And here’s the thing: Is it expensive? Yes. However, I always recommend investing in your serum or moisturizer (as opposed to cleansers) since they tend to be more concentrated in actives and stay on your skin for a longer period of time. The 30mL full size lasted me a few months with nightly use, and I just replaced it with a refill pod. (Which, when the packaging is as gorgeous as Nocturnal’s, it genuinely makes me want to reuse it forever.) And since I’ve been using Polar Night, I’ve haven’t wanted to book a facial or invest in richer moisturizers since my skin is already happy and hydrated. Serums that work smarter and harder? Here for it.