Hair fall, Dandruff & skin problem.

Past two months I am experiencing hair fall. Every time i comb my hair by fingers then four five hairs are stuck to my fingers. For past two years I get powder form dandruff & grey & dry hair. Due to dandruff I get pimples on my forehead & on & around eye lashes. Past three years have acne & wrinkles over my face & dark spots on my nose though I don't wear spects. My face skin is sometimes oily or dry as per season.Any skin creams does not suit me & I feel more oily. I get sweat very often in summer & rainy, not in cold winter & body odour due to sweat. In summer feel like bathing again & again. Also I have dark skin on my groin area & testitles & I have darker patches on my buttock area. My Vitamin D & B12 are normal.I am using neem purifying face wash as of now for face & L'Oréal hair spa for my hair. Can you prescibe to reduce face acne, wrinkle, pimple prescibe good face wash, body soap/wash, prescibe to reduce darkness in groin area, lighten buttock area & reduce sweat body odour