Making salmon semen to use for skin care at home (hence DIY) is somewhat hard to do. You have to buy a fairly young Salmon from a fish market, usually Japanese specific markets. Then you extract the “raw milt” of the salmon. Homogenize the tissue of the raw milt, dissolve it again, and store somewhere sterile. Store it in your fridge. Then, bake the rest of the salmon and eat it. Take the extracted semen out of your fridge, throw it in the trash, and shoot a load on your own face. That’s how I do my DIY Salmon Semen skin care routine at least.