OEM ODM Korean-style KT939 Jelly Facial Mask for Whitening, Brightening, Dark Spot Removal, Skincare, and Moisturizing Organic Skincare Product

OEM ODM Korean-style KT939 Jelly Facial Mask for Whitening, Brightening, Dark Spot Removal, Skincare, and Moisturizing Organic Skincare Product

Revolutionize Brightening Science: Korean KT-939 Jelly Mask with Shea Butter & Vitamin C

The global brightening skincare market is experiencing unprecedented growth, driven by consumer demand for clinically effective yet gentle solutions for hyperpigmentation, dark spots, and uneven skin tone. Our KT-939 Korean Jelly Mask represents a breakthrough in brightening face mask technology — combining the most potent tyrosinase inhibitor reported to date with deeply nourishing organic skincare ingredients. Developed for OEM and ODM skincare brands, this vegan, cruelty-free jelly mask delivers visible dark spot reduction, intense hydration, and a radiant complexion.

The Science of KT-939: A New Generation Brightening Agent

KT-939 is a next-generation human tyrosinase inhibitor that has received official INCI naming (Mono ID 39815) and is now available for global cosmetic formulation . Tyrosinase is the key rate-limiting enzyme in melanin synthesis — inhibiting its activity from the source is the most effective strategy for preventing and treating hyperpigmentation issues including freckles, melasma, age spots, and post-inflammatory hyperpigmentation.

Clinical research demonstrates that KT-939 inhibits human tyrosinase with an IC50 of 0.07 μM, making it approximately four times more potent than Thiamidol (the current gold standard in brightening ingredients), and over 300 times more potent than 377 (phenylethyl resorcinol). In melanin production inhibition tests, KT-939 achieved an IC50 of 0.36 μM, with inhibitory activity four times that of Thiamidol and far superior to arbutin, kojic acid, hydroquinone, 577, and other conventional brightening agents .

Beyond melanin inhibition, KT-939 exhibits:

• Antioxidant activity via NRF2 pathway activation, neutralizing free radicals that accelerate skin aging 

• Anti-inflammatory effects by dose-dependently downregulating pro-inflammatory cytokines IL-1α, IL-6, and TNF-α 

• Reversible action — melanin suppression normalizes within 1-2 weeks after discontinuation 

• Superior safety profile — suitable for normal and sensitive skin, with no observed cytotoxicity up to 50 μM 

A 28-day clinical study in healthy women with sensitive skin showed that 0.2% KT-939 lotion significantly improved skin spot lightening, tone uniformity, and overall brightness with good tolerabilitylete Skin Nourishment

1. Shea Butter (Butyrospermum Parkii)
A rich source of essential fatty acids and vitamins A, E, and F, shea butter for face applications provide deep moisturization while supporting skin barrier repair. It delivers anti-inflammatory benefits and helps soothe irritation, making this hydrating jelly mask suitable for even the most sensitive skin types.

2. Vitamin C (Stabilized Ascorbyl Glucoside)
This powerful antioxidant works synergistically with KT-939 to provide dual-action brightening — inhibiting melanin production while protecting against oxidative stress that triggers hyperpigmentation.

3. Herbal Blend (Green Tea, Chamomile, Calendula)
Our proprietary herbal extract face mask complex adds natural anti-inflammatory, antimicrobial, and soothing benefits, reducing redness and supporting skin health without synthetic additives.

4. Jelly Mask Format
The jelly mask for face format provides superior adherence and active ingredient delivery compared to traditional sheet masks. The unique gel texture creates an occlusive environment that drives actives deeper into the skin while providing a cooling, soothing sensation.

Why Choose This Formula for Your Brand

With the global brightening skincare market projected for continued expansion, consumers are actively seeking alternatives to harsh, irritating brightening agents. Traditional ingredients like hydroquinone carry safety concerns, while arbutin and kojic acid offer limited efficacy. KT-939 bridges this gap — delivering unprecedented potency with an excellent safety profile that suits sensitive skin.The ingredient has already completed comprehensive safety assessments including acute toxicity, skin irritation, sensitization, phototoxicity, and mutagenicity tests.

OEM / ODM Customization Services

We are a leading OEM jelly mask manufacturer and ODM private label mask provider with GMP and ISO 22716 certified production facilities:

• KT-939 Concentration Customization: Adjust the percentage (0.1%–0.5%) based on your target efficacy and price point

• Additional Active Boosters: Add niacinamide, tranexamic acid, or vegan collagen peptides

• Texture Options: Soft gel, firm jelly, or cream-gel hybrid

• Fragrance & Sensory: Custom herbal tea scents or fragrance-free options

• Herbal Signature Blend: Develop your proprietary botanical complex

• Packaging: Jelly mask pods, tubes, jars, or single-use sachets with sustainable options

• Certifications: Vegan, organic, cruelty-free — fully compliant with clean beauty standards

How to Use

Apply an even layer to clean, dry skin. Leave on for 15–20 minutes, then rinse with warm water or gently wipe off excess. For enhanced brightening results, use 2–3 times per week. Suitable for all skin types, including sensitive and hyperpigmentation-prone skin.

Partner with us to launch a custom K-beauty jelly mask featuring the next-generation brightening ingredient KT-939. Contact our OEM/ODM team today for samples, formulation prototyping, and white-label branding options.