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Potassium Methoxysalicylate (4MSK) is a widely available, high-purity ($\geq$98-99%) white powder used for skin whitening, anti-spot, and exfoliating formulations, featuring high water solubility and a recommended 0.1-3.0% usage level. Spot goods are readily available from manufacturers like ZLEY, InnoAestheticLabs (DropBrigt®), and specialized suppliers.
Key Information & Suppliers:
- Formulation Use: Suitable for aqueous phases of lotions, gels, and creams; stable when formulated between pH 4.0–5.5 and below .
- Properties: Functions as a tyrosinase inhibitor to decrease melanin, often used as a substitute for or in combination with traditional whitening agents.
- Availability: Suppliers offer prompt, often bulk, spot goods, including REB Technology.
- Spot Goods Suppliers:
- ZLEY®: Specializes in Potassium Methoxysalicylate for anti-spot applications.
- The Formulator Shop: Offers 4MSK in powder form.
- Drop-bio: Provides spot goods for immediate purchase.
Commonly found in high-end brightening, the ingredient is also referred to as 4MSK or Potassium 2-hydroxy-4-methoxybenzoate.
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Web results
Potassium Methoxysalicylate spot goods
Drop(Nanjing)Bio-Tech Co.,Ltd.
https://www.drop-bio.com › potassium-methoxysalicylat...
Drop(Nanjing)Bio-Tech Co.,Ltd.
https://www.drop-bio.com › potassium-methoxysalicylat...
DropBrigt® 4MSK（Potassium Methoxysalicylate ）is a salicylic acid derivative and belongs to one of the safe whitening and light spot materials.Products are in ...
Products That Contain POTASSIUM METHOXYSALICYLATE
Environmental Working Group
https://www.ewg.org › skindeep › browse › ingredients
Environmental Working Group
https://www.ewg.org › skindeep › browse › ingredients
Shiseido White Lucent MicroTargeting Spot Corrector (2018 formulation). Shiseido. White Lucent MicroTargeting Spot Corrector (2018 formulation). HIGH HAZARD.Read more
Potassium Methoxysalicylate 4MSK
The Formulator Shop
https://theformulatorshop.com › product › potassium-m...
The Formulator Shop
https://theformulatorshop.com › product › potassium-m...
It is used to inhibit melanin synthesis and prevent the formation of dark spots and freckles caused by sun exposure. · It helps correct epidermal dysplasia and ...Read more
NGN 24,500.007-day returns
People also ask
What is potassium Methoxysalicylate in skincare?
Potassium 4‐methoxysalicylate (4MSK) is a skin lightening agent that was approved as an active skin lightening ingredient of quasi‐drugs by the Ministry of Health, Labour and Welfare of Japan in 2003. For over 20 years, 4MSK has been widely used in quasi‐drug and cosmetic products.Mar 12, 2025
Potassium 4‐Methoxysalicylate (4MSK) Exerts a Skin Lightening ...
PMC - NIH
https://pmc.ncbi.nlm.nih.gov › articles › PMC11898116
PMC - NIH
https://pmc.ncbi.nlm.nih.gov › articles › PMC11898116
Is potassium good for hyperpigmentation?
Leafy green vegetables are chock-full of vitamins A, B-6, C, and K, manganese, calcium, copper, potassium and magnesium. All of these nutrients combine to improve the alkalinity and balance of minerals in your skin, reducing the appearance of hyperpigmentation.Apr 15, 2025
Best Diet (Foods) For Pigmentation on Face - LYMA life
LYMA life
https://lyma.life › what-to-eat-to-reduce-skin-pigmentation
LYMA life
https://lyma.life › what-to-eat-to-reduce-skin-pigmentation
Web results
DropBrigt® 4MSK | Potassium Methoxysalicylate
Innoaesthetic Labs
https://www.innoaestheticlabs.com › products
Innoaesthetic Labs
https://www.innoaestheticlabs.com › products
DropBright® 4MSK is a whitening agent specifically developed for reducing hyperpigmentation and improving uneven skin tone.
$380.004-day delivery
Potassium Methoxysalicylate by COSROMA
UL Prospector
https://www.ulprospector.com › PersonalCare › Detail
UL Prospector
https://www.ulprospector.com › PersonalCare › Detail
Cosroma® 4MSK is pure Potassium Methoxysalicylate. Potassium Methoxysalicylate can correct epidermal atypical hyperplasia, poor keratinization, and atrophy, and ...Read more
Potassium Methoxysalicylate (with Product List)
INCIDecoder
https://incidecoder.com › ingredients › potassium-meth...
INCIDecoder
https://incidecoder.com › ingredients › potassium-meth...
Read what Potassium Methoxysalicylate is doing in your skincare and cosmetic formulas and browse products you can find it in.
ZLEY®Potassium methoxysalicylate
zleygroup.com
https://www.zleygroup.com › product › BRIGHTENING
zleygroup.com
https://www.zleygroup.com › product › BRIGHTENING
Lightens and balances skin tone, and reduces dark spots and age spots. Inhibits the activity of the enzyme tyrosinase, which is essential for melanin production ...Read more
Best Skincare Products with Potassium Methoxysalicylate
SkinSort
https://skinsort.com › products › products-with-potassiu...
SkinSort
https://skinsort.com › products › products-with-potassiu...
Best Skincare Products with Potassium Methoxysalicylate · Top products · Shiseido. Eudermine Activating Essence · Shiseido. Vital Perfection ...Read more
30-day returns
Potassium Methoxysalicylate(4MSK)
REB TECHNOLOGY
https://hzrebtech.com › product › 4-potassium-2-hydro...
REB TECHNOLOGY
https://hzrebtech.com › product › 4-potassium-2-hydro...
Exfoliating agent, whitening agent, anti-spot agent. Used in whitening products, anti-spot products, anti-wrinkle products, anti-acne products. Suitable for ...Read more
Potassium Methoxysalicylate(4MSK) Powder
Sophix Natural
https://sophixnatural.com › Ingredients › Cosmeceuticals
Sophix Natural
https://sophixnatural.com › Ingredients › Cosmeceuticals
Cosmetic Benefits of Potassium Methoxysalicylate Powder: Skin lightening & balance skin tone,; Reduced dark spot & age spot; Penetrate the epidermis easily ...Read more
$11.07 to $421.98