I've had white patches underneath the tip of my penis for a few months now, how can I get rid of them

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attached is an image but i really dint know what to do. im a 19 year old virgin male. ive tried everything from coconut oil to creams but itll disappear and then reappear a few hours later. everytime i have a shower and only wash my penis with water they appear. please help, what does it look like?

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