What ingredients should you generally avoid putting on your face?Does this sound good for an aftershave?

YES! this sounds like a very good solution for aftershave. These ingredients are some of the best for your skin. If your face is extremely sensitive like mine this should work out for you. Don't worry about the Glycerin if that is what's worrying you. on a 1-10 scale its a level 2 hazard. 10 being the worst and 1 being the best. The only thing unclear and very important to find out is what the last ingredient is. this can be many different things extremely damaging or nothing to worry about at all. But based on the other ingredients I would imagine it is nothing to stress over. These are expensive ingredients and someone that created this product most likely wouldn't spend all that money and go supper cheap on one ingredient. If you are really worried about I would call and ask the company what the essential oil is in this. Then go to skindeep.com and check for yourself of the hazards on this product.