SKIN1004 Tea-Trica Relief Ampoule 50ml dropper bottle — tea tree and BHA acne treatment serum
Promising for Acne
What Makes This Different

Most acne ampoules either go hard on actives and destroy the barrier, or go soft and deliver nothing meaningful. This one uses tea tree leaf water as the vehicle, adds a treatment-tier BHA derivative, and wraps the whole thing in the centella triterpene panel and beta-glucan so it can actually be used daily.

SKIN1004

SKIN1004 Tea-Trica Relief Ampoule Review

Acne Treatment Ampoule
serum ampoule k beauty Paraben Free Cruelty Free Vegan

The treatment-tier anchor of SKIN1004's Tea-Trica line — a tea-tree-water-based ampoule that carries a treatment-grade betaine salicylate dose plus the full centella triterpene panel and beta-glucan for buffering. For oily, acne-prone skin, it's one of the better K-beauty acne serums in this price range.

$26.00
30ml
4.4 ★★★★★
360 reviews
Made in South Korea Launched 2023 All-year use PAO: 12 months
Buy at Amazon ♥
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Note: This ampoule launched in 2023 and scoring draws on ingredient analysis plus the established evidence base for betaine salicylate and tea tree formulations. We'll revisit as more independent reviews accumulate.

Verdicts

How well it fits each concern

Verdict by concern tap a concern for the case

Promisingfor AcneNiacinamide has trial-level evidence for acne but no guideline or regulatory standing yet — promising, short of a recommendation; the other actives here are not yet assessed for it.Moderate evidenceStandard tolerability43 reviews collected

The case for it

  1. Niacinamide has trial-level evidence for this concern but no guideline or regulatory standing yet.
  2. It is present at an effective concentration, declared or high in the ingredient list.
  3. The formula carries no trigger this concern is sensitive to, with the cautions noted.

Cautions: fragrance.

What would change this: Guideline or regulatory standing for the active on this concern would move this from a promising bet to a recommendation.

Same rule for everyone. “Promising” is the verdict on 7,858 of 45,024 concern verdicts across the catalog; rule R9p decided 7,858 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work
Rule
R9p — 0.5.0: 'Unproven' beside three filled dots read as one question answered twice with opposite words (7,018 rows). The chip measures standing, the dots measure trial volume; where the row carries at least one RCT or a tier-2 source (moderate dots) and the active is present at a working level, the honest word is Promising. Unproven is reserved for plausible-standing rows with limited or weak evidence, or an under-dosed form. Same rank as Unproven — a bet either way; the dots order them. · the full register
Carrying active
Niacinamide
Standing
plausible — trials support it
Form
adequate (declared 4%) — studied range 4–5%, from the OTC monograph or label; needs leave-on contact; judge it after ~8 weeks
Tolerability
standard — fragrance load
Row checked
against its sources on July 17, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

All acne products →
Promisingfor Excess OilinessNiacinamide has trial-level evidence for excess oiliness but no guideline or regulatory standing yet — promising, short of a recommendation; the other actives here are not yet assessed for it.Moderate evidenceStandard tolerability43 reviews collected

The case for it

  1. Niacinamide has trial-level evidence for this concern but no guideline or regulatory standing yet.
  2. It is present at an effective concentration, declared or high in the ingredient list.
  3. The formula carries no trigger this concern is sensitive to, with the cautions noted.

What would change this: Guideline or regulatory standing for the active on this concern would move this from a promising bet to a recommendation.

Same rule for everyone. “Promising” is the verdict on 7,858 of 45,024 concern verdicts across the catalog; rule R9p decided 7,858 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work
Rule
R9p — 0.5.0: 'Unproven' beside three filled dots read as one question answered twice with opposite words (7,018 rows). The chip measures standing, the dots measure trial volume; where the row carries at least one RCT or a tier-2 source (moderate dots) and the active is present at a working level, the honest word is Promising. Unproven is reserved for plausible-standing rows with limited or weak evidence, or an under-dosed form. Same rank as Unproven — a bet either way; the dots order them. · the full register
Carrying active
Niacinamide
Standing
plausible — trials support it
Form
adequate (declared 4%) — studied range 2%, from the trials on the row; needs leave-on contact; judge it after ~8 weeks
Tolerability
standard
Row checked
against its sources on July 17, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

All excess oiliness products →
Promisingfor Large PoresNiacinamide has trial-level evidence for large pores but no guideline or regulatory standing yet — promising, short of a recommendation; the other actives here are not yet assessed for it.Moderate evidenceStandard tolerability43 reviews collected

The case for it

  1. Niacinamide has trial-level evidence for this concern but no guideline or regulatory standing yet.
  2. It is present at an effective concentration, declared or high in the ingredient list.
  3. The formula carries no trigger this concern is sensitive to, with the cautions noted.

What would change this: Guideline or regulatory standing for the active on this concern would move this from a promising bet to a recommendation.

Same rule for everyone. “Promising” is the verdict on 7,858 of 45,024 concern verdicts across the catalog; rule R9p decided 7,858 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work
Rule
R9p — 0.5.0: 'Unproven' beside three filled dots read as one question answered twice with opposite words (7,018 rows). The chip measures standing, the dots measure trial volume; where the row carries at least one RCT or a tier-2 source (moderate dots) and the active is present at a working level, the honest word is Promising. Unproven is reserved for plausible-standing rows with limited or weak evidence, or an under-dosed form. Same rank as Unproven — a bet either way; the dots order them. · the full register
Carrying active
Niacinamide
Standing
plausible — trials support it
Form
adequate (declared 4%) — studied range 4%, from the trials on the row; needs leave-on contact; judge it after ~8 weeks
Tolerability
standard
Row checked
against its sources on July 17, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

All large pores products →
Good choicefor HyperpigmentationNiacinamide is a trial-supported active for hyperpigmentation; this ampoule carries it at 4%.Moderate evidenceStandard tolerability43 reviews collected

The case for it

  1. Niacinamide has trial-supported standing for this concern.
  2. It is present at an effective concentration, declared or high in the ingredient list.
  3. The formula carries no trigger this concern is sensitive to, with the cautions noted.

Same rule for everyone. “Good choice” is the verdict on 9,564 of 45,024 concern verdicts across the catalog; rule R5 decided 9,072 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work
Rule
R5 — Trial-supported or guideline-supported active, adequately or plausibly dosed. · the full register
Carrying active
Niacinamide
Standing
supported — trials support it
Form
adequate (declared 4%) — studied range 2–5%, from the trials on the row; needs leave-on contact; judge it after ~8 weeks
Tolerability
standard
Row checked
against its sources on July 17, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

All hyperpigmentation products →
Unprovenfor Acne ScarringCentella Asiatica has early or mechanistic evidence for acne scarring — a reasonable bet, not a recommendation; the other actives here are not yet assessed for it.Limited evidenceStandard tolerability43 reviews collected

The case for it

  1. Centella Asiatica Full Triterpene Panel has early or mechanistic evidence for this concern, not trial-backed standing.
  2. It is plausibly present at a working level, though the concentration is not declared.
  3. The formula carries no trigger this concern is sensitive to, with the cautions noted.

What would change this: A declared concentration would move this to a firmer reading of the dose.

Same rule for everyone. “Unproven” is the verdict on 1,111 of 45,024 concern verdicts across the catalog; rule R9 decided 1,111 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work
Rule
R9 — Plausible-tier actives alone do not earn a recommendation, and 'not for this' would overstate the case against them. 'Unproven' with the evidence dots lets the reader judge the bet (added 0.2.0 after the first shadow run put a 10% niacinamide serum at 'not for this' for hyperpigmentation). 0.5.0: the closing clause reads the other heroes — "nothing else here addresses it" only when every other active has a researched 'none' row; "not yet assessed" when that is the truth. Rows whose dots read moderate or better now reach R9p first. · the full register
Carrying active
Centella Asiatica Full Triterpene Panel
Standing
plausible — trials support it
Form
plausible
Tolerability
standard
Row checked
against its sources on July 17, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

All acne scarring products →

Also listed for Blackheads and Rough Texture — the actives here (Centella Asiatica, Niacinamide, Betaine Salicylate, Beta-Glucan) are in our research queue for those concerns; there is no verdict until their evidence rows are written. That is a gap in our table, not a mark against the product.

A verdict is DermApproved’s assessment of how well a product’s ingredients fit a concern — never a claim about what the product treats. Evidence dots and collected reviews sit beside it and are never blended in. Rules 0.5.1 · evidence table ev-2026.09-r228 · how we decide

Assessment

Pros & Cons

Pros

  • ✓ Tea tree leaf water as the base vehicle, not a trace additive
  • ✓ Treatment-grade betaine salicylate dose for real pore turnover
  • ✓ Niacinamide at meaningful concentration for sebum and marks
  • ✓ Full centella triterpene panel plus beta-glucan for buffering
  • ✓ Lightweight texture with no sting on application
  • ✓ Fragrance-free and suitable for twice-daily use

Cons

  • ✗ Not for dry, sensitive, or rosacea-prone skin
  • ✗ Not pregnancy safe due to BHA derivative
  • ✗ Not strictly fungal acne safe due to PEG ingredient
  • ✗ Not enough to replace prescription treatment for severe cystic acne
  • ✗ Glass dropper dispenses slowly for daily use
Review

Full Review

Every SKIN1004 product line seems to be built around one active centerpiece, and in the Tea-Trica range, this ampoule is that centerpiece. The Purifying Toner is the daily maintenance step. The B5 Cream is the moisturizer that buffers and hydrates. The Relaxing Mask is the weekly intensive. And this ampoule is the part of the routine that's actually expected to do the treatment work — the layer that targets active breakouts, reduces sebum output, and fades the marks left behind. That framing matters because it changes how you should evaluate the formula. You're not asking 'is this nice?' — you're asking 'does it do the job?' For the right skin type, the answer is yes.

The first thing to notice on the INCI is what's at the top. Tea tree leaf water, not water, is the base. This is a formulation pattern SKIN1004 uses across the Tea-Trica line, and it's meaningful in the same way a high-centella-water base is meaningful in their cica line. The vehicle of the product is already carrying antimicrobial activity against Cutibacterium acnes before any of the other actives contribute. Published clinical research on tea tree has shown efficacy in mild-to-moderate inflammatory acne, and while most of that research used higher-concentration essential oil gels, the water and leaf extract forms carry the same antimicrobial compounds without the sting. Using them as the base is how you get the benefit without the irritation.

Betaine salicylate is the second major active, and this is where the ampoule differs meaningfully from the toner. In a toner, betaine salicylate is typically dosed for daily maintenance. In an ampoule, it's positioned as a treatment-grade step, and the INCI placement here suggests a concentration in the full 4% Korean formulation range — approximately equivalent to 0.5% traditional salicylic acid but with less surface sting due to the slower release. That's enough to do real pore-turnover work, and paired with the tea tree water base, the antimicrobial and keratolytic mechanisms hit different targets in the same treatment session.

Niacinamide sits higher on the INCI in this ampoule than in the rest of the line. It's likely in the 4-5% range, which is the sweet spot for multiple effects at once — sebum regulation through its action on sebocytes, post-inflammatory hyperpigmentation support, and barrier maintenance. The research on niacinamide at these concentrations is extensive and well-replicated. Combined with zinc PCA for additional sebum-balance support and beta-glucan for immunomodulatory soothing, the supporting cast is unusually complete for an acne serum. Beta-glucan in particular is an under-recognized addition — it has a well-documented anti-inflammatory and wound-healing profile that pairs naturally with the centella triterpene layer doing the main buffering work.

That centella layer is what keeps this ampoule from being just another 'it works but hurts' acne product. All four triterpenes show up in the INCI. Their role here is to dampen the inflammation that would otherwise be triggered by the BHA and tea tree, and to support barrier function during what can be a dehydrating treatment phase. This is the same pattern SKIN1004 uses across the rest of the Tea-Trica line, and it's the main reason this ampoule can be used twice daily rather than every other day. Without the centella, it would need a much more cautious application schedule.

Texture is lightweight and gel-like, absorbing in about thirty seconds with no stickiness. Three to four drops covers the face; any more will pill under the follow-up moisturizer or sunscreen. On application, there's no sting and no adjustment period — the formulation is engineered to be immediately comfortable. Breakout reduction is usually visible by the end of the first week, and the post-inflammatory marks that often linger after breakouts start fading by the third or fourth week.

Honest limitations: this isn't for dry or sensitive skin, and it's not for rosacea. The tea tree and BHA combination is too much for reactive types. It's not pregnancy-safe because of the betaine salicylate, and it's not strictly fungal acne safe because of the PEG ingredient — though the tea tree actives sometimes fit into fungal acne routines depending on individual tolerance. For severe cystic acne, this is an adjunct to prescription treatment, not a replacement. And the glass dropper is slower to dispense than a pump would be, which is a minor ergonomic complaint rather than a formulation one.

At around $28 for 50ml, the value is fair. It's priced similarly to the Probio-Cica Intensive Ampoule from the same brand, and meaningfully cheaper than Western acne serums with comparable ingredient density. For oily or combination skin with mild-to-moderate inflammatory acne looking for a daily treatment serum that won't sting them into inconsistent use, this is one of the stronger K-beauty options in the category — and it's the Tea-Trica product that most of the rest of the line is organized around.

Formula

Key Ingredients

The hero actives that drive this product's performance.

IngredientFunctionEvidence
Tea Tree Leaf Water (high concentration base) Uses tea tree water as the vehicle of the ampoule rather than a trace additive — the mechanism that lets this serum carry genuine antimicrobial activity against acne bacteria without the sting of essential oil. Not yet assessed
Betaine Salicylate (BHA) (likely ~4%) A K-beauty salicylic acid derivative that slowly releases free salicylic acid on skin — here it's in ampoule form, which means a higher treatment-grade dose than the toner carries. Not yet assessed
Centella Asiatica Full Triterpene Panel Essential buffering for a treatment-tier BHA and tea tree combination — the reason this ampoule can be used daily without wrecking the skin it's meant to clear. Limited for Acne Scarring
Niacinamide (likely 4-5%) Sits higher on the INCI in the ampoule than in the toner — working harder here on sebum, post-inflammatory marks, and pigment, which are the three things left behind after a breakout. Emerging for Hyperpigmentation
Beta-Glucan Adds immunomodulatory soothing alongside the centella — a reinforcement layer that helps this ampoule feel less 'treatment ampoule' and more 'treatment and recovery in one bottle.' Not yet assessed
Full INCI List · pH 4.5

Melaleuca Alternifolia (Tea Tree) Leaf Water, Centella Asiatica Leaf Water, Propanediol, Glycerin, Niacinamide, 1,2-Hexanediol, Pentylene Glycol, Betaine Salicylate, Melaleuca Alternifolia (Tea Tree) Leaf Extract, Centella Asiatica Extract, Madecassoside, Asiaticoside, Asiatic Acid, Madecassic Acid, Panthenol, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Zinc PCA, Allantoin, Houttuynia Cordata Extract, Portulaca Oleracea Extract, Beta-Glucan, PEG-40 Hydrogenated Castor Oil, Arginine, Tromethamine, Carbomer, Ethylhexylglycerin, Disodium EDTA

Safety & Formulation Facts
✗ Not Pregnancy Safe ✓ Fragrance Free✓ Alcohol Free✓ Oil Free✓ Silicone Free✓ Paraben Free✓ Sulfate Free✓ Cruelty Free✓ Vegan✗ Fungal Acne Safe
Potential Irritants
Betaine Salicylate
Compatibility

Skin Match

Best For
Works For
Not Ideal For
Routine Step

serum

Time of Day

AM & PM

Layering Tips

Apply after toner, before moisturizer. A few drops is enough — more will pill.

Results Timeline

Immediate calming. Active breakouts visibly reducing in 2-3 weeks. Full tone and texture improvement by 8-12 weeks.

Pairs Well With
niacinamideazelaic-acidbenzoyl-peroxideadapalene
Planning a combo? Check it against what you already use
Conflicts With
strong AHA serums used simultaneously
See where it fits — layering order & night-splitting
Sample AM Routine
  1. Gentle cleanser
  2. Purifying Toner
  3. SKIN1004 Tea-Trica Relief Ampoule
  4. Tea-Trica B5 Cream
  5. SPF
Sample PM Routine
  1. Oil cleanser
  2. Gentle cleanser
  3. Purifying Toner
  4. SKIN1004 Tea-Trica Relief Ampoule
  5. Tea-Trica B5 Cream
Evidence

Science & Expert Perspective

The Science

Tea tree oil (Melaleuca alternifolia) has a substantial published evidence base for antimicrobial activity against Cutibacterium acnes, with clinical trials showing efficacy in mild-to-moderate inflammatory acne comparable to low-dose benzoyl peroxide, though with slower onset. Using tea tree leaf water as the ampoule base delivers the antimicrobial terpenes at lower concentrations and with significantly less irritation than essential oil formulations. Betaine salicylate is a salicylic acid ester that slowly releases free salicylic acid on skin — Korean dermatology research supports its use as a gentler BHA alternative at concentrations up to 4%, with comedolytic and anti-inflammatory activity comparable to lower-strength salicylic acid and reduced sensory irritation. Salicylic acid itself has decades of published evidence for acne efficacy. Niacinamide at 4-5% has well-documented effects on sebum production, post-inflammatory hyperpigmentation, and barrier function across multiple published studies. The centella triterpene panel provides anti-inflammatory activity supported by peer-reviewed research on madecassoside and asiaticoside. Beta-glucan has documented immunomodulatory and wound-healing activity. Zinc PCA provides promising evidence for sebum regulation. The overall multi-mechanism approach — antimicrobial, keratolytic, sebum-regulating, anti-inflammatory, and barrier-supportive — is a coherent strategy for managing mild-to-moderate inflammatory acne in a daily leave-on format.

Dermatologist Perspective

Dermatologists commonly recommend multi-mechanism acne serums combining low-concentration leave-on BHAs with niacinamide for patients with mild-to-moderate inflammatory acne. Among dermatologists, the consensus is that tea tree derivatives can provide useful antimicrobial adjunct action, particularly for patients who prefer plant-based actives or cannot tolerate benzoyl peroxide. This type of ampoule is frequently suggested as a daily supportive step alongside prescription topical retinoids or oral treatments, rather than as a primary treatment for moderate-to-severe acne. Patients with sensitive skin or rosacea are typically advised to avoid tea tree and BHA combinations.

Guidance

Usage & Recommendations

How to Use

Apply 3-4 drops to clean skin after toner, pressing into the face and neck. Follow with moisturizer and sunscreen in the morning, or a richer cream at night. Twice-daily use is the intended cadence. If you're pairing it with retinoids or other exfoliants, start once daily and build up to avoid compounding dryness. Always follow with sunscreen in the morning — BHAs can mildly increase sun sensitivity.

Value Assessment

At approximately $28 for 50ml, this ampoule is competitively priced within the K-beauty acne category. Comparable tea tree and BHA serums from Western brands often run $40-60 for similar sizes with less complete ingredient lists. For oily or acne-prone skin looking for a daily treatment serum, the cost-per-benefit is reasonable. A bottle lasts about two months of twice-daily full-face use. For standalone use, it offers better value than most clinical-brand equivalents.

Who Should Buy

Oily or combination skin with mild-to-moderate inflammatory acne, active breakouts, and post-inflammatory marks. Also a strong fit for anyone already using the Tea-Trica toner and cream who wants a treatment-tier serum to complete the routine.

Who Should Skip

Dry, sensitive, or rosacea-prone skin. Anyone pregnant. If your acne is severe or cystic, this is a supportive product rather than a treatment — you'll need prescription care as the primary.

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Details

Product Details

Texture

Lightweight gel-serum with a slight slip

Scent

Fragrance-free with faint tea tree note from the water base

Packaging

Glass dropper bottle

Finish
lightweightfast-absorbingmatte
What to Expect on First Use

Cool on application. No immediate tingle. Skin usually feels clearer by day 5-7 and visibly less reactive by week 2.

How Long It Lasts

About 2 months applied morning and evening full-face use

Period After Opening

12 months

Opened yours? Track the toss-by date
Best Season

All Year

Background

The Story Behind This Product

The Tea-Trica Relief Ampoule was developed as the treatment centerpiece of SKIN1004's acne line, sitting between the Purifying Toner and the B5 Cream. It's designed to be the active step in the routine rather than a supporting one.

About SKIN1004 Established Brand (5–20 years)

SKIN1004 launched in 2016 and built its name on Madagascar centella. The Tea-Trica Relief Ampoule is the treatment centerpiece of the brand's acne-focused Tea-Trica line, layering tea tree and BHA activity with the centella triterpene panel.

Brand founded: 2016 · Product launched: 2023
Myth vs. Reality

Common Myths

Myth

Tea tree serums are only useful for active breakouts, not maintenance

Reality

The tea tree antimicrobial activity does work on active breakouts, but niacinamide, BHA, and zinc PCA in this formula also target the conditions that cause breakouts — excess sebum, clogged pores, and post-inflammatory marks. It's a maintenance product, not just a rescue product.

FAQ

Frequently Asked Questions

How does this compare to the Purifying Toner?

The toner is a daily maintenance step with a lower BHA concentration. The Relief Ampoule is the treatment step — higher actives, more concentrated niacinamide, and beta-glucan added for soothing. You can use both in the same routine with the toner first.

Is the Tea-Trica Relief Ampoule pregnancy safe?

No — it contains betaine salicylate, a salicylic acid derivative. Most dermatologists recommend avoiding leave-on BHAs during pregnancy. Use the Probio-Cica Intensive Ampoule instead.

Is it okay to use Tea-Trica Relief Ampoule with a retinoid?

Yes, but build slowly. Start with retinol every third night and use the ampoule on non-retinol nights. Both are drying in the first few weeks; pairing them too aggressively can compromise your barrier.

Is Tea-Trica Relief Ampoule safe for fungal-acne-prone skin?

Not strictly. It contains PEG-40 hydrogenated castor oil. The tea tree and BHA actives are often considered helpful for malassezia, but the formula isn't on standard safe lists.

How many drops should I use?

Three to four drops is enough for the full face. More will pill under sunscreen or moisturizer. A bottle typically lasts about two months of twice-daily use.

Reviews

What Reviewers Tend to Say

Recurring themes our editors read across retailer reviews of this product — summaries in our words, not quotations, and not a substitute for your own patch test.

Common Praise

Reduces active breakouts within weeks

Doesn't sting like traditional BHA serums

Lightweight texture

Fades marks alongside clearing

Common Complaints

Can be drying when layered with the toner

Not enough for severe cystic acne

Dropper delivery is slow

Notable Endorsements
Featured in K-beauty creator routines targeting active breakouts and post-acne marks
Appears In
Best Serums for AcneSerums That Suit Large Pores
Featured in Routines
A Realistic Niacinamide Skincare Routine
Related Conditions
acneexcess oilinessblackheadslarge poreshyperpigmentation
Related Ingredients
tea treesalicylic acidcentella asiaticaniacinamidebeta glucan