Onion Newpair B5 Ampoule
Onion Newpair B5 Ampoule
Product Description
Product overview
Isntree Onion Newpair B5 Ampoule is a lightweight, fast-absorbing Korean blemish-care ampoule powered by 85% Muan Red Onion Extract and 5% Panthenol (Vitamin B5). Formulated to fade post-acne dark spots, calm redness, strengthen a weakened skin barrier, and deliver deep hydration — all in a watery, fragrance-free, alcohol-free formula that's gentle enough for sensitive skin.
Blemish & Scar Care
85% Muan Red Onion Extract — rich in sulfur compounds and antioxidants — helps fade post-acne marks and smooth uneven texture from old breakouts.
Texture & feel
SENSORYBlemish & Scar Care
85% Muan Red Onion Extract — rich in sulfur compounds and antioxidants — helps fade post-acne marks and smooth uneven texture from old breakouts.
Barrier Repair
5% Panthenol (Pro-Vitamin B5) supports barrier recovery and reduces redness, making irritated or over-exfoliated skin feel calm again.
Tone Brightening
Tranexamic Acid, Niacinamide and Ferulic Acid work together to even skin tone and reduce the look of dark spots and PIH.
Triple-Hyal Hydration
Three molecular weights of hyaluronic acid plus Trehalose and Betaine deliver layered, lasting moisture without heaviness.
Safety & compatibility
SAFEContains topical tranexamic acid. Generally considered low-risk when applied to skin, but human data is limited — check with your OB/GYN before use.
Contains Melia Azadirachta (neem) flower extract and plant extracts that may feed malassezia yeast. Skip if you're prone to fungal folliculitis.
No retinol, retinyl palmitate, salicylic acid, or hydroquinone. Safe to layer alongside your other actives.
Zero added fragrance, essential oils, or drying alcohols. A solid pick for reactive and easily-irritated skin.
Clinically evaluated for sensitive skin by the brand. A patch test behind the ear is still recommended for first-time users.
Brand testing showed a measurable reduction in transepidermal water loss (TEWL) after 4 weeks of daily use.
Ingredient breakdown
INGREDIENTSAllium Cepa (Red Onion) Bulb Extract 85%Proven
The star ingredient, sourced from Muan red onions grown in mineral-rich Korean soil. Loaded with sulfur compounds, quercetin, and anthocyanin antioxidants that target post-acne marks and uneven tone.
- Source: A 2018 study found onion extract gel as effective as silicone gel at improving surgical scars.
- Source: A 2008 clinical study in 60 patients showed onion extract reduced scar redness, texture, and overall appearance.
- Mechanism: Quercetin inhibits fibroblast over-proliferation and calms inflammation, helping scars flatten and fade.
Panthenol (Pro-Vitamin B5) 5%Proven
A gold-standard barrier-repair humectant that converts into Vitamin B5 (pantothenic acid) on contact with skin. It binds water, reduces inflammation, and supports healthy lipid production.
- Source: Clinical research confirms topical panthenol improves stratum corneum hydration, elasticity, and barrier function.
- Source: 5% is a well-studied, therapeutic-level concentration used in medical dressings for wound and post-procedure care.
- Benefit: Non-irritating (irritancy score: 0) and non-comedogenic (0), suitable even for very reactive skin.
Niacinamide (Vitamin B3) ~2–4%*Proven
Listed 4th in the INCI — a multi-functional vitamin that supports barrier repair, evens tone, visibly minimizes pores, and calms redness. Gentle enough to layer with everything else in your routine.
- Source: A 2002 study showed topical niacinamide significantly reduced hyperpigmentation and improved skin tone over 8 weeks.
- Source: Peer-reviewed research shows it stimulates ceramide synthesis, strengthening the skin barrier from within.
- Note: Exact % is not disclosed by the brand. Based on INCI position, it likely sits in the 2–4% range.
Tranexamic Acid <1%Proven
A synthetic lysine derivative widely studied for melasma and stubborn dark spots. It interrupts the inflammation-melanin pathway triggered by UV and hormones, so pigment production slows down.
- Source: Multiple peer-reviewed studies show topical tranexamic acid (2–5%) reduces melasma and PIH with minimal irritation.
- Mechanism: Blocks plasmin activity in keratinocytes, lowering melanocyte stimulation.
- Note: Concentration here is lower (based on INCI position) but works synergistically with niacinamide and ferulic acid.
Triple Hyaluronic Acid Complex Multi-MWProven
Three forms of HA at different molecular weights: Sodium Hyaluronate (surface hydration), Hydrolyzed Hyaluronic Acid (mid-depth), and Sodium Acetylated Hyaluronate (enhanced adhesion and penetration).
- Source: Studies confirm multi-weight HA hydrates more effectively than a single molecular weight.
- Benefit: Sodium Acetylated Hyaluronate ("Super HA") binds more tenaciously to skin than standard HA for longer-lasting moisture.
Ferulic Acid ~0.1–0.5%*Proven
A plant-derived antioxidant that neutralizes free radicals from UV and pollution. It's also known to stabilize and boost the performance of other antioxidants.
- Source: A 2005 study demonstrated ferulic acid significantly improves the photoprotective effect of Vitamin C + E combinations.
- Benefit: Works alongside onion extract's own antioxidant profile for layered environmental defense.
Adenosine + Acetyl Glucosamine SupportingPromising
A smoothing duo: Adenosine, a Korean-approved functional anti-aging ingredient, softens the look of fine lines, while Acetyl Glucosamine supports hyaluronic acid synthesis and brightens the look of uneven tone.
- Source: Adenosine is an MFDS-recognized (Korea's FDA) functional anti-wrinkle ingredient.
- Benefit: Acetyl Glucosamine is a precursor to both hyaluronic acid and keratin, supporting skin repair.
26 ingredients
Allium Cepa (Onion) Bulb Extract (85%), Panthenol (5%), 1,2-Hexanediol, Niacinamide, Trehalose, Betaine, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Arginine, Butylene Glycol, Caprylyl Glycol, Water, Allantoin, Pentylene Glycol, Hydroxyacetophenone, Caffeine, Acetyl Glucosamine, Melia Azadirachta Flower Extract, Adenosine, Ammonium Acryloyldimethyltaurate/VP Copolymer, Coccinia Indica Fruit Extract, Disodium EDTA, Tranexamic Acid, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Sodium Acetylated Hyaluronate, Ferulic Acid.
Where it fits in your routine
ROUTINEApply after watery steps and before richer creams. The lightweight texture layers smoothly under any moisturizer or SPF — morning and evening.
How to use
HOW TO USEStart with clean, toned skin
Cleanse thoroughly, then apply your toner or essence. Skin can be slightly damp for even better absorption.
Dispense 2–3 drops
Use the dropper to release 2–3 drops — about a pea-sized amount. More isn't better; the formula is concentrated.
Apply in circular motions
Spread evenly across face and neck. Focus on areas with dark spots, blemish scars, or uneven texture.
Pat in gently
Lightly tap with your fingertips until fully absorbed — typically under 30 seconds. No stickiness left behind.
Seal with moisturizer
Lock in actives with your usual cream. In the morning, always finish with broad-spectrum SPF to protect fading spots.
Who is it for?
WHOPerfect for you if:
- You have post-acne marks, dark spots, or PIH you want to fade
- Your barrier feels compromised after over-exfoliating or retinol use
- You prefer lightweight, fragrance-free formulas
- You have sensitive or reactive skin and hate stingy products
- You want a gentle daily ampoule you can use with other actives
- You're building a K-beauty layering routine
Consider alternatives if:
- You have fungal acne (malassezia folliculitis)
- You have a known allergy to onion/allium family ingredients
- You expect overnight results — fading spots takes weeks
- You want a heavy, rich cream texture
- You're pregnant and prefer to skip all tranexamic acid
- You need a full anti-aging product with retinoids or peptides as the hero
Skin type compatibility
SKIN TYPESWatery, oil-free texture absorbs fast with zero shine or greasy residue.
Adds a solid hydration layer, but dry skin will need a richer cream on top.
Balances well — hydrates dry cheeks without overwhelming the T-zone.
Fragrance- and alcohol-free with soothing panthenol. Patch test if you react to allium.
Non-comedogenic and targets post-acne marks directly. Not ideal for fungal acne, though.
Adenosine and antioxidants help — but pair with a dedicated retinoid or peptide serum for fine lines.
Results timeline
WEEK 8–12Instant Hydration & Calm
Skin feels immediately plumper, smoother, and less red right after application — thanks to hyaluronic acid and panthenol.
80%+ noticedLess Redness, Softer Texture
Active breakouts look less angry, and skin feels noticeably softer. Barrier starts to feel more resilient.
65% noticedDark Spots Begin to Fade
Post-acne marks visibly lighten. Skin tone looks more even, and transepidermal water loss is reduced (per brand's clinical data).
55% noticedClearer, Brighter Complexion
Long-standing PIH significantly faded, fewer new blemishes, and overall tone looks noticeably more even and luminous.
45% noticedRatings by platform
1K+ REVIEWSPros & cons
BALANCEDPraised
- High, transparent concentrations: 85% onion extract & 5% panthenol
- Genuinely calms redness and reactive skin
- Lightweight, watery texture — layers easily under anything
- Fragrance-free, alcohol-free, low-irritation formula
- Works on post-acne marks over several weeks of use
- Great value for a 50ml K-beauty ampoule
- Well-curated active stack (niacinamide + tranexamic acid + ferulic)
Criticized
- Not fungal acne safe — contains neem and botanical extracts
- Results on hyperpigmentation take 4–8+ weeks of consistent use
- Dropper can feel stiff or drip unevenly for some users
- Some reactive-skin users report mild initial tingling
- 50ml goes fast if used twice daily on face + neck
- Lower %-concentration of hero brightening actives vs. dedicated spot serums
Budget-friendly alternatives (dupes)
DUPESMuch cheaper and targets blemishes + pores with high-dose niacinamide. Lacks onion extract, panthenol, and tranexamic acid, so less calming and less targeted for scar marks.
Similar gentle, hydrating K-beauty ampoule at a lower price. Uses propolis instead of onion for calming + barrier support. Also not FA-safe. Slightly better for glow, slightly weaker on scar-fading.
A cult-favorite alternative focused on barrier repair and post-acne healing using 96% snail mucin. Similar texture, but not vegan. Better for hydration, weaker on pigmentation.
The brand's original onion booster — same hero ingredient at slightly different concentration, with a microneedle spicule delivery system. More intensive but less daily-friendly.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening. Use within a year once the seal is broken.
Keep in a cool, dry place away from direct sunlight. Skincare fridge is optional but fine.
Glass bottle with dropper applicator. Keeps product hygienic and minimizes oxidation.
Yes — 50ml is well under the 100ml TSA carry-on limit. Glass dropper should be packed with care.
Frequently asked questions
FAQUse with caution. The formula has no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. However, it does contain topical tranexamic acid. While topically-applied tranexamic acid is generally considered low-risk because absorption through the skin is minimal, human pregnancy data is limited, and some dermatologists recommend avoiding it to be safe. Check with your OB/GYN or dermatologist before adding this during pregnancy or breastfeeding.
No — it is not considered fungal acne safe. The formula contains Melia Azadirachta (neem) flower extract, Coccinia Indica fruit extract, and other botanical extracts that may feed malassezia yeast. If you struggle with fungal folliculitis (small uniform bumps on forehead, chest, back), consider a fully FA-safe alternative instead.
Yes. The formula is gentle and layers well with most actives. With retinol or exfoliating acids (AHA/BHA), use this ampoule on alternate evenings or apply it as a buffer before actives to reduce irritation. With vitamin C, apply vitamin C in the morning and this ampoule in the evening for best tolerance. Always finish your AM routine with SPF when using any brightening or exfoliating actives.
It's most loved by oily, combination, and acne-prone skin dealing with post-acne marks, uneven tone, or a compromised barrier. Sensitive skin generally tolerates it well thanks to the fragrance-free, alcohol-free formula. Very dry or mature skin can still use it, but will likely want a richer moisturizer layered on top.
Hydration and calming effects are typically noticeable from day one. Reduced redness and smoother texture appear within 1–2 weeks. Visible fading of dark spots and post-acne marks usually takes 4–8 weeks of consistent twice-daily use. Deeper, older pigmentation may take 12 weeks or longer — and you must pair it with daily SPF for results to hold.
After cleanser, toner, and essence — but before heavier serums, moisturizer, and sunscreen. As a lightweight ampoule, it should go on the watery-thin side of your routine. Use it morning and evening on clean skin, then lock in with moisturizer. In the morning, always finish with broad-spectrum SPF 30+.
No, the formula is non-comedogenic (rated 1/5). It contains no heavy oils, butters, or common pore-clogging ingredients. Both panthenol and the main humectants score 0 for comedogenicity. Most acne-prone users report it doesn't cause breakouts, though anyone with fungal acne should skip it due to botanical extracts unrelated to classic comedogenicity.
The Period After Opening (PAO) is 12 months. Once you break the seal, use within a year for best potency. The unopened shelf life is typically 24–30 months from manufacture. Check the batch code on the bottle to confirm. Store in a cool, dry spot away from direct sunlight. If the color or scent changes significantly, discontinue use.
Verdict: The Isntree Onion Newpair B5 Ampoule is a genuinely well-formulated K-beauty ampoule that earns its cult status. With transparent, high-percentage hero ingredients (85% Muan red onion extract + 5% panthenol) backed by a smart support cast of niacinamide, tranexamic acid, ferulic acid, and triple-weight hyaluronic acid, it tackles post-acne marks, redness, and barrier damage in one lightweight, fragrance-free step. Oily, combination, and acne-prone skin will likely love it — sensitive skin tolerates it well too. The main caveats: it's not fungal-acne safe, and visible pigmentation fading requires patience (4–8+ weeks) plus religious sunscreen use. At its price point, it offers excellent value versus pricier Western dupes and stands tall against K-beauty favorites from COSRX and Beauty of Joseon. A worthy addition if blemish marks, dullness, or a struggling barrier are on your skincare agenda.
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 |
|---|---|---|---|
| 1 |
Panthenol
Skin Conditioning, Antistatic Agent, Hair Conditioning
|
Promotes Wound Healing
Hydrating
Redness
Irritation
|
|
| 0 |
Allium Cepa Bulb Extract
Skin Conditioning
|
Promotes Wound Healing
Redness
Irritation
|
|
| 1 |
1,2-Hexanediol
Solvent, Skin Conditioning
|
Hydrating
|
|
| 1 |
Niacinamide
Skin Conditioning, Hair Conditioning, Smoothing
|
Promotes Wound Healing
Redness
Irritation
Dark Spots
Pores
|
|
| 1 |
Trehalose
Humectant, Flavoring Agent, Moisturising
|
Hydrating
|








