I've used Melanotan II a couple of times with great results, like one of the previous posts I got a little too dark as well.
I have naturally light skin/eyes and typically require sun block to avoid burning. While I was taking MT II I could stay out in the sun for 5 hours without any sun block and not even be close to burning.
From what I've read on melanotan.org the dose is weight dependant. I weigh 210 and followed the suggested guidelines the first time and had great results, but went through a lot of MT II in the process---the stuff isn't cheap.
The second time I used MT II I started with 1.25 mg every day for 14 days, then went to 1 mg every other day for 21 days, then 1 mg every 3 days for another 36 days. I think I may have been able to go even lower on the maintenance dose too.
I got a little bit of an upset stomach at 1.25 mgs, but it went away after the first week.
I didn’t notice any new moles, but existing freckles got a lot darker. They went back to their normal coloration a few weeks after stopping MT II.
One odd thing I noticed is that my urine was darker when I was taking MT II.
Here's the dosing scheme from melanotan.org:
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DOSING AMOUNT
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Find your weight on the chart below. 10mg is the average amount of one cycle. About 3 cycles are needed for the "loading phase." For someone of average weight (140-175), around 30mg is needed. This amount will vary from person to person. Heavier people, and skin type 1's need more than lighter people and those with higher skin types.
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10 mg / 12.00 injections = 0.833 mg --- 42 kg = 92 lbs @0.02mg/kg
10 mg / 11.50 injections = 0.870 mg --- 43 kg = 96 lbs @0.02mg/kg
10 mg / 11.00 injections = 0.909 mg --- 45 kg = 100 lbs @0.02mg/kg
10 mg / 10.50 injections = 0.952 mg --- 48 kg = 105 lbs @0.02mg/kg
10 mg / 10.00 injections = 1.000 mg --- 50 kg = 110 lbs @0.02mg/kg
10 mg / 9.50 injections = 1.053 mg --- 53 kg = 116 lbs @0.02mg/kg
10 mg / 9.00 injections = 1.111 mg --- 55 kg = 122 lbs @0.02mg/kg
10 mg / 8.50 injections = 1.176 mg --- 59 kg = 130 lbs @0.02mg/kg
10 mg / 8.00 injections = 1.250 mg --- 63 kg = 138 lbs @0.02mg/kg
10 mg / 7.50 injections = 1.333 mg --- 67 kg = 147 lbs @0.02mg/kg
10 mg / 7.00 injections = 1.429 mg --- 71 kg = 157 lbs @0.02mg/kg
10 mg / 6.75 injections = 1.481 mg --- 74 kg = 163 lbs @0.02mg/kg
10 mg / 6.50 injections = 1.538 mg --- 77 kg = 170 lbs @0.02mg/kg
10 mg / 6.25 injections = 1.600 mg --- 80 kg = 176 lbs @0.02mg/kg
10 mg / 6.00 injections = 1.667 mg --- 83 kg = 184 lbs @0.02mg/kg
10 mg / 5.75 injections = 1.739 mg --- 87 kg = 192 lbs @0.02mg/kg
10 mg / 5.50 injections = 1.818 mg --- 91 kg = 200 lbs @0.02mg/kg
10 mg / 5.25 injections = 1.905 mg --- 95 kg = 210 lbs @0.02mg/kg
10 mg / 5.00 injections = 2.000 mg --- 100 kg = 220 lbs @0.02mg/kg
10 mg / 4.75 injections = 2.105 mg --- 105 kg = 232 lbs @0.02mg/kg
10 mg / 4.50 injections = 2.222 mg --- 111 kg = 245 lbs @0.02mg/kg
10 mg / 4.25 injections = 2.353 mg --- 118 kg = 259 lbs @0.02mg/kg
10 mg / 4.00 injections = 2.500 mg --- 125 kg = 276 lbs @0.02mg/kg
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For example, someone weighing 184 lbs should be taking a dose of 1.66667mg daily. They will be able to get this amount out of the vial 6 times ( 10 / 1.66667 = 6)
Many people have began to emulate the slow-release method by giving themselves multiple injections daily. For example, that 184 lb. person would take 2 injections (1 morning / 1 night) of about .8333mg.