Ingredient · INCI listed
4msk
4-methoxysalicylic acid — a brightening active developed by Shiseido that interrupts excess pigment production to fade spots and even tone.
Data summary
Products containing
3
Most common in
2 products
serums
Typical pairing
Licorice Root Extract
Verified reviewer
In the catalog
4msk by the numbers.
We've catalogued 3 products that use 4msk, and it's strongly concentrated in serums — 2 products, 67% of where it shows up. Formulations carrying it score 70/100 on average (above the catalog norm); the strongest is Shiseido White Lucent Illuminating Micro-Spot Serum at 72/100.
It co-occurs most with Licorice Root Extract (2 shared formulas) and Vitamin C (2 shared formulas).
Where it shows up
