I have pilonidal cyst problem. Please tell me the name of hair removal cream on affected area? Or any anything to cure it?

Nair. Nair is a hair removal cream. You can also try laser hair treatment. Once study showed laser hair treatment with a 23% recurrence rate.
You will need surger. Any dipilatory cream will aid in the hair removal. However once the ponidal cyst is formed you will experience intermitant dpisodes of inflammation and infection. In my practice thus is best treated with surgical excision and advancement flap closure.