Mulberry Liquid Extract

✦ Naturally inhibits tyrosinase enzyme activity to reduce melanin overproduction and visibly brighten skin
✦ Rich in flavonoids and polyphenols that neutralize free radicals and protect against oxidative stress
✦ Helps fade dark spots, age spots, and post-inflammatory hyperpigmentation over consistent use
✦ Water-soluble liquid format that easily incorporates into serums, toners, essences, and cream water phases
✦ Gentle enough for sensitive and reactive skin types when used at recommended concentrations
✦ Plant-derived and suitable for vegan, cruelty-free, and clean beauty formulations
✦ Complements other brightening actives like niacinamide, vitamin C, and alpha arbutin for enhanced results

Mulberry Liquid Extract is derived from the root bark of Morus alba, a tree native to East Asia with centuries of use in traditional herbal medicine and skincare. In cosmetic applications, mulberry gained prominence as researchers identified its potent tyrosinase-inhibiting compounds, making it one of the most effective plant-based alternatives to hydroquinone for addressing hyperpigmentation and uneven skin tone.

What makes mulberry extract particularly valuable is its multi-pathway approach to skin brightening. It contains naturally occurring compounds such as mulberroside F, oxyresveratrol, and kuwanon derivatives that not only suppress melanin synthesis at the enzymatic level but also offer significant antioxidant and anti-inflammatory benefits. This dual action means it brightens while simultaneously protecting and calming the skin, reducing the irritation risks commonly associated with aggressive depigmenting agents.

Rabibazaar supplies cosmetic-grade Mulberry Liquid Extract suitable for DIY skincare formulators, beauty entrepreneurs, estheticians, and professional cosmetic chemists.

INCI Name : Morus Alba Root Extract (and) Water (and) Glycerin
Chemical Name : Morus Alba Root Bark Extract
CAS Number : 84082-34-8
Molecular Formula : Not Applicable (complex botanical mixture)
Appearance : Light amber to brown transparent liquid
Odor : Mild, slightly herbaceous
pH (1% solution) : 4.5 – 6.5
Solubility : Water-soluble
Specific Gravity : 1.00 – 1.10
Flash Point : Not Applicable (aqueous extract)
HLB Value : Not Applicable
Recommended Use Level : 1% – 5%
Type : Plant-derived active / Botanical liquid extract
Shelf Life : 12 – 18 months (unopened, stored properly)

Skincare (Serums, Toners, Essences)
★★★★★
Mulberry extract excels in targeted brightening serums and daily toners due to its water-soluble nature and tyrosinase-inhibiting activity. Use at 2% to 5% in the water phase for visible tone-evening results within 4 to 6 weeks.

Skincare (Creams and Lotions)
★★★★☆
Performs well in emulsion-based moisturizers and night creams where sustained skin contact allows deeper absorption. Add to the water phase at 1% to 3% and pair with a broad-spectrum sunscreen for daytime formulations.

Face Masks and Treatments
★★★★★
Ideal for wash-off brightening masks and weekly intensive treatments where higher concentrations deliver visible results in fewer applications. Use at 3% to 5% in gel or cream mask bases for a professional-grade brightening treatment.

Body Care (Lotions and Body Serums)
★★★☆☆
Suitable for body areas prone to darkening such as elbows, knees, and underarms but requires larger quantities for body-scale formulations. Use at 1% to 2% in lightweight body lotions for gradual evening of skin tone.

Functional Cosmetics (Anti-Aging and Sun Care)
★★★★☆
Complements anti-aging and post-sun formulations due to its antioxidant properties and ability to address sun-induced pigmentation. Combine with vitamin E and niacinamide at 2% to 3% for a multifunctional corrective product.

In my formulating experience, mulberry liquid extract delivers its best results when layered with complementary brightening pathways rather than used alone at maximum concentration. I typically build a three-pronged brightening system using mulberry at 3% for tyrosinase inhibition, niacinamide at 4% to 5% for melanosome transfer disruption, and alpha arbutin at 1% to 2% for additional enzymatic control. This combination outperforms any single agent used at higher percentages and minimizes the risk of irritation.

ADVANCED TIP: When formulating a brightening serum, add mulberry liquid extract at 3% to 4% into the cooled water phase below 40°C to preserve its bioactive polyphenols. Combine with 0.5% licorice root extract and 2% tranexamic acid for a professional-grade multi-target pigmentation corrector that addresses melanin at synthesis, transfer, and oxidation stages simultaneously.

Normal Skin : ★★★★★ — Excellent daily brightening active with no irritation concerns at standard levels.
Dry Skin : ★★★★☆ — Glycerin-based carrier adds mild hydration; pair with richer emollients for full moisturization.
Oily Skin : ★★★★★ — Lightweight water-soluble format absorbs cleanly without adding oiliness or congestion.
Combination : ★★★★★ — Works evenly across both oily and dry zones without destabilizing skin balance.
Sensitive Skin : ★★★★☆ — Generally well-tolerated; start at 1% and increase gradually to confirm no reactivity.
Mature Skin : ★★★★★ — Addresses age spots and oxidative damage while supporting overall radiance in aging skin.
Acne-Prone : ★★★★☆ — Non-comedogenic and anti-inflammatory; helps fade post-acne marks without aggravating breakouts.

CONCEPT 1: Luminous Glow Brightening Serum
Usage Level : 4%
Key Ingredients: Niacinamide, Hyaluronic Acid, Alpha Arbutin, Panthenol
Result : A lightweight water-based serum that targets dark spots and uneven tone while delivering deep hydration for a visibly radiant complexion.

CONCEPT 2: Even Tone Overnight Correction Cream
Usage Level : 3%
Key Ingredients: Shea Butter, Licorice Root Extract, Vitamin E, Cetearyl Alcohol
Result : A rich night cream that works during sleep to reduce hyperpigmentation and nourish the skin barrier for a smoother, more even morning complexion.

CONCEPT 3: Clear Radiance Gel Mask
Usage Level : 5%
Key Ingredients: Aloe Vera Gel, Tranexamic Acid, Allantoin, Carbomer
Result : A weekly treatment gel mask that delivers concentrated brightening action while calming inflammation and leaving skin refreshed and luminous after each use.

INCI Declared : Yes — required when present in formula at any functional level
EU Cosmetics Reg : Permitted — no specific restriction under EU Regulation 1223/2009
Rinse-Off Limit : No established maximum; typically used at 1% – 5%
Leave-On Limit : No established maximum; typically used at 1% – 5%
Allergen Alert : No — no listed allergens; rare sensitivity possible in individuals allergic to Moraceae family plants
Skin Safety : Safe at recommended levels
Eye Area Use : Use with caution — avoid direct contact; suitable in eye-area products at lower concentrations (1% – 2%)
Ingestion : Not for internal use
Pregnancy Use : Consult physician — no established contraindication but professional guidance recommended
Child Safety : Safe above 3 years of age at reduced concentrations (0.5% – 1%)
Ventilation : Not required
Storage : Cool dry place away from direct sunlight; refrigeration recommended after opening
Container : HDPE or PET plastic; dark or amber glass preferred to protect from light degradation

⚠️ Botanical extracts may vary in potency between batches. Always conduct a patch test before full application, especially on sensitive or reactive skin. Store away from heat and light to preserve active compound integrity.

Working pH Range : 4.0 – 7.0 (optimal brightening activity at pH 5.0 – 6.0)
Heat Stability : Add below 40°C — polyphenols degrade at higher temperatures
Freeze-Thaw Stable : No — may cause separation or loss of active potency after repeated freeze-thaw cycles
Emulsion Type : O/W preferred (water-soluble, integrates into water phase)
Emulsification Phase: Cold phase addition after emulsification is complete
Compatible With : Niacinamide, hyaluronic acid, alpha arbutin, glycerin, allantoin
Incompatible With : Strong oxidizing agents, high concentrations of vitamin C (ascorbic acid above 10%), strongly alkaline systems above pH 8
Oxidation Risk : Medium — polyphenol content is susceptible to oxidation; add 0.05% to 0.1% sodium metabisulfite or vitamin E as antioxidant
Discoloration Risk : Possible — extract may darken over time or cause slight amber tinting in very light-colored formulations
Formulation Notes : Add to the cooled water phase as a final-stage ingredient. Use opaque or amber packaging to minimize photodegradation of active compounds.

Q: What does Mulberry Liquid Extract do in skincare formulations?
A: It naturally inhibits the tyrosinase enzyme responsible for melanin production, helping to reduce dark spots and even out skin tone over time. It also provides antioxidant protection against environmental damage.

Q: At what percentage should I use Mulberry Liquid Extract in my products?
A: The recommended usage level is 1% to 5% depending on the product type. For daily-use serums and toners, 2% to 4% is effective, while intensive masks can go up to 5%.

Q: Can I combine Mulberry Extract with Vitamin C in the same formula?
A: You can combine them, but keep ascorbic acid below 10% as higher concentrations in combination may cause oxidation and reduce the stability of mulberry polyphenols. Using a vitamin C derivative like sodium ascorbyl phosphate is a more stable pairing.

Q: Does Mulberry Extract cause any skin irritation or sensitization?
A: It is generally very well-tolerated and considered gentler than many synthetic brightening agents. However, individuals with allergies to Moraceae family plants should patch test first, and beginners should start at 1% concentration.

Q: How does Mulberry Extract compare to Alpha Arbutin for skin brightening?
A: Both inhibit tyrosinase but through slightly different mechanisms, making them excellent partners rather than direct replacements. Alpha arbutin is a single purified compound with more clinical data at specific concentrations, while mulberry extract offers a broader spectrum of antioxidant and anti-inflammatory benefits alongside its brightening action.

Product evaluation

Review the specifications, supplied grade, intended use and compatibility of Mulberry Liquid Extract before ordering for production. Test a small quantity in the actual application and document the result before scaling.

Quality control

Inspect the received batch for expected appearance, odor, texture, packaging condition and labeling. Keep supplier and batch records, use accurate measurements, and retain a reference sample when the material is used commercially.

Storage and responsible use

Store tightly closed in a clean, cool and dry location away from direct sunlight. Follow the current supplier instructions and all safety, labeling and regulatory requirements that apply to the intended finished product.