If humans would treat nature and themself better we wouldn't need any "beauty" products or even any medication in the first place.

How?

Just to artificially look "better" or live longer?

Vanity is a flaw, I agree. Age is not something to be ashamed of.

Everything that happens to us, is because our own selfishness ego to think we are the "alpha" product who owns everything, while we are just dumpshit animals with no respect for nothing.

Hubris is to blame for many mistakes people do but no animal or living being has respect for anything else besides the immediate survival. Animals will destroy others habitats, food, brood, etc, because the others impede their way.

You wan't to test some product? Go test it on criminals or orther deranged humans and leave those poor animals alone. But no, testing on non volunteer human is not ethical correct??

Why criminals? Why not simply use any individual. If consent is the crux of the matter, let's go that way full force.

Oh yeah that's were we draw the line.

Yes. It's called self preservation. All life is to be protected until there is no other option than to end it and carry the burden for such choice. We don't live in Dante's Inferno.