Morus Nigra Leaf Extract
INCI: MORUS NIGRA LEAF EXTRACT
Reviewed by Kate · Last updated 14 Aug 2026
A plant extract studied for its potential to help regulate melanin production
Best For Skin Types
All
Addresses
Usage Frequency
Daily
What Is Morus Nigra Leaf Extract?
Morus nigra leaf extract is derived from the leaves of the black mulberry plant, native to Asia and now cultivated across temperate regions. The extract contains naturally occurring compounds including chlorogenic acid, rutin and isoquercitrin, which are polyphenols known for their antioxidant properties.
In skincare formulations, this ingredient functions as a skin conditioner. Its primary area of research interest centres on how it may interact with tyrosinase, an enzyme involved in melanin synthesis within skin cells.
How It Works
Melanin is produced by cells called melanocytes through a process involving the enzyme tyrosinase. When tyrosinase activity is overactive, it can result in hyperpigmentation and uneven skin tone. Research suggests that the compounds in Morus nigra leaf extract may inhibit tyrosinase activity, potentially reducing the amount of melanin produced.
The extract also contains antioxidants that may help protect skin cells from oxidative stress, which can contribute to premature ageing and inflammation.
Clinical Evidence & References
Laboratory studies indicate that extracts from Morus nigra leaves demonstrate tyrosinase inhibitory activity, suggesting potential benefit for hyperpigmentation concerns. Research has focused on standardised extracts rich in key polyphenols, and cytotoxicity testing has been conducted to assess safety.
However, most evidence to date comes from in vitro (test tube) studies rather than human clinical trials. More research involving human subjects would help clarify the practical effectiveness of this ingredient in skincare formulations and at what concentrations it delivers measurable benefits on skin.
How to Use
Morus nigra leaf extract is typically found in serums, toners and treatment products rather than as a standalone ingredient. For best results with products containing this extract, use consistently as part of your routine and allow at least 6–8 weeks to assess any changes in skin tone or hyperpigmentation. Combine with sun protection, as UV exposure stimulates melanin production.
Safety & Precautions
Frequently Asked Questions
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Morus Nigra Leaf Extract is a variant of Morus Nigra Root Extract, the form you will most often see on an ingredients list.
A plant extract that conditions and softens the skin barrier
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