Once reconstituted the solution should be used within 2 months, this is a guide line and not a rule (more of a best before date and not a use by date). So long as the solution has been stored correctly and has not been exposed to heat or direct sunlight it should be OK to use, but it won’t be as potent. 

Nausea is a perfectly normal side effect of melanotan 2 and usually dissipates once the body has become accustom. There are a couple of ways to combat it that are clearly outlined in our tutorial. Basically, you can
A) lower your dose.
B) Use an antihistamine.
C) Dose before bed. 

The answer to this question really depends on a couple of factors. Mainly how dark you want to be and your natural skin tone please refer to the Fitzpatrick chart below. 

Yes, there is. But it gets a little complicated. Basically, you can double our recommended dose till 1 MG/20 IU. Or to do it correctly take you body weight in KGS /100 = 0.MG of melanotan 2 for example a 80 Kgs person correct dose is 0.8 MG per dose/day. We recommend a dose of 0.5 MG's per dose/day…. Which is enough. Think of your body like a sponge it can only absorb so much, more is not better. But be careful you can still burn under UV exposure, everyone need a base tan before prolonged exposure till UV. We recommend the more cautious approach. 

After you reach 8 spread out sprays in a day you really need to expose yourself to the sun or UV on a sunbed. This will Rapidly accelerate the tanning process.