Does anyone think Melanin (the skin pigment) could be used as a pheromone? It may seem a bit odd but I have a hunch about this one.

There's many theories on Melanin around, f.e http://en.wikipedia.org/wiki/Melanin_theory which is mainly used to advocate afrocentricism.

I have a bottle of about 10ml melanin here, used for injections that give the person a more colored tint (like doing a tan) and also increase skin smoothness etc, about the best quality you can get on the streets here. How do I go about testing this? dissolve in alcohol like the usual method?

Wow interesting - Pretty Fly for a White Guy mones!

Sorry if you know all this already but if you don't it is critical info:

The homebrew/DIY protocol on a number of threads in the forums is probably the way to go - get some small 5-10 ml containers with caps (the ones for tattoo ink and fingernail salon colors work great) and try a serial dilution - one 5-10 ml blend to be your starting stock solution of full strength, take half of that and put into the next container and dilute by half, repeat until you get down to something like 1-5 mcg per dose (spray/drop) or run out of interest...

You need to know the concentration of your melanin (AKA stock solution) to know what you will have each time you dilute it. You can do the dilution and figure out the concentration later, just label everything with painter's tape (the blue tape) and a sharpie so you keep track of what you are using.

Dilute with Everclear (190 proof grain ethanol AKA ethyl alcohol AKA EtOH) - the droppers from the pharmacy will have 1/2 ml markers on them which should be fine for homebrew, just use separate droppers for the alcohol and stock solution and each of the diluted solutions. Cleaning your equipment with hot soapy water then the strongest isopropyl (uscented rubbing) alcohol you can find will get them clean enough again - I use the bottle brushes for cleaning baby feeding bottles - tiny and cheap!

Once it is diluted it will need something to keep it from flying away as quickly as the alcohol evaporates - the homebrew/DIY threads have tons of instructions and I won't attempt to repeat all that info, but some type of oil or DPG will slow the diffusion to an acceptable level.

Ok, it seems I had a few things confused (or well, my friend/supplier had). Its not pure melanin, but rather Melanotan 2

Melanotan II (i/mɛˈlænɵtæn/) developed at the University of Arizona is a synthetic analog of the naturally occurring melanocortin peptide hormone alpha-melanocyte stimulating hormone (α-MSH) that in usage has been shown to have melanogenesis (tanning) and aphrodisiac effects in preliminary studies and clinical trials.[1][2][3] It is a cyclic lactam analog of α-MSH with the amino acid sequence Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2.

Of interest to anyone who has a reichian/jungian psychology background:
Melanotan II has tanning activity in humans given only 5 low doses every other day by subcutaneous injection." The side effects reported were mild nausea and a "stretching and yawning complex" that correlated with spontaneous penile erections.[13]
http://en.wikipedia.org/wiki/Melanotan_II

I might give it a try tho, my instincts tell me this could atleast give some interesting results.

Yikes sounds like horrid stuff - I'd just chalk it up to getting ripped off and throw it away, you have no way to know what it really is, might be toxic waste...

You might be able to mist Melanotan II, but it looks far too big to fly on its own. Molar mass of 1024 compared to androstanes which are under 300. (Testosterone is Mol. mass 288.42, for instance)