Triple Effect Fluid Serum
Triple Effect Fluid Serum
Product Description
Product overview
A clinically-proven triple-action serum with patented Thiamidol that targets post-acne marks, reduces active blemishes, and controls excess shine. Dermatologist-recommended for blemish-prone skin with visible results in just 2 weeks.
Anti-Marks Action
Patented Thiamidol targets the root cause of hyperpigmentation by inhibiting tyrosinase, reducing post-acne marks by up to 80%.
Texture & feel
SENSORYAnti-Marks Action
Patented Thiamidol targets the root cause of hyperpigmentation by inhibiting tyrosinase, reducing post-acne marks by up to 80%.
Anti-Blemish Power
Salicylic acid unclogs pores and fights bacteria, while Licochalcone A prevents new breakouts from forming.
Shine Control
Sebum-regulating technology delivers a long-lasting dry, matte finish without over-drying the skin.
Clinically Proven
Visible results in 2 weeks with continuous improvement. 95% of users say it beats post-acne marks in clinical studies.
Safety & compatibility
SAFEContains Salicylic Acid (1.1-1.7%). Topical use at concentrations under 2% is generally considered safe, but consult your healthcare provider before use during pregnancy.
Oil-free formula contains no ferments, problematic fatty acids, or esters that feed Malassezia yeast. Safe for fungal acne sufferers.
Comedogenic rating 0/5. Clinically tested to not clog pores. Non-acnegenic formula suitable for acne-prone skin.
Contains Alcohol Denat. (7-11%) to enhance active ingredient penetration and provide antibacterial benefits. May cause mild tingling that fades within minutes.
Do not combine with other Thiamidol-containing products. Use only one Thiamidol product at a time to avoid over-treatment.
Free from common allergens, parabens, silicones, and sulfates. Contains fragrance (Parfum) - patch test if sensitive to fragrances.
Ingredient breakdown
INGREDIENTSThiamidol (Isobutylamido Thiazolyl Resorcinol)Patented
Eucerin's breakthrough patented ingredient, identified as the most potent human tyrosinase inhibitor out of 50,000+ tested compounds. Works better than hydroquinone without the side effects.
- Mechanism: Blocks tyrosinase enzyme to prevent melanin overproduction at the source
- Clinical Data: 79% of subjects showed improvement vs 61% with hydroquinone in split-face studies
- Results: Reduces post-acne marks up to 75-80% in 12 weeks of continuous use
- Safety: No reported cases of leukoderma or irritation common with hydroquinone
Salicylic Acid 1.1-1.7%Proven
Gold-standard BHA (Beta Hydroxy Acid) that penetrates deep into pores due to its oil-soluble nature, making it highly effective for acne-prone skin.
- Function: Exfoliates inside pores, dissolves sebum plugs, and reduces inflammation
- Anti-bacterial: Helps eliminate acne-causing bacteria
- Concentration: FDA-recognized OTC acne treatment range (0.5-2%)
Licochalcone A (Glycyrrhiza Inflata Root Extract)Promising
Potent anti-inflammatory compound derived from Chinese licorice root. A signature Eucerin ingredient known for soothing irritated skin.
- Action: Reduces redness and calms minor inflammations
- Prevention: Helps prevent new blemishes from forming
- Antioxidant: Protects skin from oxidative stress
Panthenol (Pro-Vitamin B5) 0.5-1.3%Proven
Deeply penetrating humectant that attracts and holds moisture while supporting skin barrier repair.
- Hydration: Humectant that draws moisture into deeper skin layers
- Barrier Support: Promotes production of skin lipids for stronger barrier
- Soothing: Reduces inflammation and supports wound healing
Glycerin 3.6-5.4%Proven
Classic humectant found naturally in skin. Studies show it may be even more effective than hyaluronic acid for hydration.
- Source: A 2016 study found glycerin more effective than AHAs and HA as a humectant
- Benefits: Antimicrobial and antiviral properties; supports skin barrier
18 ingredients
Aqua, Alcohol Denat., Glycerin, Tapioca Starch, Carbomer, Salicylic Acid, Isobutylamido Thiazolyl Resorcinol, Decylene Glycol, Glycyrrhiza Inflata Root Extract, Panthenol, Glucosylrutin, Isoquercitrin, Ammonium Acryloyldimethyltaurate/VP Copolymer, Pantolactone, Sodium Hydroxide, Trisodium EDTA, Citric Acid, Parfum
Where it fits in your routine
ROUTINEApply after cleansing on dry skin. Wait 1-2 minutes before layering moisturizer. Use SPF 30+ in the morning to protect marks from darkening.
How to use
HOW TO USECleanse Thoroughly
Start with clean, dry skin. We recommend Eucerin DermoPure Cleansing Gel for best results.
Dispense One Pump
Apply one full pump of serum to your fingertips. This amount is sufficient for the entire face.
Apply All Over Face
Gently spread across the entire face, avoiding the eye area. Do not apply to highly inflamed blemishes.
Follow with Care
AM: Apply DermoPure Protective Fluid SPF 30. PM: Apply DermoPure Mattifying Fluid or your preferred moisturizer.
Who is it for?
WHOPerfect for you if:
- You have persistent post-acne dark marks (PIH)
- You struggle with oily, blemish-prone skin
- You want to prevent new breakouts while fading old marks
- You need oil control with a matte finish
- You have fungal acne and need a safe formula
- You prefer clinically-proven, dermatologist-tested products
- You have combination to oily skin
Consider alternatives if:
- You have very dry or dehydrated skin (may need more moisture)
- You're pregnant/breastfeeding (consult doctor first)
- You're already using other Thiamidol products
- You have severe active cystic acne (see dermatologist)
- You're sensitive to alcohol in skincare
- You're under 12 years old
- You prefer fragrance-free products
Skin type compatibility
SKIN TYPESPerfect match! Lightweight, oil-free formula absorbs instantly. Sebum-regulating technology controls shine all day without over-drying.
Ideal for combination skin. Controls oil in T-zone while humectants (glycerin, panthenol) provide balanced hydration.
Designed specifically for this skin type. Non-comedogenic, non-acnegenic, anti-bacterial formula treats and prevents breakouts.
May feel too mattifying. Contains hydrating ingredients but the matte finish and alcohol content may not suit very dry skin. Layer with rich moisturizer.
Contains soothing Licochalcone A and Panthenol. May cause initial tingling from alcohol/salicylic acid. Patch test first if very reactive.
Results timeline
WEEK 12First Visible Changes
Pores appear refined and skin feels mattified. Some users may experience mild purging. Oil control becomes noticeable throughout the day.
70% noticed improved texturePost-Acne Marks Begin Fading
Clinical studies show significant reduction in melanin index scores. Fresh marks start to lighten noticeably. Fewer new breakouts appearing.
80% saw reduced marksSignificant Improvement
Continued fading of hyperpigmentation. Skin tone appears more even. Breakout frequency notably decreased.
85% reported clearer skinOptimal Results
Clinical trials show up to 75-80% reduction in post-acne marks. Skin appears significantly clearer and more even-toned. Best results when combined with SPF protection.
95% beat post-acne marks (with SPF)Ratings by platform
400+ REVIEWSPros & cons
BALANCEDPraised
- Patented Thiamidol clinically proven to outperform hydroquinone
- Triple-action: marks, blemishes, and shine in one product
- Fungal acne safe and non-comedogenic
- Fast-absorbing, lightweight, non-greasy texture
- Long-lasting matte finish controls oil
- Backed by extensive clinical research (120+ studies)
- Dermatologist recommended
- Affordable pharmacy pricing
Criticized
- Contains alcohol (can cause tingling or dryness)
- Contains fragrance (not suitable for fragrance-free seekers)
- Results take 8-12 weeks for significant improvement
- May pill under some products if not absorbed fully
- Not ideal for very dry skin types
- Cannot combine with other Thiamidol products
- Small 40ml bottle size
Budget-friendly alternatives (dupes)
DUPESDifferent active (azelaic acid vs Thiamidol) but similar benefits: reduces PIH, fights acne, safe for fungal acne. Grittier texture. No sebum-regulating technology.
Same salicylic acid concentration but lacks Thiamidol for hyperpigmentation. Better for pure acne/pore concerns. Fragrance-free. Different texture (liquid vs hydrogel).
Similar multi-action approach with niacinamide and LHA. Addresses PIH and blemishes but uses different brightening technology. No patented Thiamidol. More moisturizing texture.
Focuses on hyperpigmentation with tranexamic acid and niacinamide. No BHA for acne. Different mechanism than Thiamidol. Good for marks only, not active acne.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. No refrigeration required. Keep below 25°C / 77°F.
Hygienic airless pump bottle that dispenses precise amounts and protects formula from contamination.
Yes - 40ml is under the 100ml TSA/EU carry-on liquid limit. Pump bottle prevents spills.
Frequently asked questions
FAQUse with caution. This serum contains Salicylic Acid at 1.1-1.7% concentration. While topical salicylic acid under 2% is generally considered safe by ACOG (American College of Obstetricians and Gynecologists), it's best to consult your healthcare provider before use during pregnancy or breastfeeding. The product is not recommended for children under 12 years old.
Yes! This serum is fungal acne safe. The formula is oil-free and doesn't contain any ferments, problematic fatty acids, esters, or polysorbates that feed Malassezia yeast. It's been verified as safe for fungal acne by ingredient analysis databases like SkinSort.
This serum already contains BHA (Salicylic Acid), so avoid using additional BHA products in the same routine to prevent over-exfoliation. You can use vitamin C in the morning and this serum in the evening, or alternate days. For retinol, introduce slowly on alternate nights. Do NOT combine with other Thiamidol-containing products. Always introduce new actives gradually and watch for irritation.
This serum is ideal for oily, combination, and acne-prone skin types. It's specifically formulated for blemish-prone skin with post-acne marks. The sebum-regulating technology and matte finish make it perfect for those who struggle with excess shine. Dry skin types may find it too mattifying and should layer with a richer moisturizer.
Clinical studies show first visible results in 2 weeks, with continuous improvement over time. Oil control and improved skin texture are noticed first. Post-acne marks typically begin fading noticeably around week 4, with optimal results at 12 weeks (up to 75-80% reduction). Results are enhanced when used with SPF protection. Consistency is key - use twice daily for best results.
Apply after cleansing and toning, but before moisturizer. Use one pump on clean, dry skin morning and evening. In your AM routine, follow with moisturizer and SPF 30+ (Eucerin recommends their DermoPure Protective Fluid SPF 30). In your PM routine, follow with your preferred moisturizer or the DermoPure Mattifying Fluid.
No, this serum has a comedogenic rating of 0/5. It's clinically tested to be non-comedogenic (won't clog pores) and non-acnegenic (won't cause acne). The oil-free formula contains no pore-clogging ingredients. In fact, the salicylic acid actively works to unclog pores and prevent blackheads and whiteheads.
The serum has a PAO (Period After Opening) of 12 months. The 40ml bottle typically lasts 2-3 months with twice-daily use (one pump per application). The hygienic pump packaging helps preserve the formula by preventing air and bacteria contamination. Store in a cool, dry place away from direct sunlight.
Verdict: Eucerin DermoPure Triple Effect Serum stands out as one of the few products that effectively addresses post-acne marks with clinically-proven ingredients. The patented Thiamidol has been shown in over 120 studies to outperform hydroquinone without side effects, while the triple-action formula simultaneously tackles active breakouts and excess oil. It's ideal for oily, acne-prone skin with persistent dark marks. While the alcohol content and fragrance may deter some, the non-comedogenic, fungal-acne-safe formula and accessible pharmacy pricing make it a solid choice for those seeking dermatologist-backed results. For optimal results, pair with daily SPF protection and expect to see significant improvement within 8-12 weeks of consistent use.
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 |
Water
Solvent, Skin Conditioning
|
|
|
| 0 |
Alcohol Denat.
|
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|
|
| 0 |
Tapioca Starch
|
|
|
| 1 |
Carbomer
Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising, Gel Forming
|
|




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