TL;DR: Centella asiatica — also called gotu kola, also branded as cica — has the strongest clinical evidence of any K-beauty soothing ingredient. Here's the long version.
Quick answer
Centella asiatica is a herb used in traditional Asian medicine for centuries and now central to Korean dermatology. Its active compounds — madecassoside, asiaticoside, asiatic acid, and madecassic acid — have documented anti-inflammatory, wound-healing, and barrier-supporting effects. Used at 1 to 10% concentrations in serums and creams. It’s the most evidence-backed soothing ingredient available for sensitive, reactive, post-procedure, and barrier-damaged skin. Not a miracle. Just a quiet, useful workhorse.
What it actually does
Three documented effects, and they’re related.
Anti-inflammatory. Madecassoside in particular suppresses pro-inflammatory cytokines (IL-1β, TNF-α) at concentrations you can hit in topical skincare. That translates to less redness, calmer reactive skin, and faster recovery from inflammation.
Wound healing. Centella has been used clinically — sometimes topically, sometimes orally — for burns, scars, and surgical wound recovery. The mechanism involves stimulating collagen and glycosaminoglycan synthesis at the dermal level.
Barrier support. Strengthens the lipid layer of the stratum corneum, supports microbiome balance, and reduces transepidermal water loss when the barrier is compromised.
The combination is what makes centella unusually versatile. It helps active inflammation, supports recovery, and earns its keep as quiet daily maintenance.
The actives
A respectable centella product names specific actives, not just “centella extract.”
Madecassoside — the most widely studied of the four. Strongest anti-inflammatory action.
Asiaticoside — wound healing, collagen synthesis support.
Asiatic acid — antioxidant, mild brightening.
Madecassic acid — supports skin firmness.
Korean formulations often include all four, sometimes labeled as TECA (titrated extract of centella asiatica). Western formulations more often rely on a single isolated active or a whole-plant extract.
Who benefits
Sensitive or reactive skin, as a daily core ingredient.
Rosacea-prone skin, where the redness reduction is real.
A damaged barrier during the recovery weeks.
Post-procedure skin — after lasers, peels, microneedling, or the retinization weeks of starting a retinoid.
Acne-prone skin, where centella adds an anti-inflammatory layer to the routine without replacing the workhorse actives.
Eczema-prone skin, as a steroid-sparing soothing layer.
Essentially every skin type benefits in some form. The one exception is people with documented allergies to plants in the Apiaceae family — carrot, celery, parsley — where cross-reactivity is possible. Rare but real.
How to use it
Morning or evening. Daily.
Most effective as a serum or built into your moisturizer. Spot treatments and ampoules also exist.
After cleansing, before stronger actives. Treat it as the soothing base layer.
Pairs with everything. Particularly synergistic with niacinamide (anti-inflammatory plus barrier support), ceramides (lipids plus soothing), hyaluronic acid (hydration plus soothing). During retinoid introduction, centella reduces the irritation that makes most people quit retinoids in week three.
Cica creams and the K-beauty pipeline
The “cica” trend — from cicatrisant, French for healing — brought centella into Western awareness through Korean brands like Dr. Jart+, Skin1004, and SOME BY MI. Western brands have since picked it up: Eucerin, Bioderma, CeraVe all include it now in mainstream formulations.
What to look for on the label: named centella actives (madecassoside, asiaticoside) rather than vague “centella extract,” stated concentrations where possible (most products don’t, but the premium ones do), and multi-active formulations that pair centella with ceramides or niacinamide.
What centella isn’t
Not a substitute for stronger anti-inflammatory treatment in serious conditions. Active rosacea, severe eczema, or moderate-to-severe acne usually need prescription care. Centella complements that. It doesn’t replace it.
Not a brightening ingredient, despite occasional marketing claims. The mild brightening from asiatic acid is real but small.
Not “natural Botox.” Not an anti-aging miracle. Modest collagen support exists — expect real but subtle effects, not dramatic ones.
Common mistakes
Buying products that list “centella extract” with no specific active named. Whole-plant extracts vary in potency. The specifics matter.
Using centella products for issues that need stronger treatment. Rosacea, eczema, and severe acne need medical care. Centella supports the routine. It isn’t the lead.
Stopping because nothing visible is happening. Centella’s job is often invisible — fewer flares, calmer baseline, faster recovery. Look at long-term skin behavior, not a single before-and-after.
FAQ
Cica and centella — same thing? Yes. Cica is marketing shorthand. Centella asiatica is the plant.
Pregnancy-safe topically? Generally yes, but confirm with your OB. Oral centella supplements are a different conversation — they’ve been used to influence connective tissue, which can be relevant during pregnancy.
Can I use it every day? Yes. Twice a day even. No tolerance issues.
Does it interact with retinol? Pairs well. Many people use centella to soften the irritation of the first weeks on a retinoid.
Is gotu kola the same plant? Yes. Same plant, different common name.
Sources
Bylka W et al. Centella asiatica in dermatology: An overview. Phytotherapy Research, 2014. Park BS et al. Madecassoside induces anti-inflammatory activity. Phytotherapy Research, 2008.