How to get rid of hyperpigmentation and sun tan on body?

Hello, I am suffering from a really uneven skin tone. Generally, the back portion of my body ( both upper and lower back) is hyperpigmented in comparison to my front area. It also features a remarkable contrasting skin tone. I am also quite susceptible to tanning which has worsened the situation. Adding to the burden is my stretch marks which has earned some highlight owing to the hyperpigmentation. Is there any effective solution for this issue?

No doctor answers yet