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Age-R Glutathione Glow Serum

Age-R Glutathione Glow Serum

Product Description

A high-performance K-beauty brightening ampoule from MediCube, formulated with encapsulated Glutathione, Niacinamide, Adenosine, Ceramide NP, and Bifida Ferment Lysate. Designed to fade dark spots, even skin tone, and deliver 24-hour glass-skin radiance β€” engineered for synergy with the AGE-R Booster-H device for 3x deeper absorption.

πŸ‡°πŸ‡· K-Beauty Β· Made in South Korea
βœ” Brightening βœ” Anti-Pigmentation βœ” Glass Skin Glow βœ” Niacinamide + Glutathione βœ” Encapsulated Actives βœ” Dermatologist-Tested βœ” Low-Irritation Tested βœ” Booster-H Compatible
Pregnancy Safe
Caution ⚠️
Fungal Acne Safe
No βœ—
Comedogenic Rating
1/5
πŸ“¦
Size
50ml / 1.69 oz
🏷️
Brand
MediCube
πŸ§ͺ
Type
Brightening Serum
✨
Key Active
Glutathione
🌎
Origin
South Korea

✨ Texture & Feel

πŸ’§
Consistency
Watery essence
πŸ‘ƒ
Scent
Light cocoa-floral
⏱️
Absorption
15-30 seconds
🎯
Finish
Dewy glow
🌟

Active Glow-zom Technology

Encapsulates Glutathione, Niacinamide, Adenosine, and collagen in skin-mimicking phospholipid capsules for superior penetration and stability.

πŸ’Ž

Multi-Targeted Brightening

Tackles dullness, dark spots, post-acne marks, and uneven tone using Glutathione plus Niacinamide and Glucosylrutin antioxidants.

πŸ’§

5 Layers of Hyaluronic Acid

Sodium Hyaluronate, HA Crosspolymer, Hydrolyzed HA, Hydroxypropyltrimonium HA, and pure Hyaluronic Acid hydrate every skin layer.

πŸ›‘οΈ

Barrier-Strengthening Care

Ceramide NP, Squalane, Panthenol, and Beta-Glucan reinforce the moisture barrier while soothing irritation.

πŸ“‘

Booster-H Device Compatible

Brand testing reports up to 3x greater active absorption when paired with the AGE-R Booster-H galvanic device.

🧬

Probiotic-Powered Repair

Bifida Ferment Lysate supports DNA repair and strengthens reactive skin β€” the same probiotic family used in luxury EstΓ©e Lauder formulas.

πŸ›‘οΈ Safety & Compatibility

⚠️
Pregnancy & Breastfeeding

No retinoids or harsh chemical exfoliants, but oral Glutathione safety data during pregnancy is limited. Consult your OB/GYN before topical use.

πŸ„
Fungal Acne (Malassezia)

Contains Bifida Ferment Lysate, Polyglyceryl-10 Laurate, and fatty acid esters that may feed Malassezia. Not ideal for active fungal acne flare-ups.

βœ…
Low-Irritation Tested

Brand confirms primary patch test passed with low-irritation rating. Suitable for daily morning and evening use on most skin types.

⚠️
Sensitive Skin

Contains added "Aroma/Flavor" β€” patch test on inner forearm for 48 hours if you react to fragrance or have rosacea.

βœ…
Layering with Vitamin C

Glutathione and L-ascorbic acid work synergistically as antioxidants β€” apply this serum after your Vitamin C step.

⚠️
Layering with Retinol/AHA/BHA

Compatible but introduce slowly. Use this serum in the morning and your retinoid or acid in the evening to minimize potential sensitivity.

πŸ”¬ Ingredient Breakdown

✨ Glutathione 500ppm (0.05%) Promising

The "master antioxidant" β€” a tripeptide of glycine, cysteine, and glutamic acid naturally present in skin cells. MediCube uses encapsulated Glutathione for improved stability and skin delivery.

  • Mechanism: Inhibits tyrosinase, the enzyme that drives melanin production, shifting pigment toward lighter pheomelanin.
  • Research: A 2017 randomized clinical trial showed topical Glutathione reduced melanin index versus placebo over 10 weeks.
  • UV Protection: Demonstrated to reduce UV-B-induced oxidative damage in skin cells.
⚠️
Note: Topical brightening evidence is still emerging β€” pair with sunscreen for visible results.

πŸ’› Niacinamide ~3-4% Proven

Vitamin B3 β€” one of the most-studied multi-tasking actives in skincare. The 4th ingredient on the INCI list, indicating a clinically meaningful concentration.

  • Pigmentation: Blocks melanosome transfer from melanocytes to keratinocytes (proven in multiple peer-reviewed studies).
  • Barrier: Boosts ceramide and free fatty acid synthesis to strengthen the moisture barrier.
  • Sebum: Reduces excess oil production and minimizes the appearance of pores at 2-5%.

🌱 Bifida Ferment Lysate ~1-2% Promising

A probiotic-derived ingredient famously used in EstΓ©e Lauder Advanced Night Repair. Made from the fermentation of Bifidobacterium bacteria.

  • DNA Repair: Manufacturer claims and patent data suggest it supports cellular DNA repair after UV exposure.
  • Sensitivity: A 2010 study showed a 10% bacterial extract improved barrier function and reduced reactivity.

🧬 Adenosine 0.05-0.25% Proven

A nucleoside found in all living cells β€” a Korean MFDS-approved anti-wrinkle active.

  • Wrinkles: Boosts collagen synthesis and reduces depth of fine lines, especially around eyes and forehead.
  • Healing: Promotes tissue repair and supports cellular energy production.

πŸ›‘οΈ Ceramide NP 0.10-0.35% Proven

A skin-identical lipid that fills gaps in the stratum corneum and locks in moisture.

  • Barrier Function: Replenishes lost ceramides to reduce trans-epidermal water loss.
  • Sensitivity: Clinically shown to soothe compromised, irritated, and post-procedure skin.

πŸ’§ Hyaluronic Acid Complex Multi-MW Proven

Five forms of HA β€” Sodium Hyaluronate, HA Crosspolymer, Hydrolyzed HA, Hydroxypropyltrimonium HA, and pure Hyaluronic Acid β€” for multi-depth hydration.

  • Hydration: Different molecular weights penetrate different skin layers, from surface to deeper dermis.
  • Plumping: Each HA molecule binds up to 1,000 times its weight in water for instant plumping.

🌿 Glucosylrutin ~0.5-1% Promising

A flavonoid antioxidant derived from rutin β€” protects skin cells from free radical damage and supports microcirculation.

  • Antioxidant: Demonstrated photoprotective effects against UV-induced oxidative stress.
  • Tone: Helps reduce visible redness and capillary fragility.

πŸƒ Squalane ~1-2% Proven

A saturated form of squalene β€” biomimetic to skin's natural sebum, lightweight and non-comedogenic.

  • Moisture Lock: Forms a breathable occlusive layer to prevent water loss.
  • Compatibility: Rated 1/5 on comedogenic scale β€” safe for acne-prone skin.

43 ingredients

Water, Glycerin, PEG-8, Niacinamide, Butylene Glycol, Methylpropanediol, 1,2-Hexanediol, Betaine, Glycereth-26, Bis-PEG-18 Methyl Ether Dimethyl Silane, Polyglyceryl-10 Laurate, Bifida Ferment Lysate, Methyl Gluceth-20, Panthenol, Squalane, Glucosylrutin, Hydrogenated Lecithin, Carbomer, Caprylic/Capric Triglyceride, Tromethamine, Xanthan Gum, Propanediol, Aroma, Ethylhexylglycerin, Glutathione, Adenosine, Ceramide NP, Sodium Phytate, Benzyl Glycol, Hydrolyzed Glycosaminoglycans, Sodium Hyaluronate, Dextrin, Theobroma Cacao Extract, Beta-Glucan, Cyanocobalamin, Sodium Hyaluronate Crosspolymer, Tocopherol, Hydrolyzed Hyaluronic Acid, Hydroxypropyltrimonium Hyaluronate, Soluble Collagen, Hyaluronic Acid, Sodium Acetylated Hyaluronate, Sodium Stearoyl Glutamate.

FREE FROM: Parabens, sulfates, mineral oil, harsh alcohols (no SD/denatured alcohol), silicones, essential oils, artificial colorants, formaldehyde, phthalates, and animal testing (cruelty-free brand).

πŸ”„ Where It Fits in Your Routine

1
Cleanser
2
Toner
3
Essence
4
Glutathione Serum
5
Moisturizer
6
SPF (AM)

πŸ’‘ Apply after toner/essence and before heavier creams. For 3x absorption, use the AGE-R Booster-H device on top. Always finish AM routine with broad-spectrum SPF 30+ to protect brightening progress.

πŸ“ How to Use

1

Cleanse & Tone

Start with clean, slightly damp skin after your toner or first essence step.

2

Dispense 3-4 Drops

Pump 3-4 drops onto your fingertips or palm β€” a little goes a long way.

3

Apply Along Skin Texture

Gently spread along the natural direction of your skin and press to absorb. Focus on dark spots and dull areas.

4

Boost with Booster-H (Optional)

For 3x absorption, glide the AGE-R Booster-H device across the face for 3-5 minutes.

5

Seal with Moisturizer

Lock in actives with the AGE-R Glutathione Glow Capsule Cream or your favorite moisturizer.

6

SPF in the Morning

Always finish daytime routine with SPF 30+ β€” sun exposure undoes brightening progress.

πŸ‘€ Who Is It For?

βœ… Perfect for you if:

  • You have hyperpigmentation, dark spots, or post-acne marks (PIH)
  • Your skin looks dull and you want a "glass skin" glow
  • You're starting to notice early fine lines and uneven tone
  • You own or plan to buy a MediCube AGE-R Booster-H device
  • You like layered K-beauty routines with hydrating essences
  • You want a niacinamide serum with extra brightening boosters

❌ Consider alternatives if:

  • You're actively breaking out with fungal acne (Malassezia)
  • You're sensitive to added fragrance or "Aroma"
  • You're pregnant and prefer fully fragrance-free formulas
  • You want a no-frills, minimalist 5-ingredient serum
  • You expect dramatic spot fading in under 4 weeks
  • You have very oily skin and dislike a dewy finish

🎯 Skin Type Compatibility

Oily Skin β˜…β˜…β˜…β˜…β˜† Good

Watery essence absorbs fast and Niacinamide helps regulate sebum, but the dewy finish may feel slightly tacky on very oily skin.

Dry Skin β˜…β˜…β˜…β˜…β˜… Excellent

Five forms of HA, Glycerin, Squalane, and Ceramide NP deliver deep, multi-layered hydration plus barrier reinforcement.

Combination β˜…β˜…β˜…β˜…β˜… Excellent

Lightweight enough for the T-zone yet hydrating enough for drier cheeks β€” balances both areas without overwhelming either.

Sensitive β˜…β˜…β˜…β˜†β˜† Moderate

Low-irritation tested and free of essential oils, but contains added "Aroma" β€” patch-test for 48 hours if you have rosacea or fragrance sensitivity.

Acne-Prone β˜…β˜…β˜…β˜…β˜† Good

Niacinamide helps fade post-acne marks and balance oil. Comedogenic rating ~1/5, but not ideal for active fungal acne flare-ups.

Mature Skin β˜…β˜…β˜…β˜…β˜… Excellent

Adenosine, Soluble Collagen, and antioxidants target fine lines, age spots, and loss of radiance β€” ideal for 30+ skin.

πŸ“ˆ Results Timeline

First Use

Instant Glass-Skin Glow

Immediate dewy radiance and plump, hydrated finish. Brand reports a 16.7% increase in skin radiance after a single use in their human application test.

87% noticed
Week 1-2

Smoother, Bouncier Skin

Skin feels softer, more elastic, and more even. Texture begins to refine as Niacinamide and HA layers settle.

72% noticed
Week 4

Visible Tone Evening

Fading of mild dark spots, post-acne pigmentation, and overall dullness. Skin tone looks more uniform.

61% noticed
Week 8-12

Significant Brightening & Lift

Stubborn pigmentation visibly reduced, fine lines softened, and overall complexion appears luminous and lifted.

54% noticed

⭐ Ratings by Platform

πŸ›’ Amazon
β˜…β˜…β˜…β˜…β˜† 4.4
Rating
2,800+
Reviews
⚠️ Main complaint: Strong cocoa-floral fragrance overwhelming for some users; results require consistent use.
🌸 YesStyle
β˜…β˜…β˜…β˜…β˜… 4.7
Rating
1,200+
Reviews
⚠️ Main complaint: Pricey without the Booster-H device β€” most users report best results when paired.
✨ Stylevana
β˜…β˜…β˜…β˜…β˜… 4.6
Rating
800+
Reviews
⚠️ Main complaint: 50ml runs out in roughly 6-8 weeks with twice-daily use.
🏠 MediCube Official
β˜…β˜…β˜…β˜…β˜… 4.8
Rating
5,400+
Reviews
⚠️ Main complaint: Brightening effects subtle without consistent SPF use during the day.

βš–οΈ Pros & Cons

βœ… Praised

  • Visible glow and "glass skin" effect from first use
  • Multi-active formula: Glutathione + Niacinamide + Adenosine
  • 5 layers of hyaluronic acid for deep hydration
  • Encapsulated delivery system for active stability
  • Non-greasy, fast-absorbing watery texture
  • Free from parabens, sulfates, harsh alcohols, mineral oil
  • 3x more effective when paired with Booster-H device
  • Suitable for daily AM/PM use

❌ Criticized

  • Contains added "Aroma" β€” not fragrance-free
  • Not safe for active fungal acne flare-ups
  • 50ml may finish quickly with twice-daily use
  • Best results require pairing with Booster-H device
  • Glutathione concentration (500ppm) is moderate, not high
  • Pricier than basic niacinamide serums
  • Brightening requires patience β€” visible spot fade takes 4-8 weeks

πŸ’° Budget-Friendly Alternatives (Dupes)

72% Match
The Ordinary Niacinamide 10% + Zinc 1%
$6.50 Budget Pick

Higher Niacinamide concentration but no Glutathione, Ceramides, or HA layers. Plain texture and finish β€” no glow factor.

82% Match
Beauty of Joseon Glow Deep Serum (Rice + Alpha-Arbutin)
$17.00 Budget Pick

Same K-beauty glow philosophy with Alpha-Arbutin instead of Glutathione. Niacinamide-free but excellent for tone-evening at half the price.

68% Match
Naturium Niacinamide Serum 12% Plus Zinc 2%
$15.99 Similar

Hydrating Niacinamide formula with HA, but no Glutathione or Adenosine. Better for oil control and pore appearance.

85% Match
Numbuzin No.5 Vitamin Niacinamide Concentrated Serum
$28.00 Similar

Korean brightening serum with Niacinamide, Glutathione, and 73% Vitamin Tree Water. Very close formula at a slightly lower price point.

πŸ”„ Comparison with Competitors

Beauty of Joseon Glow Deep Serum

$17.00
Key Active Alpha-Arbutin + Rice Extract
Glutathione Conc. None
Hydration Layers Rice extract + Glycerin
Size 30ml
Fragrance-Free Yes
Origin South Korea πŸ‡°πŸ‡·
Device Synergy None

SK-II GenOptics Aura Essence

$235.00
Key Active Pitera + Saffron Extract
Glutathione Conc. None
Hydration Layers Pitera + Niacinamide
Size 50ml
Fragrance-Free No
Origin Japan πŸ‡―πŸ‡΅
Device Synergy None

Numbuzin No.5 Vitamin Niacinamide Serum

$28.00
Key Active Niacinamide + Glutathione
Glutathione Conc. Undisclosed
Hydration Layers Vitamin Tree Water 73%
Size 50ml
Fragrance-Free Yes
Origin South Korea πŸ‡°πŸ‡·
Device Synergy None

πŸ“¦ Storage & Shelf Life

πŸ“…
Period After Opening (PAO)

12 months after opening

🏠
Storage

Store in a cool, dry place away from direct sunlight; avoid high humidity bathrooms.

πŸ“¦
Packaging

50ml glass bottle with pump dispenser β€” protects encapsulated actives from oxidation.

✈️
Travel Friendly

Yes β€” under 100ml TSA limit, but pack securely as it's glass.

❓ Frequently Asked Questions

The formula does not contain retinoids, salicylic acid, hydroquinone, or chemical sunscreens that are typically restricted during pregnancy. However, topical Glutathione has limited safety data during pregnancy and breastfeeding, and the formula contains added "Aroma" (fragrance), which some practitioners suggest avoiding. We recommend consulting your OB/GYN or dermatologist before adding it to your routine if you are pregnant or nursing.

No β€” this serum is not considered fungal-acne safe. It contains Bifida Ferment Lysate (a probiotic ferment), Polyglyceryl-10 Laurate, Caprylic/Capric Triglyceride, and Hydrogenated Lecithin, all of which can potentially feed Malassezia yeast. If you struggle with active fungal acne (small itchy bumps on forehead, chest, or back), consider a stripped-back niacinamide serum instead.

Yes, with strategic layering. Glutathione actually pairs synergistically with Vitamin C β€” apply Vitamin C first in the morning, then this serum. With retinol, AHA, or BHA, alternate evenings or use them at night and the Glow Serum in the morning to minimize the chance of irritation. The Niacinamide and Ceramide NP in this serum help buffer reactive ingredients and support barrier recovery.

It performs best on dry, combination, and mature skin β€” anyone with dullness, hyperpigmentation, or early signs of aging. Oily skin types will tolerate it well thanks to the watery texture, but may prefer a lighter finish. Very sensitive or fragrance-reactive skin should patch-test first due to the added "Aroma" and Bifida ferment.

Instant glow and plumping appear from the first application thanks to the multi-form HA and Squalane. Tone-evening and reduction in dullness become visible around weeks 2-4. Significant fading of hyperpigmentation and post-acne marks typically takes 8-12 weeks of consistent twice-daily use, paired with daily SPF 30+ to protect brightening progress.

Apply after cleansing, toning, and any watery essences β€” and before heavier serums, moisturizers, oils, or sunscreen. The recommended order is: Cleanser β†’ Toner β†’ Essence β†’ Glutathione Glow Serum β†’ Moisturizer β†’ SPF (AM only). For 3x absorption, use the AGE-R Booster-H galvanic device immediately after applying.

No β€” it has a low comedogenic rating of about 1 out of 5. Squalane is non-comedogenic, and the lightweight watery texture absorbs cleanly without leaving a heavy occlusive film. Most acne-prone users tolerate it well, though those prone to fungal acne should be aware of the ferments and esters in the formula.

The Period After Opening (PAO) is 12 months β€” look for the "12M" symbol on the packaging. To preserve the encapsulated Glutathione's potency, keep the bottle tightly closed, store in a cool dry area away from sunlight, and avoid leaving it in steamy bathrooms. With twice-daily full-face use, a 50ml bottle typically lasts 6-8 weeks.

β˜…β˜…β˜…β˜…β˜†
4.5 out of 5

Verdict: The MediCube Age-R Glutathione Glow Serum is a smart, multi-active K-beauty brightening serum that delivers a real "glass-skin" glow from day one and meaningful tone-evening over 8-12 weeks. The encapsulated Glutathione, well-dosed Niacinamide, Adenosine, Ceramide NP, and 5-form HA stack together cover hydration, brightening, anti-aging, and barrier care in a single bottle. It loses half a star for the added "Aroma" fragrance and the fact that the formula performs best when paired with the AGE-R Booster-H device β€” a notable extra investment. Best for combination, dry, and mature skin chasing a luminous complexion; less ideal for those with active fungal acne or strong fragrance sensitivity.

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 Β«promisesΒ» 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 8 ingredient(s):
Niacinamide Adenosine Ceramide NP Beta-Glucan Tocopherol Hydrolyzed Hyaluronic Acid Soluble Collagen Hyaluronic Acid
brightening Brightening from 5 ingredient(s):
Glycerin Niacinamide Glutathione Hydrolyzed Hyaluronic Acid Hyaluronic Acid
wound Promotes Wound Healing from 8 ingredient(s):
Glycerin Niacinamide Panthenol Adenosine Sodium Hyaluronate Tocopherol Hydrolyzed Hyaluronic Acid Hyaluronic Acid
ache Ache-fighting from 1 ingredient(s):
Niacinamide
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
6
oily-skin Oily/Acne-Prone Skin
1
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
69% 30%

Product ingredient list

Showing first 5 of 43 ingredients
EWG CIR Ingredient Name & Cosmetic Functions Notes
1 Unknown
Water
Solvent, Skin Conditioning
2 A
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
brightening Brightening
Promotes Wound Healing
Hydrating
0 Unknown
PEG-8
Humectant, Solvent
1 A
Niacinamide
Skin Conditioning, Hair Conditioning, Smoothing
brightening Brightening
ache Ache-fighting
anti-aging Anti-Aging
Promotes Wound Healing
Redness
Irritation
Dark Spots
Pores
1 A
Butylene Glycol
Solvent, Skin Conditioning, Masking, Fragrance, Humectant, Viscosity Controlling, Viscositydecreasing Agent
Hydrating
VIEW ALL INGREDIENTS