First time poster here, long time lurker 
So I've made a bunch of DIY juices over the years, but this is my first time discovering this.
Recipe:
PG:VG 25:75 + 6mg nic 80% total
TPA Lemon Lime 15%
Cooling agent 3%
Ethyl Mathol 2%
juice was quite thick, probably because of high VG. but when I tried in my Subtank (OCC and rba) or in my Atlantis, I get dry hits after a few puffs.
Then today, upon looking at the bottle, I see this

Looks like...... oil? What is it exactly?
So I've made a bunch of DIY juices over the years, but this is my first time discovering this.
Recipe:
PG:VG 25:75 + 6mg nic 80% total
TPA Lemon Lime 15%
Cooling agent 3%
Ethyl Mathol 2%
juice was quite thick, probably because of high VG. but when I tried in my Subtank (OCC and rba) or in my Atlantis, I get dry hits after a few puffs.
Then today, upon looking at the bottle, I see this

Looks like...... oil? What is it exactly?