How do you use this? On its own or mixed with a moisturizer? Applied morning, evening, or both?

This product is designed to be applied alone. You can mix with a moisturizer if you wish. You can apply any time you wish but I think it works best applied at night as a nourishing overnight treatment. Usually used for problem areas like wrinkles around eye or dry spots on cheeks although you could use all over face if you wish.

what are the specific essential oils used in this product?

Meadowfoam seed oil, Shea butter extract, fractionated coconut oil,certified organic rose hip seed oil, vitamin E and jasmine absolute. It also lists pure essential oils but doesn’t name them. Good stuff. Just ordered my 3rd bottle. I’m 61, always had oily skin, never thought I’d use an oil on my face! This product has naturally occurring retinols! A bottle lasts me about a year. You use very little. I drop a little in my palm, rub my hands together, and press it into my skin. Love it!

Is this good for acne prone skin?

The Zum Nourishing Facial Oil is good for acne-prone skin. It is a light moisturizer, soaks in nicely, and is not greasy. It is perfect for use both day and night.