Moisture Serum
Moisture Serum
Product Description
Product overview
A lightweight emulsion-type serum formulated with Astragalus Membranaceus Root Extract and olive oil to restore optimal moisture-oil balance. Developed by Pyunkang Oriental Medicine Clinic, this minimalist 15-ingredient formula calms, hydrates, and nourishes dehydrated, sensitive, and combination skin for a balanced, radiant complexion.
Oil-Moisture Balance
Formulated with optimal oil ratio using olive oil and oriental herbs to restore skin's natural balance for oily yet dehydrated skin.
Texture & feel
SENSORYOil-Moisture Balance
Formulated with optimal oil ratio using olive oil and oriental herbs to restore skin's natural balance for oily yet dehydrated skin.
Traditional Oriental Medicine
Developed by Pyunkang Korean Medicine Hospital with 50+ years of expertise treating atopic skin disorders.
Minimalist Formula
Only 15 essential ingredients - no unnecessary chemicals, fragrances, or artificial colors for maximum gentleness.
Clinically Tested
Zero-irritation tested by Korea Dermatology Research Institute and certified by European CPNP standards.
Safety & compatibility
SAFEFree from retinoids, salicylic acid, hydroquinone, and chemical sunscreens. All ingredients are considered safe for external use during pregnancy.
Contains Polysorbate 60, Sorbitan Sesquioleate, and olive oil which may feed malassezia yeast. Avoid if you have active fungal acne.
Rating of 2/5 due to olive oil. Generally safe for most skin types but may clog pores for highly acne-prone individuals.
Zero-irritation tested, fragrance-free, and all ingredients rated EWG Green (low hazard). Safe for reactive and sensitive skin.
Ingredient breakdown
INGREDIENTSAstragalus Membranaceus Root Extract 1st ingredientProven
Also known as "Huangqi" in Traditional Chinese Medicine, this adaptogenic herb has been used for centuries for its skin-rejuvenating properties. Used here instead of purified water as the base, providing concentrated benefits.
- Anti-Aging: Studies show 2% concentration increases skin hydration, firmness, and smoothness by 20% after 14 days
- Antioxidant: Rich in polysaccharides, flavonoids, and saponins that protect against free radicals
- Anti-Inflammatory: Helps calm irritated and sensitized skin
- Telomere Protection: Astragalosides may help protect cellular aging markers
Olea Europaea (Olive) Fruit Oil 3rd ingredientClassic
A time-tested emollient rich in oleic acid (55-83%), linoleic acid, and vitamin E that provides deep nourishment and helps seal in moisture.
- Moisturizing: Creates protective barrier preventing transepidermal water loss
- Antioxidant: Contains polyphenols, tocopherols, and squalene
- Nourishing: Delivers essential fatty acids to replenish skin lipids
Arginine SupportingAmino Acid
An essential amino acid that serves as a natural moisturizing factor (NMF) and building block for keratin and collagen.
- Hydration: Part of skin's natural moisturizing factor complex
- Wound Healing: May help speed up skin repair processes
- pH Adjuster: Helps neutralize carbomer for proper gel formation
15 ingredients
Astragalus Membranaceus Root Extract, Butylene Glycol, Olea Europaea (Olive) Fruit Oil, Caprylic/Capric Triglyceride, 1,2-Hexanediol, Stearic Acid, Polysorbate 60, Cetearyl Alcohol, Glyceryl Stearate, Sorbitan Sesquioleate, Glyceryl Caprylate, Hydroxyethylcellulose, Carbomer, Arginine, Dimethicone
Where it fits in your routine
ROUTINEUse after toner/essence, before heavier creams. Can be used AM & PM. Pairs perfectly with Pyunkang Yul Essence Toner.
How to use
HOW TO USEDispense Product
After cleansing and toning, squeeze the dropper rubber while inside the bottle, then release to collect product. Use 2-3 drops.
Apply to Face
Dot serum on forehead, nose, cheeks, and chin. Gently massage in upward circular motions, spreading evenly across face and neck.
Pat for Absorption
Gently pat face for 30-60 seconds until fully absorbed. The dewy finish indicates proper hydration lock.
Optional: Sheet Mask
For intensive treatment, apply serum to cotton pad and place on dry areas for 5-10 minutes as a DIY mask.
Who is it for?
WHOPerfect for you if:
- You have dehydrated yet oily skin (oily surface, dry underneath)
- Your skin feels tight and lacks moisture balance
- You want a minimalist, fragrance-free formula
- You have sensitive or reactive skin
- You prefer lightweight, fast-absorbing textures
- You're looking for affordable K-beauty essentials
- You're pregnant or breastfeeding
Consider alternatives if:
- You have active fungal acne (malassezia folliculitis)
- You're highly sensitive to olive oil or fatty acids
- You prefer completely oil-free formulas
- You want active anti-aging ingredients (retinol, vitamin C)
- You need very rich, heavy-duty moisture (extremely dry skin)
- You prefer matte finishes over dewy looks
Skin type compatibility
SKIN TYPESBalances oil production without heaviness. Best for oily-dehydrated types. May feel slightly rich in summer - use sparingly.
Provides excellent emollient moisture with olive oil. Layer with heavier cream for extra dry skin in winter.
Ideal for balancing different zones. Hydrates dry cheeks while controlling T-zone without adding greasiness.
Zero-irritation tested, fragrance-free, minimal ingredients. Perfect for reactive, easily-irritated skin types.
Comedogenic rating 2/5 - generally safe but patch test first. NOT safe for fungal acne due to polysorbates and oils.
Results timeline
6+ WEEKSInstant Hydration Boost
Skin feels softer, smoother, and more supple. Light dewy glow appears. No stickiness or residue once absorbed.
95% noticed softer skinMoisture Balance Restored
Skin feels less tight and dehydrated throughout the day. Oil production begins to normalize. Reduced flakiness.
80% saw hydration improvementHealthier Complexion
Overall skin tone appears more radiant and balanced. Less need for midday touch-ups. Improved makeup application.
70% reported brighter skinLong-Term Benefits
Consistent oil-moisture balance. Calmer, less reactive skin. Improved skin barrier function and elasticity.
85% would repurchaseRatings by platform
1K+ REVIEWSPros & cons
BALANCEDPraised
- Excellent hydration that lasts all day
- Minimalist 15-ingredient formula
- Fragrance-free and color-free
- Zero-irritation tested for sensitive skin
- Great value - 100ml size lasts 3+ months
- Absorbs quickly without sticky residue
- Gives natural, dewy glow
- Cruelty-free and ethically produced
Criticized
- Dropper applicator is frustrating to use
- Not fungal acne safe
- Can feel heavy in hot, humid weather
- Too rich for very oily skin types
- Contains dimethicone (silicone)
- May cause breakouts for acne-prone skin
- Lotion-like texture, not a traditional serum
- Glass bottle not ideal for travel
Budget-friendly alternatives (dupes)
DUPESDifferent approach using snail mucin instead of botanical extract. More hydrating, better for anti-aging. Suitable for fungal acne. 100ml.
Focuses on hyaluronic acid hydration. Lighter, more watery texture. Fungal acne safe. Better for oily skin. 80ml.
Uses Centella instead of Astragalus. Better for calming redness and acne. Fungal acne safe. Lighter texture. 100ml.
Much simpler formula focused purely on hydration. Water-based, no oils. Best budget option for pure moisturizing. 30ml.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening
Store in cool, dry place away from direct sunlight. Keep bottle upright to prevent leakage. No refrigeration needed.
Glass dropper bottle with rubber pipette applicator
Yes - 100ml meets carry-on liquid limit, but glass bottle requires careful packing
Frequently asked questions
FAQYes, this serum is considered safe for use during pregnancy and breastfeeding. It contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens - all ingredients that should be avoided during pregnancy. The formula uses only gentle, EWG-rated green ingredients, and olive oil is considered safe for external use during pregnancy. As always, consult with your healthcare provider if you have specific concerns.
No, this serum is NOT safe for fungal acne. It contains several ingredients that can feed malassezia yeast, including Polysorbate 60, Sorbitan Sesquioleate, and Olea Europaea (Olive) Fruit Oil. If you have active fungal acne or are prone to it, consider alternatives like COSRX Snail Mucin Essence, Isntree Hyaluronic Acid Water Essence, or SKIN1004 Centella Ampoule which are fungal acne safe.
Yes, this serum can be layered with most actives. Apply water-based actives (vitamin C serums, AHAs, BHAs) first, wait a few minutes, then apply the Moisture Serum. For retinol, apply the serum first to create a buffer, then apply retinol on top - this can help reduce irritation. The olive oil in this serum may actually enhance absorption of some actives, so start slowly with potent ingredients.
This serum is best for combination, dry, dehydrated, and sensitive skin types. It's especially great for "oily yet dehydrated" skin that produces excess oil but still feels tight and dry. It's also excellent for sensitive and reactive skin due to its minimal, fragrance-free formula. Those with very oily skin may find it too rich, and those with fungal acne should avoid it.
You'll notice immediate benefits - softer, more supple skin right after application. Within 1-2 weeks of consistent use, most users report improved hydration levels and less tightness throughout the day. By 3-4 weeks, you should see more balanced oil production and an overall healthier, more radiant complexion. For best results, use twice daily (AM and PM) consistently.
Apply after cleansing and toning, but before heavier creams and moisturizers. The recommended order is: Cleanser → Toner/Essence → Pyunkang Yul Moisture Serum → Treatment serums (optional) → Moisturizer → Sunscreen (AM only). It pairs especially well with Pyunkang Yul Essence Toner for a complete hydrating routine.
This serum has a comedogenic rating of 2 out of 5, primarily due to the olive oil content. A rating of 2 is considered "moderately low" risk - meaning it may clog pores for some acne-prone individuals but is generally safe for most skin types. If you're highly acne-prone, patch test first and monitor your skin. Those with confirmed fungal acne should avoid this product entirely.
The serum should be used within 12 months after opening (PAO: 12M). The 100ml bottle typically lasts 3-4 months with twice-daily use. Store in a cool, dry place away from direct sunlight and keep the bottle upright to prevent leakage. If you notice any changes in color, smell, or texture, discontinue use.
Verdict: Pyunkang Yul Moisture Serum is an excellent choice for those seeking a minimalist, effective hydrating serum rooted in Traditional Korean Medicine. Its star ingredient, Astragalus Membranaceus Root Extract, provides proven anti-aging and moisturizing benefits while the simple 15-ingredient formula makes it ideal for sensitive skin. The generous 100ml size offers great value. However, it's not suitable for fungal acne-prone skin and the dropper applicator can be frustrating. Best for dry, dehydrated, combination, and sensitive skin types looking to restore oil-moisture balance without unnecessary additives.
Product Overview
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.
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.
Quick Product Notes
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.
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
Notable Effects & Ingredients
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.
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!
Ingredients Related to Skin Types
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.
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.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 0 |
Coptis Japonica Extract
Antimicrobial, Skin Conditioning
|
|
|
| 1 |
Butylene Glycol
Solvent, Skin Conditioning, Masking, Fragrance, Humectant, Viscosity Controlling, Viscositydecreasing Agent
|
Hydrating
|
|
| 0 |
Olea Europaea Fruit Oil
Masking, Perfuming, Skin Conditioning
|
Hydrating
|
|
| 1 |
Caprylic/Capric Triglyceride
Solvent, Skin Conditioning, Masking, Perfuming, Emollient
|
|
|
| 1 |
1,2-Hexanediol
Solvent, Skin Conditioning
|
Hydrating
|








