Centella asiatica, also known as iron lamp grass, money tooth grass, copper coin grass, horse hoof grass, and thunder root, is a perennial herbaceous plant belonging to the genus Centella of the Apiaceae family. Its stems are creeping, slender, and root at the nodes; leaves are membranous to herbaceous, round, kidney-shaped, or horseshoe-shaped; umbels bear 3-4 flowers with ovate petals, purplish-red or creamy-white; fruits are laterally flattened, with a hairy or smooth surface; flowering and fruiting period is from April to October.
Centella asiatica, also known as "thunder root" or "cramping bowl" in Chinese, and called "Gotu Kola" in Ayurvedic medicine, is a perennial herbaceous plant. It is hailed as a "natural beauty product" and a "nerve tonic," and has gained considerable attention in the skincare and health supplement industries in recent years.
I. Core Active Ingredients and Mechanism of Action
The efficacy of Centella asiatica extract is primarily attributed to the following classes of active compounds:
**Triterpenoid Saponins:** asiaticoside, asiaticoside, asiaticoside, and asiaticoside. These are its most important active ingredients, responsible for promoting wound healing, stimulating collagen synthesis, and anti-inflammation.
**Polyphenols:** Provide antioxidant, anti-inflammatory, and vascular-protective effects.
**Flavones:** Enhance antioxidant and anti-inflammatory effects.
II. Main Application Areas
1. Skincare and Cosmetics (Most Widely Used)
Centella Asiatica extract is a star ingredient in many "cosmeceutical" and repair-focused skincare products, often referred to as "CICA" (derived from its Latin name).
Barrier Repair and Healing:
Core Mechanism: Stimulates fibroblasts, promotes the synthesis of type I and type III collagen, and accelerates skin tissue regeneration.
Applications: Suitable for soothing sensitive skin, repairing redness, improving acne scars, scars (including surgical and acne scars), and stretch marks. It has excellent effects on skin repair after laser and microneedling procedures.
Anti-inflammatory and Soothing: Effectively inhibits inflammatory factors, reducing redness, stinging, and burning sensations.
Applications: Ideal for acne-prone skin, rosacea, eczema, dermatitis, and other inflammatory skin problems, helping to fade red acne marks.
Antioxidant and Anti-aging: Scavenges free radicals, protecting skin from photoaging and oxidative stress damage. By promoting collagen production, it improves skin elasticity and reduces fine lines.
Moisturizing: Enhances the hydration capacity of the stratum corneum, improves skin barrier function, and locks in moisture.
2. Pharmaceuticals and Health Products
Promotes Wound Healing: Traditionally used to treat trauma, burns, and ulcers (such as varicose ulcers and diabetic foot ulcers). Topical ointments can significantly accelerate the healing process.
Improves Venous Function and Microcirculation: Enhances the integrity of blood vessel walls and improves venous tone, used to treat chronic venous insufficiency (such as heaviness, pain, and edema in the lower extremities) and prevent postoperative thrombosis.
Neuroprotection and Cognitive Function: Used in traditional medicine to improve memory, relieve anxiety, and alleviate mild depression. Modern research suggests it may have neuroprotective effects and potential benefits for neurodegenerative diseases such as Alzheimer's disease, but more clinical evidence is needed.
Anti-fibrotic: Studies have found it can inhibit excessive collagen deposition, showing potential therapeutic value for diseases such as liver fibrosis and pulmonary fibrosis.
III. Common Product Forms
Skincare Products: Repairing creams/serums, scar removal creams, soothing masks, acne care products, sunscreens.
Topical Medications: Creams, gels, dressings for wound and scar care.
Health Supplements: Oral capsules, tablets, powders, or drops for improving circulation, cognition, or as systemic antioxidants.
Herbal Teas: Dried centella asiatica leaves can be brewed directly.
Centella asiatica extract is a versatile herb; its powerful repairing, anti-inflammatory, and antioxidant properties make it irreplaceable in modern skin care and trauma medicine.