Compared to before my face skin has turned black. also face skin texture is not uniform, some places its black and some places its white. and people say for my age my face skin looks rough. also there is no glow at all in my face skin & it feels very dry and face skin looks its almost dead.

It sounds like your skin is experiencing uneven pigmentation and dryness, which could be due to a variety of factors such as dehydration, hormonal changes, or skin irritation. I recommend consulting a dermatologist who can assess your skin's condition and suggest treatments to improve texture, hydration, and overall health. Meanwhile, make sure to stay hydrated, use a gentle moisturizer, and protect your skin from the sun.