Key benefit
Inhibits tyrosinase via mulberroside F & related compounds
Typical use level
3–5% standardized extract in finished products
Best for
Melasma, PIH & general dullness, incl. deeper skin tones
Mulberry extract — usually derived from the leaves or root bark of Morus alba (white mulberry), the same plant long used in Ayurvedic and traditional Chinese medicine — is one of the better-studied botanical tyrosinase inhibitors, though it still sits a step behind ingredients like niacinamide or tranexamic acid in the size of its human evidence base.
What mulberry extract does for skin
- Inhibits tyrosinase at the dopa-to-dopachrome step — largely credited to a compound called mulberroside F, isolated from white mulberry leaf extract, which also suppressed melanin formation in cultured melanocytes
- Reduces melanin transfer, not just melanin production — research on mulberry extract found it lowered the transfer of pigment from melanocytes to surrounding skin cells and reduced the branching (filopodia) melanocytes use to pass pigment along, a slightly different mechanism than straightforward tyrosinase-blocking actives
- Showed measurable improvement in a small human melasma trial — discussed in detail below, this is one of the few botanical brighteners with an actual placebo-controlled human study behind it, rather than cell-culture or animal data alone
An honest note on the evidence
You’ll often see mulberry extract described as inhibiting tyrosinase “more potently than kojic acid” — this traces back to a 2002 lab (in-vitro) study on white mulberry leaf extract, not a head-to-head skin comparison. A separate, frequently-cited figure — a 0.4% extract matching the tyrosinase-suppressing effect of 5.5% hydroquinone and 10% kojic acid — actually comes from paper mulberry (Broussonetia papyrifera), a different plant that shares the common name “mulberry” but isn’t Morus alba. It’s easy to see these figures conflated in marketing copy. The human evidence specific to Morus alba is real but comes from one small trial, so it’s reasonable to treat this as a genuinely promising botanical rather than a settled hydroquinone-level alternative.
What percentage of mulberry extract should you use
Most off-the-shelf cosmetic formulations use a standardized Morus alba extract at around 3–5%, added to the water phase. That’s different from the preparation used in the one published human melasma trial, a 75% mulberry extract oil — a far more concentrated, oil-based formulation that isn’t the same as the diluted extracts typically found in commercial serums and creams, so results from that trial don’t automatically transfer to a 3–5% product.
| Concentration | Where it’s found | What to expect |
|---|---|---|
| 3–5% | Standardized Morus alba extract in typical commercial serums, creams and essences | The common off-the-shelf range; often combined with other brighteners rather than used alone |
| 75% (extract oil) | The concentration used in the one published placebo-controlled melasma trial | Measurable MASI score improvement by week 8 — but this was a specific oil-based preparation, not a typical finished product |
What the melasma trial actually found
A randomized, single-blind, placebo-controlled trial (Alvin et al., 2011) tested a 75% Morus alba extract oil on 50 patients with melasma (skin types III–V, so relevant to deeper, Indian-adjacent skin tones) over 8 weeks. The mulberry group’s MASI (Melasma Area and Severity Index) score fell from 4.08 to 2.88, a meaningfully larger drop than the placebo group saw, and Mexameter readings — an objective pigmentation measurement — also moved in the direction of lighter skin. Quality-of-life scores (MelasQOL) improved more in the mulberry group too. Tolerability was good: only 4 of 25 mulberry-treated patients reported mild itching, compared with 12 cases of itching or redness in the placebo group, likely related to the oil base itself rather than the extract.
Who should use mulberry extract
Worth considering if you want a botanical option to layer into a melasma or post-inflammatory hyperpigmentation (PIH) routine, especially alongside more established actives, or if you simply prefer plant-derived ingredients where one exists with real (if limited) clinical backing. It’s reasonable for most skin types, including sensitive skin, though as with most newer actives, there isn’t robust safety data specific to pregnancy, so checking with a doctor first is the sensible default if that applies to you.
What to pair mulberry extract with
As with every pigmentation-focused ingredient on this site, daily broad-spectrum sunscreen protects any progress mulberry extract helps you make — without it, ongoing UV exposure will keep driving new pigment formation.
Frequently asked questions
Is mulberry extract the same as kojic acid?
No — kojic acid is a single compound originally derived from fungi, while mulberry extract is a plant extract containing several active compounds, mulberroside F among them. They work through related but distinct mechanisms and are sometimes combined in formulations.
Does mulberry extract really work better than kojic acid or hydroquinone?
The strongest potency claims come from lab (in-vitro) studies, and one widely repeated figure is actually about a different plant (paper mulberry, not Morus alba). The one small human melasma trial on Morus alba showed genuine improvement versus placebo, but it hasn’t been tested head-to-head against hydroquinone in people.
Can mulberry extract be used with other brightening actives?
Yes — it’s generally well tolerated and is commonly formulated alongside niacinamide, vitamin C, alpha arbutin, licorice extract or kojic acid in combination products.
Is mulberry extract safe during pregnancy?
There isn’t dedicated human safety data for topical mulberry extract in pregnancy, so it’s sensible to check with a doctor first if that applies to you — the same precaution that applies to several other pigmentation actives on this site.