How long does it take for hyperpigmentation marks to disappear completely? what can i use to eliminate them much faster?

Weeks to months: Hyperpigmentation marks can take several weeks to months to disappear and vary depending on the cause for the pigment changes such as sun damage or post inflammatory changes whether from surgery or trauma for example. A good skin care regimen with moisturizers, gentle cleansers and exfoliants with the addition of quality sunblocks can expedite the process.