Anything that could help spider-web veins in penis? young, not painful. very dark and sometimes noticeable. warm or cold compress? which better?

Here are some ...: From what you described, doing nothing with them is the most reasonable thing to do; applying something chemically or physically may induce more unwanted harm. To comfort and assure your mind, it's reasonable to have urologist take a look and counsel you for what they are and you may expect so you will know how to watch. Remember: In medicine, always balance medical necessity & prof-possibility.