Hello, You can reduce the appearance of stretch marks with microdermabrasion and laser or light therapy. Over time, laser treatment also helps to increase the production of collagen. The cost of the treatment will be told at the clinic as multiple sessions will be required according to the severity of your issue. For hyperpigmentation also, laser and microdermabrasion are quite helpful. We would suggest you visit the clinic so that the dermatologist can recommend the right line of treatment. We are also linking this page in the hope that it will help - Skin Care doctors in Mumbai. Do let us know if you need information on anything else, or even if your desired region is different!