Potassium Methoxysalicylate is a whitening compound that can inhibit the production of melanin and prevent the appearance of spots and freckles caused by sun exposure. 4MSK not only has the function of suppressing melanin generation but can also regulate the state of the rough keratinization process. Shiseido emphasized that 4MSK could restore the quantity of factors in damaged areas and allow all levels of factors in the melanin excretion process to act as a guiding light for melanin excretion, ensuring that melanin does not get "lost".
China Extract Warehouse, as a producer of Potassium Methoxysalicylate powder, has been committed to providing the highest - quality Potassium Methoxysalicylate at the most competitive prices to markets around the world. For long - term cooperation, free samples are available.
Basic information
| Product Name | Potassium Methoxysalicylate | Other Name | Potassium 2-hydroxy-4-methoxybenzoate;Potassium 4-methoxysalicylate;4-MSAK; 4MSK |
| Specification | 99% | Appearance | White Crystalline Powder |
| Molecular Formula | C8H7KO4 | Molecular Weight | 206.24 |
| CAS NO. | 152312-71-5 | Sample | Free Offer |
| Supplier | Extract WareHouse | Grade | Pharmaceutical and Cosmetic |
| Structural Formula | potassium methoxysalicylate structural formula | ||
Benefits of Potassium Methoxysalicylate
- It can correct epidermal dysplasia, abnormal keratinization, and atrophy. It has a remarkable effect on perfecting the keratinization process, facilitating the smooth discharge of melanin. Meanwhile, it promotes the increase of hyaluronic protein particles and the thickening of the granular layer. It thins the stratum corneum, speeds up the stratification of keratinocytes, and makes the skin smoother and whiter.
- Potassium methoxysalicylate powder not only has the same effect of inhibiting melanin production as existing whitening active ingredients but also can adjust the differentiation of keratinocytes. It can improve the skin condition where melanin tends to deposit excessively. Human effectiveness tests have confirmed that it also has an excellent defensive effect against artificially induced pigmentation. Based on the results of these studies, potassium methoxysalicylate was developed as a quasi - drug product and obtained a license in Japan. Similar legal systems in Korea (functional cosmetics), China (special - purpose cosmetics), and Taiwan (including Medicinal cosmetics) have also licensed it as an active ingredient, and it is popular in the global whitening cosmetics market.
Test report
| Trade Name: MSK | INCI Name: Potassium Methoxysalicylate | |
| Batch No.: EW220315 | Quantity: 200kg | |
| Manufacturing Date: 15.09.2025 | Best Use Before Date: 15.09.2027 | |
| Items | Specification | Results |
| Appearance: | White-Like Crystalline Power | Pass |
| Assay %: | 98.0 min | 98.6 |
| Loss on drying %: | 0.5 max | 0.24 |
| Heavy metals (ppm): | 10.0 max | 5.50 |
| Arsenic (ppm): | 2.0 max | 1.50 |
| Conclusion: | Pass | |


potassium methoxysalicylate structural formula






