Wtf, it's some kind of magical elixir you're supposed to dribble directly onto your dick 
Every detail about this ad is so fucking funny, from the roaring wolfman to the text.
AliExpress is a Wild West of shady medical products like these. Why does Elon Musk spend tens of thousands on hair plugs when he could buy a Chinese remedy that would give him a full mane of hair in a week for 10 bucks
This stuff can get a lot darker, too.
CW: death by penile injury
A guy in Germany recently was sentenced for accidentally killing his grindr date with a DIY silicone oil injection. He told him "it's safe, i'm a paramedic" (he wasn't) and then hit a vein (which probably isn't that unlikely when you do dick injections) and the other guy got blood poisoning. Must've been an absolutely horrible way to go out, he spent several days in a hospital before the stuff killed him.