Ingredient review
Fermented Licorice Root Extract
INCI: Glycyrrhiza Glabra (Licorice) Root Extract / Ferment
A fermented licorice root extract that helps calm redness and even out skin tone with minimal irritation risk.
In plain English
This is licorice root that has been fermented, a process that may make its active compounds easier for your skin to use. It's known for helping to soothe irritated skin and gently fade dark spots over time, without the harshness of some brightening ingredients.
Quick decision guide
Useful, but context matters
Fermented Licorice Root Extract 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Fermented Licorice Root Extract.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- 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
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A natural extract from the root of the licorice plant (Glycyrrhiza glabra) that has undergone fermentation, a controlled breakdown by microorganisms. This process can increase the bioavailability of beneficial compounds like glabridin and licochalcone.
How it works
It works by inhibiting the enzyme tyrosinase, which is involved in melanin production, helping to reduce hyperpigmentation. Its anti-inflammatory compounds, such as licochalcone, help calm skin redness and irritation. Fermentation may enhance these effects by breaking down larger molecules into smaller, more absorbable ones.
Pros
Gentle brightening
Helps fade dark spots and uneven tone without the irritation common with stronger brighteners like hydroquinone or high-strength vitamin C.
Calms irritation
Contains anti-inflammatory compounds that can reduce redness and soothe sensitive or reactive skin, making it a good choice for post-procedure care.
Cons and cautions
Subtle results
Brightening effects are gradual and may take weeks of consistent use to become noticeable, especially compared to more potent synthetic alternatives.
Fermentation uncertainty
While fermentation is claimed to improve efficacy, there is limited independent research confirming that fermented licorice extract is significantly more effective than the standard extract.
Best for
- People with sensitive or reactive skin looking for gentle soothing
- Those wanting to even out skin tone or fade mild hyperpigmentation
Use caution if
- Individuals allergic to licorice or any legume (rare)
- Those seeking very fast or dramatic brightening results
Usage tips
Safety summary
Fermented 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, including sensitive skin. As with any ingredient, patch test before first use.
Research notes
Research on standard licorice root extract supports its anti-inflammatory and tyrosinase-inhibiting effects. Studies specifically on the fermented version are limited but suggest enhanced bioavailability. Overall evidence for its brightening and soothing benefits is moderate.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved as a cosmetic ingredient in most regions including the EU, US, and Japan. Not regulated as a drug.
- Common uses
- Serums, Toner, Moisturizers, Face Masks
- Environmental note
- Licorice root is typically sustainably harvested, but fermentation processes may require energy and water. Look for brands that source from certified organic farms when possible.
Good to know
- Fermentation can sometimes produce a slight odor, but this is normal and not a sign of spoilage.
- Licorice root extract is generally considered safe for use during pregnancy, but always consult your doctor.
Common questions
What is Fermented Licorice Root Extract in beauty products?
This is licorice root that has been fermented, a process that may make its active compounds easier for your skin to use. It's known for helping to soothe irritated skin and gently fade dark spots over time, without the harshness of some brightening ingredients.
What does Fermented Licorice Root Extract do in a beauty product?
It works by inhibiting the enzyme tyrosinase, which is involved in melanin production, helping to reduce hyperpigmentation. Its anti-inflammatory compounds, such as licochalcone, help calm skin redness and irritation. Fermentation may enhance these effects by breaking down larger molecules into smaller, more absorbable ones.
Is Fermented Licorice Root Extract safe for most people?
Fermented 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, including sensitive skin. As with any ingredient, patch test before first use.
Who should be careful with Fermented Licorice Root Extract?
Individuals allergic to licorice or any legume (rare) Those seeking very fast or dramatic brightening results
Research sources
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.