So, what does the kit include? Step one is a cleanser officially available in the U.S. for the first time, the 9 Wishes Rice Foaming Cleanser. It's flecked with fine grains of rice to help sweep away not only makeup and grime on your face but also dead skin cells. The second step is the popular Maycoop Raw Sauce, which is a toner infused with maple tree sap that helps skin better absorb the eight other steps. You can follow with the all-natural Urang True Rose Repair Essence. You're about to see a lot more of this K-beauty brand, which was started by an aromatherapist. Mark my words.

Immediately after the essence comes a spritz of step four: the One O Seven Core Flex Essential Liquid, a serum spray. (I have a feeling serum sprays are going to be the next sheet mask.) By the way, that K-beauty innovation is also included in the box. Umma had the most difficult time picking just one sheet mask from one brand, but it selected the brightening All-in-One Concentrate Treatment Mask from I Woke Up Like This. Known simply as IWLT, too, the K-beauty brand was founded by Korean influencer Han Yeona, who has the glass skin of Instagram dreams. Plus, Umma is such a fan of the brand that it also included IWLT's Protective Base Suncream.

This is a lot to remember, so Umma included a handy booklet in the Case Full of Seoul and each product in the box is labeled. The box also calls out specific routines for when you don't have the energy to go through all 10 steps. You can shop the box now on costco.com for $150. Not a member? No worries, the Case Full of Seoul is available to everyone, no membership required.

More on K-beauty products Allure editors love:

Now, see Jihae's all-natural beauty routine in action:

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