Potassium Methoxysalicylate helps in slowing down melanin production by inhibiting tyrosinase enzyme activities.
It is clinically proven to reduce age spots and dark spots, balance skin tone, and lighten the skin. With its tremendous skin benefits, it is a popular ingredient for cosmetics and skin care products.
Baisifu is a professional supplier in China offering 4-MSK in 1kg, 5kg, 10kg, 25kg package or according to your request.
CAS Number: 152312-71-5
Appearance: White to off-white powder
Other Name: 4MSK/Potassium 2-hydroxy-4-methoxybenzoate
Features and benefits:
Inhibit melanin formation, promote melanin excretion, whiten skin;
Promote the metabolism of epidermis, strengthen skin barrier function, improve skin texture.
| CAS Number | 152312-71-5 |
| Appearance | White to off-white powder |
| Molecular Formula | C8H7KO4 |
| Molecular Weight | 206.24 |
| Purity | 99% |
| Melting Point | >220°C |
| Solubility | DMSO (Slight)
Methanol (Slight) Water (Slight) |
| Storage | Room Temperature |

You can use potassium methoxysalicylate to make a wide range of skin exfoliating agents, skin brightening agents, anti-wrinkle products, and anti-spot products.
These can range from lotions, creams, gels, moisturizers, scrubs, facial masks, toners, emulsions, and many sunscreen products. It is a versatile cosmetic ingredient that gives you the opportunity to explore a wide range of product formulations.
Potassium methoxysalicylate is a popular ingredient that offers many benefits in many cosmetic formulations. Among the key benefits it offers are:

As a cosmetic manufacturer, it is important to understand how an ingredient will affect the performance of your products. This way, it becomes easier to explain the products to your customers.
Ideally, the working mechanism of potassium methoxysalicylate depends on two critical aspects: inhibiting tyrosinase and promoting keratinocyte. Through these two mechanisms, the 4-MSK focuses on dealing with skin pigmentation.
By inhibiting tyrosinase, 4-MSK prevents the skin from melanin synthesis. Slowing the process prevents skin from overproducing melanin,whichcontributes to the pigmentation.
At the same time, potassium methoxysalicylate promotes keratinocyte metabolism. By doing so, it speeds up the rate of cell turnover. As a result, the skin gets rid of “old” cells that are already affected by melanin.
Therefore, all these contribute to a healthy and brighter skin at all times.
The concentration of 4-MSK varies depending on the product you want to formulate. As your potassium methoxysalicylate supplier in China, Baisifu team can also help you in the process.
In most cases, the concentration may vary from 1% to 3%. But having said that, let’s explore other critical aspects of the 4-MSK formulation process:

Potassium methoxysalicylate works well with other skin brightening ingredients such as vitamin C,alpha arbutin,tranexamic acid, and kojic acid. Remember, these are also skin brightening agents.
When it comes to skin exfoliation, you can mix 4-MSK with glycolic acid (AHA) and salicylic acid (BHA).
Additionally, you can formulate it with skin-soothing cosmetic ingredients like aloe vera and hydrating agents like hyaluronic acid.
During the formulation process, it is critical that you conduct tests at every stage to ensure your cosmetic products are safe.
By modifying a derivative of salicylic acid with a methoxy group, Baisifu produces potassium methoxysalicylate that is safe for cosmetic formulation. It is not only stable, but also water-soluble, making it perfect for water-based cosmetic formulation.
Potassium methoxysalicylate is considered safe for use in cosmetic formulations. So far, no country has banned or prohibited the use of 4-MSK in any product.
Baisifu is an ISO 22716 potassium methoxysalicylate producer and supplier in China, popular for its high-purity cosmetic ingredients. Our 4-MSK is carefully processed and formulated to ensure maximum efficacy and safety.
With every potassium methoxysalicylate, you get a complete product datasheet alongside a certificate of analysis. At the same time, Baisifu team is always ready to help you with product formulation upon request.
Partner with Baisifu today for flexible MOQs and competitive prices on potassium methoxysalicylate powder – Get free samples now.
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Cosmetic IngredientsInterested in this product? Send us a message for pricing and samples.
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danny@baisfu.com
kenny@baisfu.com
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