yep, you need to get some 100mg nic concentrate, and add 1.6ml concentrate to 12ml of your
juice. WEAR GLOVES. 100mg nic is VERY strong, and dangerous. 1ml soaked into your skin of that would make you extremely ill, and would kill a small child or pet.
You'll be diluting your flavor by 18%, it will be noticeable.
Please read all the DIY cautions before attempting to handle nicotine of that potency. It is very serious stuff. Do it in a tray, wear gloves and safety glasses, and be careful not to get that concentrate on anything.