Well, Scott, according to the last Clinuvel trial 2008 Report of afamelanotide [melanotan-1], page number One:
(
http://www.clinuvel.com/resources/pdf/annual_reports/2008/photoprotective.pdf )
Dose per Kg is 0,02 mg / day.
16 mg implant in an aprox 10 days release means 1mg/day ( 1 mg in a 24 hours release), it should be for a medium weight of 70 kg. = 0.02 mg/Kg/day .
BUT if we understand that a single daily injection doesn´t means a constant release and the self life on the body is less than 2 hours the dose per injection is lower then than that.
At least this doses are tested safely for afamelanotide [melanotan-1] medical use, I dont know the result for tanning purposes, but I follow this doses (also lower) with moderate results during last summer