Ingredient review

Kanzou Ekisu

INCI: Glycyrrhiza Glabra (Licorice) Root Extract

Licorice root extract is a gentle, research-backed ingredient that helps calm redness and even out skin tone without harsh side effects.

beautyskincaresoothing agent

In plain English

Kanzou Ekisu is just the Japanese name for licorice root extract. In skincare, it's prized for its ability to soothe irritated skin and gradually fade dark spots. It works by calming inflammation and gently blocking an enzyme that triggers excess pigment production. Unlike some harsh brighteners, it's very gentle and suitable for sensitive skin types.

Review score

Safety, usefulness, and evidence

4.5Excellent
4.5/ 5

Strong fit for many routines

The evidence base is useful, but some claims depend heavily on the formula.

Risk flags are low for most users, though the finished product can still irritate.

Source
natural
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Easy yes for most routines

Kanzou Ekisu is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Kanzou Ekisu.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

A natural extract derived from the root of the licorice plant (Glycyrrhiza glabra), containing active compounds like glabridin and licochalcone.

How it works

It inhibits the enzyme tyrosinase, which is involved in melanin production, helping to reduce hyperpigmentation. Its anti-inflammatory compounds also calm redness and irritation.

Pros

Gentle brightening

Fades dark spots and uneven tone without the irritation common with stronger brightening ingredients.

Calms inflammation

Reduces redness and soothes conditions like rosacea or general sensitivity, making it ideal for reactive skin.

Cons and cautions

Slow results

Visible improvements in pigmentation take consistent use over several weeks to months, unlike faster-acting treatments.

Limited potency

For stubborn or deep hyperpigmentation, licorice extract may not be strong enough on its own and is best used in a combination routine.

Best for

  • People with sensitive or reactive skin looking for a gentle brightener
  • Those dealing with post-inflammatory hyperpigmentation from acne

Use caution if

  • Individuals with a known allergy to licorice or plants in the Fabaceae family

Usage tips

Use consistently twice daily for best results in fading dark spots.
Layer with sunscreen in the morning to protect skin and prevent further pigmentation.
Combine with niacinamide or vitamin C for enhanced brightening effects.

Safety summary

Licorice root extract is considered very safe for topical use with a low risk of irritation or allergic reaction. It is non-comedogenic and suitable for most skin types.

Research notes

Multiple studies support licorice extract's ability to inhibit tyrosinase and reduce UV-induced pigmentation. Its anti-inflammatory properties are also well-documented in both lab and human studies.

Common label clues

Typical concentration
0.5% to 2% in leave-on products
Regulatory status
Approved as a cosmetic ingredient globally; generally recognized as safe when used in typical concentrations.
Common uses
Serums, Moisturizers, Toner, Eye Creams
Environmental note
Licorice root is a renewable plant source, but overharvesting can be a concern; look for sustainably sourced extracts.

Good to know

  • Kanzou Ekisu is a common ingredient in J-Beauty and K-Beauty products.
  • The active compound glabridin is sensitive to light and air, so look for opaque, airtight packaging.

Common questions

What is Kanzou Ekisu in beauty products?

Kanzou Ekisu is just the Japanese name for licorice root extract. In skincare, it's prized for its ability to soothe irritated skin and gradually fade dark spots. It works by calming inflammation and gently blocking an enzyme that triggers excess pigment production. Unlike some harsh brighteners, it's very gentle and suitable for sensitive skin types.

What does Kanzou Ekisu do in a beauty product?

It inhibits the enzyme tyrosinase, which is involved in melanin production, helping to reduce hyperpigmentation. Its anti-inflammatory compounds also calm redness and irritation.

Is Kanzou Ekisu safe for most people?

Licorice root extract is considered very safe for topical use with a low risk of irritation or allergic reaction. It is non-comedogenic and suitable for most skin types.

Who should be careful with Kanzou Ekisu?

Individuals with a known allergy to licorice or plants in the Fabaceae family

Research sources

PubMed: Glabridin inhibits tyrosinase and melanogenesisOpenCosmetic Ingredient Review: Safety assessment of Glycyrrhiza GlabraOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.