid (omega-6) and alpha-linolenic acid (omega-3) that the skin cannot produce independently and must obtain from diet or topical supplementation. Linoleic acid is a critical component of ceramide synthesis in the skin — it is the fatty acid that forms ceramide 1 and ceramide 2, the dominant ceramides in the stratum corneum lipid bilayer. Linoleic acid supplementation has documented barrier-strengthening effects in clinical trials. Combining centella (anti-inflammatory and collagen stimulation) with vitamin F (ceramide synthesis substrate and barrier lipid supplementation) provides a comprehensive barrier repair formula that addresses both the inflammatory component and the structural lipid deficit of compromised skin.

Cica serum in a K-beauty sensitive skin protocol

Cica serum is the treatment serum step in a sensitive skin K-beauty routine — applied after a soothing first toner (centella or aloe-based) and before a ceramide moisturiser. The sequence is designed to layer anti-inflammatory (cica serum) and barrier-repair (ceramide cream) actives in the correct order: anti-inflammatory actives first (calming the skin surface to receive subsequent products), barrier actives second (sealing everything in). Morning use pairs with a physical SPF (zinc oxide or titanium dioxide, which are less likely to cause reactive skin sensitivity than chemical UV filters). Avoid using cica serum on the same evening as AHA or retinoid — the anti-inflammatory effect of centella partially antagonises the cell-turnover stimulation those actives require.

TOCOBO Cica Calming Sun Serum SPF50+ PA++++ 50ml — available on BuyBeautyKorea →