This would be a necessity especially if you live in colder and/or dry climates. I recommend applying a generous (but not heaping) amount all over your face and neck before you go to sleep. Don't massage it into your skin completely so that it continues to absorb throughout your night. Do this 1-2 times a week. Yes, it's in a jar, but just be good with hand hygiene or use the scooper and be sure to clean it after each use.
I have looked up every single ingredient in this product and everything was rated no lower than "good" and the majority were "very good". I have had no issues with breaking out after using this product.
This mask was such a disappointment. It did nothing for my skin. The consistency is very unpleasant and almost gooey. Upon removing the mask after 15 minutes, I was left with a complexion that somehow looked even more dehydrated and slightly irritated. Luckily, I had a sample of this and tried it first before blowing money on this absolutely astronomical overpriced product. I recommend trying to obtain a sample before purchasing to see if this product will work for you.