I made my first batch of liposomal C last week and thought it was a useful thing to be able to make. I've seen some places that claim it absorbs into the body even better than IV vit C. The gist behind making it is that you mix lecithin with asorbic acid (not buffered or other types of C) and the lipid from the lecithin coats the vit C. This apparently allows the vitamin C to absorb into your tissues to a higher degree.
What is needed:
an ultrasonic cleaner (the same that is used to clean jewelry)
a blender
lecithin powder
asorbic acid powder
distilled or purified water
It seems people mostly use soy lecithin, but I found some egg yolk lecithin on swansonviitamins and used the full bottle. It comes in capsules so you have to open them up to get the powder out. One full bottle is just shy of 6 TB, so if you use the following measurements you'll want to get a couple bottles.
6 1/2 TB of lecithin in 2 cups of warm distilled water mix until dissolved
1 TB of vit C powder in 1 cup of warm distilled water mixed until dissolved
mixed both together in a blender (it foams up so let it sit for a little while)
pour mixture into ultrasonic cleaner and run for about 5 minutes
A video with the same basic instructions can be found
here.
Using a blender alone will coat the vitamin C some, but an ultrasonic cleaner is needed if you want a high absorption rate. I bought a cheap one on amazon (around $25-$30), but you have to be careful when you're finished as it seems they can burn out pretty easily if liquid falls inside when it is being poured out. I used a small ladle to prevent this and cleaned it out with a paper towel.
My mother had a fairly nasty bug recently with a long lasting cough, and the liposomal C took it right away. I took some for a few days and could feel that it was quite a bit more powerful than just regular mega-dosing.