It’s 30 gr not 30 ml. Unlike other masks I used, this has no excess essence in it, all is absorbed in the mask. There’s air in the packs (no holes, just an air pocket). Slightly too big for my face. It’s refreshing and adheres well to most of the face. The essence is slightly slimy, was still soaked after 20 mins. It was stinging my face a bit, maybe because I’ve used a cleaning brush right before applying it, so I wouldn’t use it if your barrier is compromised.