Ingredient Guide
Glabridin
Glabridin is a licorice root-derived compound used for its skin-brightening and mild anti-inflammatory properties, working through a tyrosinase-inhibiting mechanism similar to arbutin.
Evidence profile
How confident is this recommendation?
Confidence is shown in plain categories, not a numerical trust score.
Some supporting research for both brightening and soothing effects; overall trial base is smaller than for more established brighteners.
Look for licorice root extract standardized for glabridin content where available.
These are the two areas where glabridin’s research has focused.
Like most brightening ingredients, effects are gradual rather than immediate.
Head-to-head comparative trials are limited.
What it is
A licorice-derived compound with dual brightening and soothing properties.
Glabridin is extracted from licorice root and is thought to inhibit tyrosinase, the enzyme central to melanin production, similar in mechanism to alpha arbutin, while also having some anti-inflammatory properties.
This combination makes it a reasonable option for those managing both tone concerns and mild sensitivity or redness, though the overall clinical evidence base is smaller than for more widely studied brighteners.
Evidence at a glance
Useful evidence, with important limits.
Hyperpigmentation and tone support
Some research supports glabridin’s tyrosinase-inhibiting activity relevant to hyperpigmentation.
Limit: The overall clinical trial base is smaller than for alpha arbutin or tranexamic acid.
Anti-inflammatory and soothing benefit
May offer some calming benefit for reactive or irritated skin.
Limit: Comparative evidence against dedicated soothing ingredients is limited.
Concentration guide
Look for standardized licorice extract where available.
| Concentration or form | How to interpret it | Practical use |
|---|---|---|
| Part of a standardized licorice root extract | Ensures a more consistent glabridin content than an unstandardized extract. | A reasonable way to evaluate product quality given limited isolated-glabridin standardization. |
Skin Candid view: Because isolated glabridin percentage isn’t consistently reported, favour products using standardized licorice extract for more predictable performance.
How to use it
Use consistently as part of a brightening or soothing routine.
Give it time: Like other brightening ingredients, glabridin’s effects build gradually rather than quickly.
Using it with other ingredients
Reduce routine complexity before testing combinations.
Alpha Arbutin
A complementary brightening ingredient working through a related mechanism.
Niacinamide
A commonly paired ingredient for combined tone and barrier support.
Sunscreen
Essential for preventing new pigment while using any brightening ingredient.
Side effects and caution
Generally well tolerated.
- Irritation is uncommon at typical cosmetic concentrations.
- Those with known licorice allergies should patch-test or avoid.
- Discontinue if unexpected irritation develops.
Frequently asked questions
Glabridin, without the pressure to tolerate everything.
Is glabridin the same as licorice root extract?
Glabridin is one of the primary active compounds within licorice root extract, though whole extracts contain other compounds as well.
Is glabridin as effective as alpha arbutin?
The evidence base for glabridin is smaller and less established than for alpha arbutin, though both work through related tyrosinase-inhibiting mechanisms.
Can glabridin help with redness as well as tone?
Some research suggests mild anti-inflammatory properties alongside its brightening role, though it is not a dedicated treatment for significant redness conditions.
Related decisions
Continue from the question you are actually trying to solve.
Sources reviewed
Primary evidence and medical guidance behind this page
Sources support the general editorial conclusions shown here. They do not prove that every product containing this ingredient will produce the same result.