The thread Ice House linked to was a long one that started in the middle of 2011 and proceeded with a number of advancements and a general progress in doing this ROA efficiently and consistently. Towards the very end of the thread in the late autumn, I personally discovered a major breakthrough which completely eliminated any burn.
Post #146
The jist of it is to make a nasal solution for insufflation, and add a small amount of coconut cream to this. It works REALLY well.
While any freebase or salt should work, it seems to me that making your freebase into DMT Acetate is probably the way to go. Acetate is very hygroscopic and is pretty much always a goo.
HF's Concise Insufflation Method:
Take a quantity of freebase DMT and combine it with a very small amount of vinegar. (enough to cover the DMT)
Add an equal amount of warm water.
Add a knife tip of coconut cream. (preferably the fairly solid kind and organic/bio)
Stir, shake or swirl until well mixed.
This somewhat thick and cloudy liquid can be insufflated from a small spoon, a pippete, or ideally from a nasal spray with a fine atomizer effect. Most nasal sprays can be converted for this purpose rather easily.
Keep track of your weights and start off small.
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Final note: There are a couple of ways to enhance this already great method.
1) Pre-dose with harmalas
2) add some harmalas to the solution
3) insufflate while on aya (even a low dose will make a difference)
4) take micro-vapes after insufflation to get breakthroughs
5) Add a tiny bit of pure Aloe Vera juice to the solution (I would use the pure juice designed for internal consumption or fresh product and not gels or creams)
These are
optional additions because they are not necessary. The methodology outlined above will work foolproof with no modification. Simply start low 10-20mg DMT and work your way up. With a nasal spray, you can measure it out so that each pump is equivalent to 5mg or so. Then you can do a pump in each nostril wait a few minutes and note how you feel. Up the dosage a pump or two each time. This is important because heavy effects can be had with as little as 15mg yet some people require 100 or more to achieve their goal.
All the best
HF