I have been using 75 PG 25 VG and my acne cleared up to almost none. However i decided to try 50/50 and my face broke out all over again. So i now know it is the VG that makes me get bad acne. So back to 75 PG 24 VG. I would just go completely 100% PG but i heard it is hard to breathe at 100%. So i will stick with the 75/25 . So glad to finally get my face back and to know why it was happening.