Licorice Root Benefits for Improving Your Skin Tone

What Makes Licorice Root So Effective for Skin Tone?

Licorice root has been used in traditional medicine for thousands of years, but its reputation in skincare is well-earned and backed by real chemistry. The two compounds doing the heavy lifting are glabridin and liquiritin. Glabridin works by inhibiting tyrosinase, the enzyme responsible for melanin production — which is exactly why it's so useful for fading dark spots and evening out skin tone. Liquiritin helps disperse existing melanin deposits in the skin, physically breaking up the clusters that cause uneven pigmentation. These aren't vague "brightening agents." They have specific, documented mechanisms, which is why licorice root keeps showing up in serious skincare formulations.

Beyond those two stars, licorice root also contains flavonoids — plant-based antioxidants that help neutralize free radicals, support collagen synthesis, and calm irritated skin. It's also a source of minerals like iron, calcium, and potassium, though its topical skin benefits come primarily from those active botanical compounds.

What Does the Research Actually Say?

The clinical data on licorice root is more solid than you might expect for a botanical ingredient. One peer-reviewed study found that topical application of licorice root extract reduced hyperpigmentation by up to 50% after just eight weeks of daily use. That's a meaningful result — comparable to some over-the-counter brightening treatments that get far more marketing attention.

Other studies have looked at licorice root's ability to reduce age spots and protect against UV-induced skin damage. Liquiritin specifically has been shown to inhibit COX-2, an enzyme involved in the inflammatory response triggered by sun exposure. That means licorice root isn't just treating existing discoloration — it may help slow the process that creates new dark spots in the first place.

One important nuance: most of this research uses concentrated topical extracts, not raw licorice. Concentration and formulation matter. A well-made toner or serum with licorice root extract will deliver far better results than a diluted product where it appears far down the ingredient list.

How Licorice Root Helps with Inflammation and Acne Marks

One of licorice root's less-talked-about benefits is its anti-inflammatory action. Liquiritin's ability to suppress COX-2 means it can help calm the redness and irritation associated with conditions like rosacea, eczema, and post-acne inflammation. If you've dealt with acne, you know the pimple itself is often the shorter problem — the dark mark it leaves behind can stick around for months. Licorice root targets both the inflammation that makes breakouts worse and the post-inflammatory hyperpigmentation (PIH) that lingers after healing.

This dual action — calming active inflammation while also fading residual marks — makes it genuinely useful for acne-prone skin types, not just those dealing with sun-related discoloration.

Licorice Root and Oil Balance

One benefit that doesn't get enough attention: licorice root can help regulate sebum production. Excess oil is one of the main contributors to clogged pores and breakouts, and ingredients that address oil production without stripping the skin are worth paying attention to. Glabridin has shown some ability to modulate the activity of sebaceous glands, which means licorice root could support a more balanced complexion rather than just treating surface-level symptoms.

This makes it a smart ingredient for combination and oily skin types who want brightening benefits without added dryness or irritation. If you're looking for a toner that incorporates licorice root alongside other clarifying ingredients, the blissani Clear Face Toner is a vegan, cruelty-free option made in the US that fits this profile well — no harsh alcohols, no synthetic fragrance, just effective botanicals.

Is Licorice Root Safe for All Skin Types?

Generally, yes — licorice root is considered well-tolerated across most skin types, including sensitive skin. It doesn't carry the irritation risk of retinoids or the potential for rebound hyperpigmentation associated with hydroquinone. That said, as with any active ingredient, concentration matters. In very high doses, some compounds in licorice root have shown side effects in internal use — but topical applications at standard skincare concentrations are considered safe for everyday use.

If you have particularly reactive skin, patch testing is always a reasonable step before incorporating any new ingredient. But licorice root's anti-inflammatory profile actually makes it one of the gentler brightening options available, which is part of why it works well in formulations designed for acne-prone or easily irritated skin.

How to Get the Most Out of Licorice Root in Your Routine

Consistency is what moves the needle with licorice root. The 50% hyperpigmentation reduction cited in research came from eight weeks of daily use — this is not an overnight fix, and that's fine. Skin tone correction takes time regardless of the ingredient you're using. Applying a licorice root product once or twice a week won't get you there.

For best results, use it in the morning as part of your AM routine, since its antioxidant properties complement daily sun protection. Always pair it with SPF — licorice root can help prevent new dark spots from forming, but UV exposure will keep triggering melanin production and undo your progress. Think of sunscreen as locking in the work your brightening ingredients are doing.

Layering also matters. A toner with licorice root preps skin after cleansing and before heavier serums or moisturizers, which positions it well for absorption. If anti-aging is also a priority, combining a brightening toner with a targeted serum can address both discoloration and fine lines without overcomplicating your routine.

The short version: licorice root is one of the better-researched natural brightening ingredients available, with specific compounds — glabridin and liquiritin — that address hyperpigmentation at the source. Use it consistently, protect your skin from the sun, and give it at least six to eight weeks before evaluating results. That's when you'll actually see what it can do.