BIOCESS Spring Subun Ampoule — Main product view
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BIOCESS · Seoul, Korea

Spring Subun
Ampoule

HYALURON MAX 80+ — 5-Layer Deep Hydration Serum

80 ml / 2.7 fl. oz.

"Imagine your skin as a garden in early spring. Just as the earth awakens with fresh morning dew, SPRING SUBUN AMPOULE revitalizes your skin with nature's most powerful humectant: Hyaluronic Acid — a sophisticated blend of 5 molecular weights that work in harmony to hydrate every layer of your skin."

Intense Hydration

80%+ moisture boost — measurably higher than single-weight HA serums

Multi-Layer Absorption

5 molecular weights penetrate from the surface down to the deep dermis

24-Hour Hydration Lock

Sustained moisture-retention barrier that lasts through the day and night

Visible Plumping Effect

Reduces the appearance of fine lines with continued twice-daily use

Gentle for Sensitive Skin

Fragrance-free, clean formula with allantoin & centella to calm irritation

Notify Me at Launch Learn the Science
Launching on Amazon US — June 2025. Sign up to be first in line.
K-Beauty Certified Dermatologically Tested Clean Beauty Paraben-Free

The Technology

How It Works:
5-Layer Deep Hydration

Each molecular weight is scientifically calibrated to reach a specific skin layer. Together, they create a complete hydration system no single-weight serum can replicate.

Skin Cross-Section Absorption Model
5
Surface — Stratum Corneum

Acetyl Glucosamine-HA forms an instant dewy protective film

>1 MDa
Surface HA
4
Upper Epidermis

High-MW HA creates sustained moisture reservoir in upper skin layers

800kDa–1MDa
High-MW HA
3
Living Epidermis

Medium-MW HA strengthens the barrier and retains cell-level moisture

300–500kDa
Medium-MW HA
2
Epidermis–Dermis Junction

Low-MW hydrolyzed HA penetrates to plump fine lines from within

50–150kDa
Low-MW HA
1
Deep Dermis

Nano HA (~5kDa) reaches the deepest layer, boosting collagen synthesis

~5kDa
Nano HA
Read the Full Science

Application Guide

How to Use

The 2-minute ritual that transforms your skin's hydration — morning and evening.

1
🧴
Cleanse
Start with your regular cleanser. Pat face nearly dry — leave skin slightly damp for best HA absorption
2
💧
Dispense
Drop 3–4 drops of ampoule onto your fingertips or directly onto face
3
🖐️
Press & Pat
Gently press and pat the serum across your entire face and neck — do not rub
4
⏳
Absorb
Wait 60 seconds for the formula to fully absorb into all 5 skin layers
5
🌿
Seal with Moisturizer
Follow with your moisturizer to lock in all the hydration from the ampoule
Pro Tip

Apply on slightly damp skin — hyaluronic acid binds to water molecules. Having surface moisture present significantly boosts absorption and effectiveness.

Applying Spring Subun Ampoule

Usage Tips

Best Practices for Maximum Results

  • Use AM & PM for optimal 24-hour hydration coverage
  • Apply before SPF in the morning routine
  • Pairs exceptionally well with vitamin C serums and retinol
  • Layer under richer creams during harsh winter months
  • Safe for all skin types including sensitive and acne-prone

Full Transparency

Complete Ingredient List

We believe in full transparency. Every ingredient — its INCI name, Korean name, and function — disclosed openly.

KEY = Key Active HA = Hyaluronic Acid
Showing 50 of 50 ingredients
#
Ingredient (KR / INCI)
Function
Notes
1
Water
Aqua
Solvent / Base
2
Sodium Hyaluronate
Sodium Hyaluronate
Humectant / Hydration
HA KEY
3
Hydrolyzed Hyaluronic Acid
Hydrolyzed Hyaluronic Acid
Deep-penetrating humectant
HA KEY
4
Sodium Hyaluronate Crosspolymer
Sodium Hyaluronate Crosspolymer
Long-lasting moisture reservoir
HA KEY
5
Hyaluronic Acid
Hyaluronic Acid
Surface film-forming humectant
HA KEY
6
Acetyl Glucosamine
Acetyl Glucosamine
HA precursor / brightening
HA KEY
7
Niacinamide
Niacinamide
Brightening / Barrier support
KEY
8
Panthenol
Panthenol
Conditioning / Soothing (Pro-B5)
KEY
9
Allantoin
Allantoin
Cell renewal / Anti-irritant
KEY
10
Centella Asiatica Extract
Centella Asiatica Extract
Soothing / Healing / Anti-aging
KEY
11
Glycerin
Glycerin
Humectant / Moisture attraction
12
Betaine
Betaine
Humectant / Skin conditioning
13
Trehalose
Trehalose
Moisture retention / Protecting
14
1,2-Hexanediol
1,2-Hexanediol
Preservative / Solvent
15
Butylene Glycol
Butylene Glycol
Humectant / Texture enhancer
16
Dipropylene Glycol
Dipropylene Glycol
Solvent / Humectant
17
Propanediol
Propanediol
Natural-origin solvent / Moisturizer
18
Adenosine
Adenosine
Anti-wrinkle / Firming
19
Arginine
Arginine
pH adjuster / Skin conditioning
20
Carbomer
Carbomer
Thickener / Texture stabilizer
21
Xanthan Gum
Xanthan Gum
Natural thickener / Stabilizer
22
Hydroxyethylcellulose
Hydroxyethylcellulose
Film-former / Thickener
23
Disodium EDTA
Disodium EDTA
Chelating agent / Stability
24
Caprylyl Glycol
Caprylyl Glycol
Preservative booster / Emollient
25
Ethylhexylglycerin
Ethylhexylglycerin
Preservative / Skin conditioning

Ingredient list based on BIOCESS formulation document (260304-AMA1TK084). Full INCI list available upon request.

80ml
Generous bottle size
2–3 months
Of daily morning + evening use
2.7×
More than standard 30ml serums
5 types
of Hyaluronic Acid

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