KPOPORO · SoundCloud♥ BandcampNot playing

Round Lab Birch Moisturizing Double Gel Mask Guide: Inje Birch Sap Hydrogel and Routine Tips

Affiliate disclosure: POPORO BLOG may earn a commission from qualifying purchases made through links in this article, at no extra cost to you. We have not tested this product.

Round Lab Birch Moisturizing Double Gel Mask
Product photo from Round Lab.

Sheet masks are one of the easiest ways to try Korean skincare, and they are a familiar sight for K-pop fans who watch idols unwind after schedules in vlogs and reality clips. Round Lab's Birch line is the brand's moisture-focused family, and the Birch Moisturizing Double Gel Mask brings that idea into a hydrogel format. Here is what Round Lab says about it and how it could fit into your week.

What Round Lab says about it

According to Round Lab, the Birch Moisturizing Double Gel Mask delivers layered hydration and soothing comfort in a cooling hydrogel sheet. The key ingredient the brand highlights is birch sap from Inje, a region in Korea. Round Lab says the mask replenishes moisture and minerals while calming signs of sensitivity.

Hydrogel masks are different from the thin cotton or fiber sheets many people know. They have a jelly-like feel and tend to cling to the face, which is why Round Lab describes this one as cooling.

  • Format: hydrogel sheet mask
  • Pack: 5 pieces
  • Highlighted ingredient: birch sap from Inje, according to Round Lab
  • Price: listed at $13.30 for the 5-piece pack on Round Lab's US store at the time of writing

Where it fits in a routine

A typical Korean routine goes cleanse, toner, serum, cream, then sunscreen in the morning. A sheet mask usually slots in after toner, as an extra hydration step, on the days you have time for it.

  1. Cleanse your face gently.
  2. Toner to prep the skin.
  3. Mask: apply the Birch Moisturizing Double Gel Mask and follow the timing printed on the pouch.
  4. Serum and cream afterward, if you use them, to finish your routine.

Many people keep masks for the evening, when there is time to relax, but always follow the directions on the package. Because this is a 5-piece pack, it works well as a weekly treat rather than a daily step, unless the package suggests otherwise.

Who it might suit

Since Round Lab describes this mask as hydrating, soothing and cooling, it may appeal to people who want a moisture boost or who like a calm, cooling feeling at the end of a long day. If you already enjoy other products from the Birch line, this mask could be an easy way to extend that routine.

It may also be a good fit for travel or a busy week: a few masks take up very little space in a pouch. Round Lab's text that we saw does not name a specific skin type, so if your skin is very sensitive, read the full ingredient list before buying.

What to check before you buy

  • Ingredients: check the full ingredient list on the brand page for anything you know you react to.
  • Patch test: before using a full mask, try a little of the essence on a small area of skin and wait to see how it reacts.
  • Price and pack size: confirm the current price and the number of masks on Round Lab's page. At the time of writing, it was $13.30 for 5 pieces.
  • Shipping: check whether Round Lab's US store ships to your country and what the shipping cost will be.
vivid, a POPORO CITY character, arranging skincare pouches on a vanity at night
Mood image: an AI-generated scene with vivid of POPORO CITY. It does not show this product.

Our take

The Birch Moisturizing Double Gel Mask is an approachable way to try Round Lab's moisture-focused Birch line. According to Round Lab, it pairs birch sap from Inje with a cooling hydrogel sheet for layered hydration and soothing comfort. At $13.30 for five masks at the time of writing, it is a fairly low-commitment way to see whether hydrogel masks suit your routine. Patch test first, and check the latest details on the brand page.

See the Birch Double Gel Mask at Round Lab →

Information is based on Round Lab's product page as collected by KPOPORO. Details can change; please confirm on the brand page before buying.