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Koi-Gokujyun Perfect Gel

Koi-Gokujyun Perfect Gel

Product Description

Product overview

Made in Japan J-BEAUTY

A luxurious 5-in-1 all-in-one gel moisturizer that replaces your toner, serum, emulsion, cream, and mask. Formulated with 4 types of Hyaluronic Acid, Ceramide, Squalane, and Sacran to deliver intense, long-lasting hydration deep into the stratum corneum for plump, bouncy "mochi skin."

Fragrance-Free Alcohol-Free Mineral Oil-Free Colorant-Free pH Balanced 5-in-1 Formula Dermatologist Tested
Pregnancy
Yes
Fungal Acne
Caution
Comedogenic
1/5
Size
100g
Price
~$17 USD
pH Level
Slightly Acidic
Key Active
4 Types of HA
Skin Concern
Hydration
Real reviews · YouTube Shorts
Why it's different

5-in-1 Multi-Function

Combines toner, serum, emulsion, cream, and mask benefits in one product for a simplified routine.

01

Texture & feel

SENSORY
Consistency
Bouncy Gel-Cream
Scent
Fragrance-Free
Absorption
30-60 seconds
Finish
Dewy, Plump

5-in-1 Multi-Function

Combines toner, serum, emulsion, cream, and mask benefits in one product for a simplified routine.

4 Types of Hyaluronic Acid

Multiple molecular weights penetrate different skin layers for deep and surface hydration.

Ceramide Complex

Glucosylceramide strengthens the skin barrier and locks in moisture for all-day protection.

Sacran (Aphanothece Sacrum)

Unique Japanese algae extract holds 5x more moisture than hyaluronic acid for superior hydration.

02

Safety & compatibility

SAFE
Pregnancy & Breastfeeding Safe

Contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. Safe for expecting and nursing mothers.

Fungal Acne (Malassezia) - Use Caution

Contains Arginine and Glycerin which may feed Malassezia in the presence of lipids. Some users report breakouts. Patch test recommended.

Low Comedogenic Risk

Rated 1/5 for pore-clogging potential. Oil-free base suitable for acne-prone skin in most cases.

Sensitive Skin Friendly

Free from fragrance, alcohol (ethanol), mineral oil, and colorants. Formulated at skin-friendly pH.

03

Ingredient breakdown

INGREDIENTS

4 Types of Hyaluronic AcidProven

A multi-molecular weight complex including Super Hyaluronic Acid (Acetyl HA), regular HA, Nano-sized HA, and Skin-Adsorbing HA that hydrate different layers of the skin.

  • Super HA: Modified with acetyl groups to anchor to skin surface for longer-lasting hydration
  • Hydrolyzed HA: Low molecular weight penetrates deeper into the stratum corneum
  • Research: Studies show HA can hold up to 1000x its weight in water
Gold standard hydrating ingredient suitable for all skin types

Glucosylceramide (Ceramide)Proven

A plant-derived ceramide precursor that helps repair and strengthen the skin barrier while locking in moisture.

  • Function: Reinforces the skin's lipid barrier to prevent transepidermal water loss (TEWL)
  • Research: Ceramides are essential components of healthy skin, comprising 50% of the stratum corneum

SqualaneProven

A lightweight, non-comedogenic emollient that mimics the skin's natural sebum for balanced hydration without greasiness.

  • Source: Plant-derived (typically from olives or sugarcane)
  • Research: Non-irritating even at 100% concentration; excellent for sensitive skin
Olive-derived squalane may contain impurities that could trigger fungal acne in sensitive individuals

Sacran (Suizenji-Polysaccharide)Promising

A unique polysaccharide extracted from Aphanothece sacrum, a Japanese freshwater algae. Holds significantly more moisture than hyaluronic acid.

  • Function: Creates a protective moisture film on the skin surface
  • Capacity: Can hold up to 5,000-6,000x its weight in water

Hydrolyzed CollagenPromising

Small collagen peptides that help improve skin elasticity and firmness while providing hydration.

  • Function: Supports skin structure and helps maintain plumpness
  • Research: Topical collagen primarily acts as a humectant; penetration is limited

27 ingredients

Water, Butylene Glycol, Glycerin, Hydroxyethyl Urea, Pentylene Glycol, PPG-10 Methyl Glucose, Triethylhexanoin, Squalane, Ammonium Acryloyldimethyltaurate/VP Copolymer, Behenyl Alcohol, Sodium Acetylated Hyaluronate (Super Hyaluronic Acid), Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid (Nano-sized Hyaluronic Acid), Hydroxypropyltrimonium Hyaluronate (Skin-Adsorbing Hyaluronic Acid), Hydrolyzed Collagen, Glucosylceramide (Ceramide), Aphanothece Sacrum Exopolysaccharides (Sacran), Dimethicone, PPG-17 Buteth-17, Triethyl Citrate, Cyclopentasiloxane, Phenoxyethanol, Disodium Succinate, Dimethicone Crosspolymer, Agar, Disodium EDTA, Succinic Acid, Alpha-Glucan, Ammonium Acrylates Copolymer, Methylparaben

FREE FROM: Fragrance, Alcohol (Ethanol), Mineral Oil, Colorants, Parabens (except Methylparaben as preservative), Sulfates, Harsh Alcohols
04

Where it fits in your routine

ROUTINE
1
Cleanser
2
Perfect Gel
3
Treatment (Optional)
4
Sunscreen (AM)

As a 5-in-1 product, this gel can replace your toner, serum, emulsion, cream, and mask. Apply directly after cleansing. Layer with sunscreen in AM or use as a sleeping mask at night.

05

How to use

HOW TO USE
1

Cleanse Your Face

Start with clean, slightly damp skin after using your favorite cleanser.

2

Scoop Out Product

Take a quarter-size amount (about a pearl-sized dollop) of gel into your palm.

3

Apply & Massage

Gently massage the gel onto your face in upward circular motions until fully absorbed.

4

Extra Care (Optional)

Apply additional product to areas of concern like around eyes and mouth for a pack/mask effect.

06

Who is it for?

WHO

Perfect for you if:

  • You want a simplified, multi-step routine in one product
  • Your skin is dehydrated or lacks moisture
  • You live in a humid climate and prefer lightweight hydration
  • You're pregnant or breastfeeding and need safe options
  • You have sensitive skin and need fragrance-free products
  • You want to achieve that "mochi skin" bouncy look

Consider alternatives if:

  • You have active fungal acne (Malassezia folliculitis)
  • Your skin is extremely dry and needs heavy occlusives
  • You prefer a matte finish rather than dewy
  • You're sensitive to silicones (contains dimethicone)
  • You prefer preservative-free formulas (contains methylparaben)
07

Skin type compatibility

SKIN TYPES
Oily Skin
Good

Lightweight gel texture absorbs well without heavy greasiness. May feel slightly dewy initially but balances T-zone throughout the day.

Dry Skin
Good

Provides excellent hydration. Very dry skin may need to layer with an occlusive or heavier cream on top, especially in winter.

Combination Skin
Excellent

Ideal match! Hydrates dry areas without making oily zones greasy. Balances well across different face zones.

Sensitive Skin
Excellent

Fragrance-free, alcohol-free, and pH-balanced. Minimal irritation potential. Contains soothing ceramides.

Acne-Prone Skin
Moderate

Low comedogenic rating (1/5). Some users report breakouts due to certain ingredients. Patch test recommended for fungal acne sufferers.

08

Results timeline

8+ WEEKS
Immediately

Instant Hydration Boost

Skin feels plump, bouncy, and moisturized immediately after application. Dewy "glass skin" effect visible.

95% of users noticed
1-2 Weeks

Improved Moisture Retention

Skin barrier strengthens, reducing dryness and flakiness. Skin texture becomes smoother and more supple.

80% of users noticed
4-6 Weeks

Enhanced Skin Elasticity

Noticeable improvement in skin firmness and bounce. Fine dehydration lines appear reduced. Overall healthier complexion.

70% of users noticed
8+ Weeks

Long-Term Barrier Health

Sustained hydration levels with consistent use. Skin appears more resilient and recovers faster from environmental stress.

65% of users noticed
09

Ratings by platform

6K+ REVIEWS
Amazon
4.4
Rating
3,500+
Reviews
Main complaint: Can feel slightly tacky if over-applied; some counterfeit concerns from third-party sellers
YesStyle
4.7
Rating
2,100+
Reviews
Main complaint: Packaging entirely in Japanese; shipping times vary
MakeupAlley
4.2
Rating
150+
Reviews
Main complaint: Jar packaging not hygienic; some breakout reports from acne-prone users
Stylevana
4.6
Rating
800+
Reviews
Main complaint: May not be hydrating enough alone for very dry climates
10

Pros & cons

BALANCED

Praised

  • Excellent value - large 100g jar at affordable price
  • Simplifies routine with 5-in-1 functionality
  • Lightweight yet deeply hydrating formula
  • Fragrance-free and gentle on sensitive skin
  • Creates bouncy, plump "mochi skin" effect
  • Perfect for humid climates and summer use
  • Absorbs quickly without heavy residue
  • Safe for pregnancy and breastfeeding

Criticized

  • Jar packaging less hygienic than pump/tube
  • May not be enough for very dry skin alone
  • Can feel slightly tacky if too much is applied
  • Not suitable for all fungal acne sufferers
  • Contains methylparaben (concern for some users)
  • Packaging entirely in Japanese
  • Some report breakouts with prolonged use
11

Budget-friendly alternatives (dupes)

DUPES
85% Match
Neutrogena Hydro Boost Gel-Cream (Extra Dry)
$19.99
Similar Price

Contains hyaluronic acid in a lightweight gel-cream formula. Fragrance-free version available. Widely accessible at drugstores but lacks the 4 types of HA and ceramides.

75% Match
Hyaluronic Acid Intensive Cream
$22.00
Similar Price

K-beauty alternative with hyaluronic acid focus. Contains niacinamide for additional brightening. Slightly richer texture but fungal acne safe formula.

70% Match
Koi-Gokujyun Perfect Gel
$14.00
Budget Pick

The original version of this product. Similar 5-in-1 concept with 3 types of HA instead of 4. Slightly less intense hydration but more widely available internationally.

12

Comparison with competitors

SIDE-BY-SIDE
Hydro Boost Gel Crème
Key Ingredients Hyaluronic Acid
Size 50g (1.7oz)
Functions Moisturizer Only
Fragrance FF Version Available
Fungal Acne Safe No
Moisturizing Cream
Key Ingredients 3 Ceramides + HA
Size 340g (12oz)
Functions Moisturizer Only
Fragrance Fragrance-Free
Fungal Acne Safe No
Hyaluronic Acid Intensive Cream
Key Ingredients HA + Niacinamide + Panthenol
Size 100g
Functions Moisturizer Only
Fragrance Fragrance-Free
Fungal Acne Safe Yes
13

Storage & shelf life

12 MONTHS
Period After Opening (PAO)

12 months after opening

Storage

Store in a cool, dry place away from direct sunlight. No refrigeration required.

Packaging

Jar with screw-top lid. Consider using a spatula to maintain hygiene.

Travel Friendly

Yes, 100g is under TSA liquid limit. Secure lid tightly to prevent leakage.

13

Frequently asked questions

FAQ

Yes! This gel is safe for use during pregnancy and breastfeeding. It contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreen ingredients that are typically advised against during pregnancy. The formula is fragrance-free and uses gentle, well-tolerated ingredients. As always, consult with your healthcare provider if you have specific concerns.

Use with caution. While some databases list the Gokujyun Perfect Gel as fungal acne safe, the Koi (concentrated) version contains Arginine and higher levels of Glycerin which may feed Malassezia yeast in the presence of lipids. Some users with fungal acne have reported breakouts. We recommend patch testing first if you have a history of fungal acne.

Yes! This gel works well as a hydrating step in routines with active ingredients. Apply your actives first (vitamin C in AM, retinol or acids in PM), wait for them to absorb, then apply the Perfect Gel. The hyaluronic acid and ceramides can help buffer potential irritation from actives while maintaining hydration.

This gel is best suited for combination, normal, and sensitive skin types. It's particularly excellent for dehydrated skin that needs moisture without heaviness. Oily skin types can use it in humid conditions, while very dry skin may need to layer an occlusive on top. It's ideal for those living in humid climates or anyone wanting a simplified skincare routine.

Immediate hydration is noticeable right after application. Within 1-2 weeks of consistent use, you should notice improved moisture retention and softer skin texture. For visible improvements in skin elasticity and firmness, expect to see results in 4-6 weeks. Long-term barrier health benefits become apparent after 8+ weeks of regular use.

As a 5-in-1 all-in-one product, it can be used directly after cleansing as your complete skincare step. If you prefer a multi-step routine, apply it after cleansing and any watery essences/serums, but before heavier occlusives or sunscreen. In the PM, you can use it as the last step or as a sleeping mask by applying a generous layer.

The comedogenic rating is 1/5, meaning it has a low likelihood of clogging pores. The formula is lightweight and absorbs well. However, individual reactions vary - some users have reported breakouts, particularly those with fungal acne or sensitivity to certain ingredients like silicones. We recommend patch testing if you have acne-prone skin.

The product has a PAO (Period After Opening) of 12 months. Once opened, use within one year for best results and safety. Since it comes in a jar, we recommend using a clean spatula rather than your fingers to scoop out product, which helps prevent contamination and extends the product's usable life.

— Skincarisma verdict
4.5 / 5 ★★★★★

Verdict: The Hada Labo Koi-Gokujyun Perfect Gel is an exceptional value for anyone seeking intense hydration in a simplified routine. Its 5-in-1 functionality, affordable price point, and thoughtful formulation with 4 types of hyaluronic acid make it a standout J-beauty product. Perfect for combination to sensitive skin types and safe for pregnancy. The main drawbacks are the jar packaging and potential issues for fungal acne sufferers. Overall, it delivers on its promise of creating bouncy, plump "mochi skin" and is a worthy addition to any hydration-focused skincare routine.

Product Overview

question
lightbulb What are Quick Product Notes?

Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.

muscle Pro Tip Alert!

Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.

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Quick Product Notes

Click on icons for more information
question
lightbulb What are Notable Effects & Ingredients?

Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.

We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.

muscle Pro Tip Alert!

Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.

Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you

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Notable Effects & Ingredients

anti-aging Anti-Aging from 3 ingredient(s):
Hydrolyzed Hyaluronic Acid Hydrolyzed Collagen Glucosyl Ceramide
brightening Brightening from 2 ingredient(s):
Glycerin Hydrolyzed Hyaluronic Acid
wound Promotes Wound Healing from 4 ingredient(s):
Glycerin Sodium Hyaluronate Arginine Hydrolyzed Hyaluronic Acid
question
lightbulb What are Ingredients Related to Skin Type?

Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.

We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.

muscle Pro Tip Alert!

A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.

One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!

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Ingredients Related to Skin Types

Click on icons for more information
dry-skin Dry Skin
3
oily-skin Oily/Acne-Prone Skin
sensitive-skin Sensitive Skin
question
lightbulb What is the Ingredient Safety Breakdown?

Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.

muscle Pro Tip Alert!

EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.

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Ingredient Safety Breakdown

EWG Health Ratings
Low risk
Medium risk
High risk
Unknown risk
62% 11% 25%

Product ingredient list

Showing first 5 of 27 ingredients
EWG CIR Ingredient Name & Cosmetic Functions Notes
1 Unknown
Water
Solvent, Skin Conditioning
1 A
Butylene Glycol
Solvent, Skin Conditioning, Masking, Fragrance, Humectant, Viscosity Controlling, Viscositydecreasing Agent
Hydrating
1 Unknown
Hydroxyethyl Urea
Humectant, Skin Conditioning, Hair Conditioning
Hydrating
2 A
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
brightening Brightening
Promotes Wound Healing
Hydrating
1 A
Pentylene Glycol
Solvent, Skin Conditioning
VIEW ALL INGREDIENTS