Frequently Asked Questions

What is mulberry silk?

  • Mulberry silk is the highest quality silk in the world, produced by silkworms fed exclusively on mulberry leaves. It is naturally soft, hypoallergenic, and temperature regulating.

What is 23 Momme?

  • Momme is the weight measurement for silk. 23 Momme is the optimal weight for bedding — dense enough to be durable, light enough to feel luxurious.

What is silver ion technology?

  • Silver ions are woven into the silk to provide antibacterial protection. This keeps your pillowcase fresher for longer and helps reduce acne-causing bacteria.

How do I wash my silk products?

  • Hand wash in cold water with a gentle detergent, or use a delicate machine cycle in a mesh laundry bag. Hang to dry. Do not tumble dry or iron at high heat.

What is your return policy?

  • We offer a 30-day return policy on all unused products in original packaging. Please contact hello@yoolseoul.com to initiate a return.

Do you offer free shipping?

  • Yes. All US orders over $60 ship free. International shipping rates are calculated at checkout.