The best method is lightly sparying with water and microwaveing for a few seconds 10-20(depending on microwave). You will want to test your maicrowave if you havent ever done this I recommend 5 second intervals.
Some will say thats bad but let me explain why it isnt.
THC is what stones you it evaporates at 200 degrees, not 195 not 198 but 200.
Nuking for 10-30 seconds will never raise your herb even close to that temp.
Adding in fruit peels like these people are talking about is more for moisture control and less for fluffing.
After you fluff I would recommend a potato cut in half if its bad dry.(potatoes offer the best moisture but may also give the herb a funky smell if left in to long)
Orange peels are best if its just slightly dry or to just maintain a certain moisture.
After you get the herb where you want it vac packing or placing in freezer is a great way to keep your herb fresh.
I hope this helps you out some.
Jack