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Description
About Hada Labo Koi-Gokujyun 3D Perfect Sheet Mask
The Hada Labo Koi-Gokujyun 3D Perfect Sheet Mask (肌ラボ 濃極潤 3Dパーフェクトマスク) belongs to Hada Labo's higher-concentration Koi-Gokujyun ("intense supple") line — a step up from the standard Gokujyun range. The mask is soaked in an essence containing four types of Hyaluronic Acid, including Sodium Hyaluronate Crosspolymer (3D Hyaluronic Acid), which forms a moisture-retaining network on the skin surface. The formula also includes Hydrolyzed Collagen, Glucosylceramide, and Squalane. Fragrance-free, colorant-free, mineral oil-free, and ethanol-free. One pack contains 30 sheets. Ships directly from Japan.
Key Benefits
- ✓ Sodium Hyaluronate Crosspolymer (3D Hyaluronic Acid) — forms a moisture-locking network across the skin surface
- ✓ Four types of HA: 3D Crosspolymer HA + Super HA (Sodium Acetyl Hyaluronate) + Nano HA (Hydrolyzed HA) + standard HA
- ✓ Hydrolyzed Collagen for skin-firming effect
- ✓ Glucosylceramide (ceramide) strengthens the skin barrier
- ✓ Squalane for deep moisturisation and shine
- ✓ Fragrance-free, colorant-free, mineral oil-free, ethanol-free
- ✓ 30 sheets per pack — over one month's supply for daily use
Product Details
| Brand | Hada Labo (肌ラボ) / Rohto Mentholatum |
| Product Name (EN) | Koi-Gokujyun 3D Perfect Sheet Mask |
| Product Name (JP) | 肌ラボ 濃極潤 3Dパーフェクトマスク |
| Category | Skincare / Sheet Mask |
| Product Type | Hydrating sheet mask |
| Quantity | 30 sheets per pack |
| Fragrance | Fragrance-free |
| Country of Origin | Japan |
| Skin Type | All skin types; particularly dry or dehydrated skin |
| JAN Code | 4987241137534 |
Who Is This For?
Recommended for anyone who wants to give their skin an intensive weekly or daily hydration boost. The Koi-Gokujyun (intense) line is particularly suitable for dry, dehydrated, or mature skin that needs extra moisture. The fragrance-free, alcohol-free formula makes it suitable even for sensitive skin types.
How to Use
- After cleansing (and optionally applying toner)
- Unfold and place the mask on the face, aligning with eyes and mouth
- Smooth the mask to fit snugly against the face contours
- Leave on for 5–15 minutes
- Remove and massage any remaining essence into the skin
Frequency: Can be used daily or a few times per week. Tip: Apply after toning for the best absorption of the essence.
Full Ingredients
Water, Glycerin, BG, Squalane, PPG-6 Decyltetradeceth-30, Pentylene Glycol, Sodium Hyaluronate Crosspolymer, Sodium Acetyl Hyaluronate, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Hydrolyzed Collagen, Glucosylceramide, Beheneth-5, Lauroyl Glutamate Di(Phytosteryl/Octyldodecyl), Carbomer, Tocopherol Acetate, EDTA-2Na, Xanthan Gum, TEA, Alpha-Glucan, Phenoxyethanol, Methylparaben.
Note: Contains Methylparaben (preservative). Those who prefer paraben-free products should be aware of this ingredient.
Cautions
- Avoid contact with eyes
- Perform a patch test before first use on sensitive skin
- Discontinue use if redness, itching, or irritation develops
- Keep out of reach of children
- Store away from direct sunlight and extreme temperatures
- Use each sheet immediately after opening — do not reuse
Package Contents
- 1 × Hada Labo Koi-Gokujyun 3D Perfect Sheet Mask — 30 sheets
Shipping & Store Notes
- Ships directly from Japan
- Processing time: 2–6 business days
- Tracking number provided after dispatch
- Import duties and taxes may apply depending on destination country
- Opened sheet masks cannot be returned for hygiene reasons
Authenticity Guarantee
Every product at Tsujimoto Market is sourced directly from Japan and verified for authenticity. We never sell fakes or grey-market goods.
Frequently Asked Questions
What is "3D Hyaluronic Acid"?
3D Hyaluronic Acid refers to Sodium Hyaluronate Crosspolymer — a crosslinked form of Hyaluronic Acid with a three-dimensional network structure. Unlike standard HA, it forms a moisture-retaining film across the skin surface that holds hydration in place longer. This is the key differentiator of the Koi-Gokujyun 3D Mask compared to the standard Gokujyun masks.
What is the difference between this and the standard Gokujyun sheet masks?
The Koi-Gokujyun line uses a higher concentration of Hyaluronic Acid types and adds 3D Crosspolymer HA, Hydrolyzed Collagen, Glucosylceramide, and Squalane. The standard Gokujyun range has a simpler, more basic formula.
Can I use this mask every day?
Yes — the formula is gentle enough for daily use. With 30 sheets per pack, daily use provides one month's supply.
Should I apply toner before putting on the mask?
Either approach works — the mask can be used directly on cleansed skin or after toner. Applying a hydrating toner first (such as the Hada Labo Gokujyun Lotion) before the mask may further amplify the moisture effect through layering.

