ROUND LAB 1025 Dokdo Sleeping Pack | Deep Sea Water PHA Overnight Mask (100ml)
ROUND LAB 1025 Dokdo Sleeping Pack | Deep Sea Water PHA Overnight Mask (100ml)
Where Nothing Has Grown in a Thousand Years.
What It Is
ROUND LAB 1025 Dokdo Sleeping Pack is an overnight gel mask applied as the last step of your evening routine and rinsed off the next morning. It's built around deep sea water sourced from the waters near Dokdo and Ulleungdo, filtered through the brand's patented mineral water process, and paired with Lactobionic Acid — a PHA (polyhydroxy acid) chosen specifically for its gentler exfoliation profile, which matters when a product is sitting on your skin for hours rather than minutes. The gel-silicone texture forms a light, breathable film that helps skin hold onto moisture overnight. 100ml / 3.38 fl. oz.
Why Deep Sea Water, and Why PHA
- The water is sourced from roughly 5,000 feet below the surface, a depth with no sunlight and no photosynthesis — which is the actual reason the brand can claim it's free of organic contaminants and bacteria, not just a purity slogan. At that depth, the conditions that would introduce biological contamination simply aren't present.
- It's mineral-dense by nature, not by additive — deep ocean water carries magnesium, calcium, zinc, and dozens of other trace minerals in naturally occurring concentrations, which is the basis for the "72 minerals" claim you'll see repeated everywhere without explanation.
- PHA (Lactobionic Acid) has a larger molecular structure than AHA or BHA, which means it penetrates more slowly and is generally considered gentler and less irritating — a reasonable choice for a product designed to stay on skin all night rather than being rinsed off in minutes like a typical exfoliating treatment.
- The gel-silicone base forms a light barrier film, which is why the texture "adheres" to skin as several reviewers describe — it's designed to slow moisture loss overnight rather than sit as a heavy occlusive layer.
Know What You're Buying
Round Lab has reformulated this product before, and both older and newer versions have circulated through retailers simultaneously. This listing is built on the brand's current official formula, centered on Lactobionic Acid (PHA). An earlier version of this product used a different base built around a triple hyaluronic acid complex with no PHA at all. If your packaging's ingredient list doesn't include Lactobionic Acid, you likely have the earlier formulation and this listing's active-ingredient claims won't match — worth a quick check before publishing.
Key Ingredients
Sourced from deep, mineral-rich waters near Dokdo and Ulleungdo and processed through a patented membrane filtration method. Contributes naturally occurring magnesium, calcium, zinc, and dozens of additional trace minerals that support the skin's moisture balance.
A gentle, low-irritant exfoliating acid that helps lift away dull, dead skin cells and unclog pores while supporting a more even skin tone over time — formulated at a level suited to overnight, leave-on use rather than a rinse-off treatment.
A well-established humectant that draws and holds moisture in skin, reinforcing the overnight hydration this mask is built around.
Supporting Ingredients
Panthenol (Pro-Vitamin B5) supports hydration and barrier comfort; Dipotassium Glycyrrhizate, derived from licorice root, contributes calming, skin-conditioning properties — together softening the overall feel of the formula.
A plant-derived extract included as part of the formula's supporting botanical profile alongside the mineral-forward lead ingredients.
A blend of silicone-derived ingredients (including Dimethiconol and Polymethylsilsesquioxane) responsible for the mask's light, breathable gel texture — this is what creates the moisture-retaining film that gives the product its "lightly adhered" overnight feel.
Who It's For
- Dull, tired-looking skin
- Combination skin with an oily T-zone
- Uneven texture or dead skin buildup
- Those wanting a simplified evening routine
- Skin that dehydrates overnight
- First-time PHA users wanting a gentler entry point
- Travel nights when a full routine isn't practical
- All skin types, including sensitive
How To Use
- Refrigerate for a cooling effect. Storing the mask in the fridge enhances the calming, cooling sensation on application — genuinely useful for inflamed or overheated skin, and not required otherwise.
- Patch test if you're new to PHA. While gentler than AHA or BHA, any exfoliating acid used overnight deserves a patch test on first use, especially for sensitive skin.
- Use 2–4 nights per week to start. Since this is a leave-on exfoliating product, nightly use isn't necessary for most skin types — build up frequency based on how your skin responds.
- Don't layer heavy actives underneath. Keep the rest of your evening routine light on nights you use this, since you're already adding an overnight acid step.
- Confirm your formula version against the ingredient list before committing to a full routine built around this specific PHA-based version.
Frequently Asked Questions
Water, Glycerin, Butylene Glycol, C13-16 Isoparaffin, C12-14 Isoparaffin, 1,2-Hexanediol, Panthenol, Sea Water, Trichosanthes Kirilowii Root Extract, Hydrogenated Polydecene, Pentylene Glycol, Vinyl Dimethicone, Caprylyl Methicone, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Dimethiconol, Lactobionic Acid, Polymethylsilsesquioxane, Tromethamine, Dipotassium Glycyrrhizate, Glyceryl Acrylate/Acrylic Acid Copolymer, Ethylhexylglycerin, Xanthan Gum, Disodium EDTA. Ingredients are subject to change at the manufacturer's discretion — always confirm against current packaging.
Product Details
| Brand | ROUND LAB (Barunson Co., Ltd.) — South Korea |
| Product | 1025 Dokdo Sleeping Pack |
| Net Weight | 100ml / 3.38 fl. oz |
| Lead Ingredients | Deep Sea Water, Lactobionic Acid (PHA), Glycerin |
| Formula Type | Overnight leave-on gel mask |
| Skin Type | All skin types, including sensitive · Especially dull, dehydrated, or textured skin |
| Free Of | Fragrance, sulfates, parabens, common allergens |
| Country of Origin | Republic of Korea |
| Usage | PM only · Final step before bed · Rinse off in the morning |