Centella Titrated Extract

Overview

Centella asiatica — also called gotu kola, tiger grass, or pennywort — is a small creeping plant native to South and Southeast Asia. It has been used in Ayurvedic and traditional Chinese medicine for centuries, primarily for wound healing, varicose veins, and skin scars.

The DIY ingredient encyclopedia already covers the basic centella extract. This entry covers the titrated form — the standardized therapeutic-grade extract sold for serious cosmetic work.

The titrated extract is standardized for the active triterpene content: asiaticoside, madecassoside, asiatic acid, and madecassic acid. Suppliers usually report the percentages on the spec sheet (typical ranges: 30-40% asiaticoside, 30-50% madecassoside, 10-15% asiatic acid, 10-15% madecassic acid). The “TECA” (Titrated Extract of Centella Asiatica) abbreviation refers to this standardized form.

This is the form that delivers the documented wound-healing, scar-fading, and barrier-repair benefits at predictable percentages. Generic centella extract works too, but the titrated form gives the most reliable result per percent.

It comes as a fine pale-yellow to amber powder.

Shelf life is 2-3 years sealed.

What it does in a formula

The titrated triterpenes contribute:

• Scar healing — stimulates fibroblasts and collagen synthesis at the wound site
• Stretch-mark reduction — over 8-12 weeks of consistent use
• Barrier repair — boosts ceramide synthesis and tight junction proteins
• Anti-inflammatory — well-documented activity on multiple pathways
• Wound-healing acceleration — faster re-epithelialization on minor wounds
• Microcirculation support — relevant for varicose vein products
• Anti-aging — collagen-stimulating effect translates to anti-wrinkle benefits

This is one of the most well-evidenced botanical actives in modern cosmetics — the Korean skincare category around “Cica” (short for centella) has built on a solid clinical foundation.

How to use

Pre-dissolve the powder in a small amount of propanediol, propylene glycol, or water with heat (the triterpenes are sparingly soluble in cold water). Add to the cool water phase or cool-down.

Usage rates by product type (standardized TECA powder):

• Scar and stretch-mark creams: 0.5-2%
• Anti-aging serums: 0.5-1%
• Barrier-repair face creams: 0.5-1%
• Post-procedure / post-acid recovery: 0.5-1%
• Sensitive skin / Cica creams: 0.3-1%
• Tattoo aftercare: 0.5-2%
• Eye creams: 0.3-0.8%

For generic (non-titrated) centella extract, percentages are typically 5-10x higher.

Best for / Worst for

Best for: scar and stretch-mark products, post-procedure (peels, lasers) skincare, tattoo aftercare, sensitive skin Cica creams, barrier-repair products, mature skin formulas, post-acne mark fading, eczema-prone support, varicose vein products.

Worst for: customers wanting fast visible brightening (centella is slow), formulas marketed for children under 1 (caution), customers with confirmed centella allergy (rare).

Common pitfalls

Confusing with generic centella. The titrated form is 5-10x more concentrated. Adjust percentages.

Not dissolving. Triterpenes are sparingly water-soluble. Pre-dissolve in propanediol with heat.

Wrong species. Centella asiatica is the cosmetic species. Hydrocotyle vulgaris (the European pennywort) has different chemistry. Read the INCI.

Slow results. Visible scar fading takes 8-12 weeks. Set customer expectations.

Overpromising “instant glow.” Centella is a slow, supporting active. Pair with hero brightening or hydrating actives for short-term wow.

Sourcing variability. TECA from different suppliers can vary in triterpene ratios. Check the spec sheet.

Substitutes

• Generic centella extract — same plant, much less concentrated.
• Madecassoside (isolated) — single-molecule active for the most refined formulas.
• Asiaticoside (isolated) — another isolated active.
• Allantoin — different mechanism, similar wound-healing role.
• Bisabolol — anti-inflammatory alternative.
• Beta-glucan — barrier-repair alternative.