penis has these wierd marks after masturbating i feel like it slowly getting better but if you know or seen anything like the picture above let me know
Andres, the main problem is your penile skin is severely dry - it looks like you have been circumcised, and this would partly explain the dryness.
The other major issue for penile skin in drying it out is the use of soap and things like shower gel: here is one of my Guides, it is of most benefit to those who are not circumcised …
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Dealing with Dry Glans & Penile Skin
So, the essential is not to directly apply soap and other forms of body wash to your penis. If you are not circumcised, draw your foreskin as far forward as possible before you get in the shower to protect the glans / head and inner-foreskin.
Wash everywhere else on your body and fully rinse, expose the head of your penis and wash with the running shower water only and rub the head and inner-foreskin with the inside of the hand and fingertips to clean.
Just as important is drying penile skin - no moisture should remain, use a clean dry towel that ONLY you use.
There are two plant-extract products that can help with dry penile skin: SHEA butter and Liquid Coconut Oil. You only need a very light coating of either of these, apply after you have taken a shower, or every other day …
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For you to see much healthier skin you will need to prevent soap and shower gel and other forms of body wash from contacting your penile skin - if you are circumcised you may not see any real difference for several YEARS - in the main this is because skin of the upper-shaft and head of the penis take a great deal of time to recover. Certainly, if you have been circumcised this will also be part of the problem …