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Master Serum

Master Serum

Product Description

Product overview

Made in South Korea K-BEAUTY

An ultra-minimal, hypoallergenic serum with only 8 carefully selected ingredients. Combines Centella Asiatica, Bifida Ferment, dual-weight Hyaluronic Acid, and Panthenol to deeply hydrate, soothe irritation, and strengthen a compromised skin barrier. Clinically tested with a skin irritation index of 0.00—perfect for sensitive and reactive skin types seeking gentle yet effective barrier repair.

Hypoallergenic (0.00 Irritation Index) Vegan & Cruelty-Free Fungal Acne Safe Fragrance-Free Minimal Formula (8 Ingredients) FSC Certified Ingredients Eco-Friendly Packaging
Pregnancy
Yes
Fungal Acne
Yes
Comedogenic
0/5
Size
60ml / 30ml
Type
Serum
Formula
Vegan
Ingredients
8 Only
Target
Barrier Repair
Real reviews · YouTube Shorts
Why it's different

Ultra-Minimal Formula

Only 8 carefully selected ingredients—no fillers, no irritants. Each ingredient serves a purpose for barrier repair and hydration.

01

Texture & feel

SENSORY
Consistency
Watery Essence
Scent
Fragrance-Free
Absorption
Fast (15-30 sec)
Finish
Dewy Glass Skin

Ultra-Minimal Formula

Only 8 carefully selected ingredients—no fillers, no irritants. Each ingredient serves a purpose for barrier repair and hydration.

Centella Asiatica Soothing

Contains Centella Asiatica Extract rich in madecassoside and asiaticoside to calm inflammation and repair damaged skin.

Bifida Ferment Extract

Probiotic-derived ingredient that strengthens the skin's microbiome, enhances barrier function, and improves resilience.

Dual Hyaluronic Acid

Contains both Sodium Hyaluronate and Hydrolyzed HA for multi-layer hydration from the surface to deeper skin layers.

02

Safety & compatibility

SAFE
Pregnancy & Breastfeeding Safe

Clinically tested and hypoallergenic. Free of retinoids, salicylic acid, hydroquinone, and all ingredients of concern during pregnancy.

Fungal Acne (Malassezia) Safe

Contains no ferments that feed malassezia, no fatty acids, esters, or polysorbates. Verified FA-safe by multiple ingredient analyzers.

Non-Comedogenic (Rating: 0/5)

Oil-free formula with no pore-clogging ingredients. All ingredients score 0 on the comedogenic scale.

Hypoallergenic Tested

Achieved a skin irritation index of 0.00 in clinical testing. Free of common allergens, fragrances, and essential oils.

Compatible with Active Ingredients

Safe to use with retinol, vitamin C, AHAs, BHAs, and niacinamide. Great for buffering and soothing after actives.

Reef Safe & Eco-Friendly

Formulated without oxybenzone or octinoxate. Packaged in FSC-certified, eco-friendly materials.

03

Ingredient breakdown

INGREDIENTS

Centella Asiatica ExtractProven

Also known as "Cica" or "Tiger Grass," this powerful plant extract contains four key active compounds (asiaticoside, madecassoside, asiatic acid, madecassic acid) that work synergistically to calm inflammation, accelerate wound healing, and stimulate collagen synthesis.

  • Anti-inflammatory: Reduces redness, irritation, and skin sensitivity
  • Wound Healing: Stimulates collagen production and speeds recovery
  • Barrier Support: Strengthens skin's protective function
Star ingredient for sensitive, reactive, and post-procedure skin.

Bifida Ferment ExtractProven

A probiotic-derived ingredient created by fermenting Bifida bacteria. This process breaks down nutrients into smaller particles for better absorption while providing benefits for the skin's microbiome and barrier function.

  • Microbiome Support: Helps maintain healthy skin flora
  • Barrier Strengthening: Reinforces skin's protective barrier
  • Enhanced Absorption: Fermentation creates smaller molecules for deeper penetration

Sodium Hyaluronate + Hydrolyzed Hyaluronic AcidProven

A dual-weight hyaluronic acid system. Sodium Hyaluronate (high molecular weight) forms a moisture-retaining film on the surface, while Hydrolyzed HA (low molecular weight) penetrates deeper for multi-layer hydration.

  • Surface Hydration: High MW HA holds up to 1000x its weight in water
  • Deep Hydration: Low MW HA penetrates to plump from within
  • Barrier Support: Helps prevent transepidermal water loss (TEWL)

Panthenol (Vitamin B5) HumectantProven

A provitamin that converts to pantothenic acid in the skin. Known for its exceptional moisturizing, soothing, and wound-healing properties. Often used in medical-grade wound care products.

  • Deep Moisturization: Penetrates skin layers for lasting hydration
  • Soothing: Calms irritation and reduces redness
  • Healing: Supports skin's natural repair processes

8 ingredients

Water/Aqua, Butylene Glycol, Centella Asiatica Extract, Bifida Ferment Extract, Glycerin, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Panthenol

FREE FROM: Fragrance, Essential Oils, Parabens, Sulfates, Silicones, Mineral Oil, Artificial Colors, Alcohol (Denat.), PEGs, Formaldehyde Releasers
04

Where it fits in your routine

ROUTINE
1
Cleanser
2
Toner
3
Essence
4
Master Serum
5
Moisturizer
6
Sunscreen (AM)

Apply after toner/essence and before heavier treatments. Can be used AM & PM. Mix 1:1 with other products when skin is troubled.

05

How to use

HOW TO USE
1

Cleanse & Prep

Start with clean skin. Apply your toner or essence first to prepare skin for better absorption.

2

Dispense & Apply

Take 2-3 drops of serum onto fingertips. Gently spread across face and neck, avoiding direct eye contact.

3

Pat to Absorb

Using light pressing motions, pat the serum into skin until fully absorbed. No rubbing necessary.

4

Layer & Seal

Follow with moisturizer to lock in hydration. Use sunscreen in the morning for protection.

06

Who is it for?

WHO

Perfect for you if:

  • Your skin barrier is damaged or compromised
  • You have sensitive or reactive skin
  • You prefer minimal, clean formulas
  • You're pregnant or breastfeeding
  • You have fungal acne or clog-prone skin
  • Your skin needs soothing after active ingredients
  • You want a gentle "recovery" serum

Consider alternatives if:

  • You want anti-aging actives like retinol or peptides
  • You need brightening ingredients (niacinamide, vitamin C)
  • You prefer rich, creamy textures
  • You want visible immediate results
  • You're looking for exfoliation (AHA/BHA)
07

Skin type compatibility

SKIN TYPES
Oily Skin
Excellent

Lightweight, watery texture absorbs instantly without adding shine or greasiness. Oil-free formula won't contribute to congestion.

Dry Skin
Good

Provides excellent hydration boost but may need a richer moisturizer on top for very dry skin types.

Combination Skin
Excellent

Balances well across different face zones. Hydrates dry areas without overwhelming oily zones.

Sensitive Skin
Excellent

Specifically designed for sensitive skin. Hypoallergenic, fragrance-free formula with 0.00 irritation index.

Acne-Prone Skin
Excellent

Non-comedogenic (0/5), fungal acne safe, oil-free. Won't clog pores or worsen breakouts. Soothes post-acne irritation.

08

Results timeline

MONTH 2+
Day 1-3

Immediate Hydration & Comfort

Skin feels instantly hydrated and comfortable. Tight, dry sensations disappear. Some users notice a subtle dewy glow immediately.

90% noticed improved hydration
Week 1-2

Reduced Irritation & Redness

Calming effects become noticeable. Redness and sensitivity start to decrease. Skin feels less reactive to other products and environmental factors.

78% reported less redness
Week 3-4

Barrier Repair & Resilience

Skin barrier strengthens noticeably. Better tolerance to active ingredients. Improved moisture retention throughout the day.

85% felt stronger skin barrier
Month 2+

Healthy, Balanced Complexion

Consistently healthy-looking skin. Improved overall texture and tone. Skin maintains hydration better and recovers faster from stress.

82% reported healthier skin overall
09

Ratings by platform

1K+ REVIEWS
Amazon
4.5
Rating
800+
Bought/Month
Main complaint: Some find it too lightweight for very dry climates
iHerb
4.7
Rating
500+
Reviews
Main complaint: Wish the brand used glass packaging instead of plastic
YesStyle
4.6
Rating
300+
Reviews
Main complaint: May feel slightly oily on some skin types
Olive Young
4.8
Rating
200+
Reviews
Main complaint: Would prefer more product options in the Master line
10

Pros & cons

BALANCED

Praised

  • Ultra-minimal 8-ingredient formula
  • Clinically proven hypoallergenic (0.00 irritation)
  • Perfect for damaged or compromised barriers
  • Fungal acne and pregnancy safe
  • Lightweight, non-greasy absorption
  • Doesn't sting on irritated skin
  • Versatile—works alone or mixed with other products
  • Eco-friendly, FSC-certified packaging

Criticized

  • May feel too lightweight for very dry skin
  • No active anti-aging or brightening ingredients
  • Results are gradual, not immediate
  • Plastic packaging (not glass)
  • Price per ml higher than some competitors
  • Limited availability in some regions
11

Budget-friendly alternatives (dupes)

DUPES
85% Match
Madagascar Centella Ampoule
$11-16
Budget Pick

Even simpler formula (7 ingredients) with 100% Madagascar-sourced Centella. Very similar soothing and barrier repair benefits. More watery texture, lacks the Bifida ferment.

75% Match
Soondy Centella Asiatica Essence
$18-22
Same Brand

100% pure Centella Asiatica essence from the same brand. More focused on calming benefits, lacks the dual HA and Bifida probiotic complex.

70% Match
Wonder Releaf Centella Serum Unscented
$18-21
Feature-Rich

More complex formula with 34,860ppm Centella, peptides, niacinamide, and ceramides. Better for anti-aging but more ingredients means more potential for sensitivity.

12

Comparison with competitors

SIDE-BY-SIDE
Madagascar Centella Ampoule
Key Ingredients Centella Only
Total Ingredients 7 (Minimal)
Size 55ml / 100ml
Fungal Acne Safe Yes
Pregnancy Safe Yes
Best For Budget Barrier Repair
Wonder Releaf Centella Serum
Key Ingredients Centella + Peptides + Niacinamide
Total Ingredients 25+
Size 60ml
Fungal Acne Safe No
Pregnancy Safe Yes
Best For Anti-Aging + Soothing
Advanced Snail 96 Mucin Power Essence
Key Ingredients 96% Snail Mucin
Total Ingredients 10
Size 100ml
Fungal Acne Safe No
Pregnancy Safe Yes
Best For Hydration + Repair
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. Room temperature is fine; refrigeration optional for a cooling effect.

Packaging

Eco-friendly plastic bottle with pump dispenser. FSC-certified materials.

Travel Friendly

Yes, 60ml is under 100ml carry-on limit. 30ml size also available for travel.

13

Frequently asked questions

FAQ

Yes, Mixsoon Master Serum is safe for use during pregnancy and breastfeeding. The formula contains no retinoids, salicylic acid, hydroquinone, or any other ingredients of concern. It has been clinically tested and achieved a skin irritation index of 0.00, making it one of the gentlest serums available. Stylevana notes it's been tested for heavy metals and pesticide residues as well.

Yes, this serum is fungal acne safe. It contains no fatty acids, oils, esters, or polysorbates that can feed malassezia yeast. The Bifida Ferment Extract in this formula is different from fermented extracts that trigger FA—it doesn't contain the fermentation byproducts that feed the fungus. Verified by multiple ingredient analyzers including SkinSort.

Yes! This serum is excellent for use alongside active ingredients. Its soothing, minimal formula makes it perfect for calming skin irritation from actives. Apply the Master Serum after your active treatments to help buffer and soothe. For sensitive skin, you can also mix it 1:1 with other products to reduce potential irritation.

This serum excels for sensitive, reactive, and compromised skin types. It's especially beneficial for those with damaged skin barriers, post-procedure skin, or anyone experiencing irritation. The lightweight formula also works well for oily and combination skin types. Very dry skin types may need to layer a richer moisturizer on top.

Most users notice immediate hydration and comfort from the first use. Reduction in redness and irritation typically occurs within 1-2 weeks of consistent use. Significant barrier repair and improved skin resilience usually develop over 3-4 weeks. For best results, use consistently both morning and evening.

Apply after cleansing, toner, and essence, but before heavier serums and moisturizers. The typical order is: Cleanser → Toner → Essence → Master Serum → Treatment Serums → Moisturizer → Sunscreen (AM). It can also be used as a "mixing serum" by combining it 1:1 with other products.

No, this serum has a comedogenic rating of 0/5. It's completely oil-free and contains no ingredients known to clog pores. All 8 ingredients are non-comedogenic, making it safe for acne-prone and congestion-prone skin. The lightweight, watery texture absorbs fully without leaving any pore-clogging residue.

The Period After Opening (PAO) is 12 months. Once opened, the serum should be used within one year for optimal efficacy and safety. Store in a cool, dry place away from direct sunlight. The pump dispenser helps minimize contamination and oxidation compared to jar packaging.

— Skincarisma verdict
4.6 / 5 ★★★★★

Verdict: Mixsoon Master Serum is an exceptional choice for anyone with sensitive, reactive, or compromised skin seeking a gentle yet effective barrier repair solution. Its ultra-minimal 8-ingredient formula sets it apart in a market saturated with complex formulations. The combination of Centella Asiatica, Bifida Ferment, and dual-weight Hyaluronic Acid delivers proven soothing and hydrating benefits without unnecessary fillers. While it may be too lightweight for those seeking rich anti-aging treatments, for its target audience—sensitive skin sufferers, pregnant individuals, and fungal acne warriors—this serum is a near-perfect addition to any routine. The slightly higher price point is justified by the clinical testing, FSC certification, and exceptional safety profile.

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.

Awesome, I Understand!

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

Awesome, I Understand!

Notable Effects & Ingredients

anti-aging Anti-Aging from 2 ingredient(s):
Centella Asiatica Extract Hydrolyzed Hyaluronic Acid
brightening Brightening from 2 ingredient(s):
Glycerin Hydrolyzed Hyaluronic Acid
wound Promotes Wound Healing from 5 ingredient(s):
Centella Asiatica Extract Glycerin Sodium Hyaluronate Hydrolyzed Hyaluronic Acid Panthenol
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!

Awesome, I Understand!

Ingredients Related to Skin Types

Click on icons for more information
dry-skin Dry Skin
4
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.

Awesome, I Understand!

Ingredient Safety Breakdown

EWG Health Ratings
Low risk
Medium risk
High risk
Unknown risk
75% 25%

Product ingredient list

Showing first 5 of 8 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 B
Centella Asiatica Extract
Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic
anti-aging Anti-Aging
Promotes Wound Healing
Redness
Irritation
0 Unknown
Bifida Ferment Extract
Humectant, 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
VIEW ALL INGREDIENTS