A' Clear Spot For Face Serum
A' Clear Spot For Face Serum
Product Description
Product overview
A scientifically formulated, alcohol-free acne treatment serum developed by the Dr.G Skin Science Research Center. Powered by Derma Clear Complex with succinic acid, niacinamide, and a triple-mint heartleaf blend, it gently controls sebum and soothes breakouts on both spot areas and the entire face without drying or irritating the skin.
Derma Clear Complex
Proprietary blend of succinic acid and active ingredients that gently removes excess sebum and dead skin cells to clear breakouts from the first sign.
Texture & feel
SENSORYDerma Clear Complex
Proprietary blend of succinic acid and active ingredients that gently removes excess sebum and dead skin cells to clear breakouts from the first sign.
3 Mint + Heartleaf Complex
Watermint, apple mint, and spearmint combined with Houttuynia Cordata (heartleaf) to calm inflamed skin and prevent future flare-ups.
Sebum & Moisture Balance
Controls oil production while delivering hydration through niacinamide, panthenol, and glycerin so skin stays balanced and never stripped.
Centella Asiatica Complex
Four isolated centella actives (asiatic acid, asiaticoside, madecassic acid, madecassoside) promote skin repair and reduce post-acne marks.
Safety & compatibility
SAFEContains Salix Alba (Willow) Bark Extract, a natural source of salicylates. While the concentration is low and topical, consult your healthcare provider before use during pregnancy or breastfeeding.
Contains Lactobacillus Ferment and Theobroma Cacao Seed Extract, which may feed malassezia yeast. Not recommended for those with active fungal acne / pityrosporum folliculitis.
Hypoallergenic tested and clinically verified for sensitive, acne-prone skin. Alcohol-free, fragrance-free, and formulated at a mild weakly acidic pH.
Oil-free, silicone-free formula with a comedogenic rating of 1/5. Very low risk of clogging pores or triggering new breakouts.
No active exfoliating acids at significant concentrations. Can be layered with retinol in the same routine, though introduce gradually to avoid irritation.
Niacinamide-based formula pairs well with vitamin C. Can be used alongside AHA/BHA products, but avoid layering directly to prevent over-exfoliation.
Ingredient breakdown
INGREDIENTSNiacinamide (Vitamin B3) ~4–5%Proven
A multitasking skincare superstar that regulates sebum production, brightens dark spots, strengthens the skin barrier by boosting ceramide synthesis, and reduces inflammation associated with acne and rosacea.
- Sebum Control: Studies show 2–5% niacinamide significantly reduces sebum excretion rate after 4 weeks of use.
- Barrier Repair: Increases ceramide and fatty acid levels in the stratum corneum for stronger, healthier skin.
- Brightening: Inhibits melanosome transfer to lighten post-inflammatory hyperpigmentation from acne.
Succinic Acid ActivePromising
A gentle organic acid that acts as a mild exfoliant and antimicrobial agent. Research shows it can inhibit the growth of Cutibacterium acnes (acne-causing bacteria) while softening skin texture and removing dead cells.
- Antibacterial: Demonstrated activity against C. acnes without the harshness of traditional acne acids.
- Exfoliation: Gently dissolves dead skin buildup to unclog pores and smooth skin texture.
- Sebum Regulation: Helps normalize excess oil production at the follicular level.
Centella Asiatica Complex 4 ActivesProven
Contains four purified centella actives: asiatic acid, asiaticoside, madecassic acid, and madecassoside. Collectively known as CICA, they are proven to accelerate wound healing, reduce inflammation, and stimulate collagen synthesis for scar repair.
- Wound Healing: Stimulates type I collagen synthesis to speed skin repair and reduce scarring.
- Anti-Inflammatory: Madecassoside inhibits NF-kB pathway activation, calming redness and swelling.
- Antioxidant: Protects skin cells from oxidative stress caused by environmental aggressors.
Houttuynia Cordata Extract ActivePromising
Also called heartleaf or chameleon plant, this botanical is rich in polyphenolic flavonoids (quercetin, quercitrin, hyperoside, rutin) that deliver anti-inflammatory, antibacterial, and antioxidant benefits for breakout-prone skin.
- Anti-Inflammatory: Quercetin and quercitrin reduce inflammatory cytokines associated with acne lesions.
- UV Defense: Quercitrin has been shown to reduce UVB-induced skin damage.
- Antibacterial: Exhibits broad-spectrum antimicrobial activity to help prevent breakouts.
Lactobacillus Ferment ActivePromising
A probiotic postbiotic ingredient with DNA repair enzyme properties. Supports the skin microbiome, delivers anti-inflammatory and antimicrobial benefits, and helps protect against environmental stressors.
- Microbiome Support: Helps restore healthy microbial diversity on the skin, which may reduce acne-causing bacteria.
- Anti-Inflammatory: At 5% concentration, shown to help reduce acne lesions; at 1%, improves skin sensitivity.
Panthenol (Pro-Vitamin B5) ActiveProven
A well-established humectant and skin-soothing ingredient that attracts moisture, strengthens the skin barrier by boosting lipid production, and calms irritation from harsh acne treatments or environmental factors.
- Hydration: Penetrates the skin and converts to pantothenic acid, enhancing moisture retention.
- Anti-Irritant: Reduces irritation caused by other active ingredients in the formulation.
- Barrier Support: Promotes lipid synthesis to maintain a healthy, resilient skin barrier.
30 ingredients
Water (Aqua/Eau), Pentylene Glycol, 2,3-Butanediol, Diethoxyethyl Succinate, Dimethyl Sulfone, Niacinamide, Lactobacillus Ferment, Ammonium Polyacryloyldimethyl Taurate, Glycerin, Panthenol, Succinic Acid, Tromethamine, Butylene Glycol, Dipotassium Glycyrrhizate, Allantoin, Stevia Rebaudiana Leaf/Stem Extract, 1,2-Hexanediol, Disodium EDTA, Dextrin, Theobroma Cacao (Cocoa) Seed Extract, Centella Asiatica Extract, Houttuynia Cordata Extract, Mentha Aquatica Extract, Mentha Suaveolens Leaf Extract, Mentha Viridis (Spearmint) Extract, Asiatic Acid, Asiaticoside, Madecassic Acid, Madecassoside, Salix Alba (Willow) Bark Extract
Where it fits in your routine
ROUTINEUse morning and evening after toner. Apply a thicker layer on active spots and a thin layer over the full face. Wait 30 seconds before layering next step.
How to use
HOW TO USECleanse & Tone
Start with a gentle cleanser and follow with your toner. Pat skin until slightly damp — the serum absorbs better on not-fully-dry skin.
Spot Application
Take a generous amount and apply a thicker layer directly onto active blemishes, early spots, or problem areas. Gently pat to help absorption.
Full-Face Application
Spread a thin, even layer across the entire face for overall sebum control and prevention. Gently pat until fully absorbed.
Follow Up
Once fully absorbed (about 30 seconds), continue with your moisturizer and sunscreen (AM). Use consistently morning and night for best results.
Who is it for?
WHOPerfect for you if:
- You have acne-prone skin and want a gentle, non-drying treatment
- You deal with excess sebum but also experience dry patches
- You prefer alcohol-free, fragrance-free formulas
- You want a serum that doubles as a spot treatment AND full-face treatment
- You have sensitive skin that reacts to harsh acne products like benzoyl peroxide
- You're looking for K-beauty acne care backed by dermatologist research
Consider alternatives if:
- You have fungal acne (malassezia) — contains ferment ingredients
- You need strong exfoliation (no high-concentration AHA/BHA)
- You want a deeply hydrating or cream-textured product
- You need aggressive cystic acne treatment (consider benzoyl peroxide or prescription retinoids)
- You are pregnant or breastfeeding (consult doctor first due to willow bark extract)
Skin type compatibility
SKIN TYPESLightweight gel absorbs instantly without adding shine. Succinic acid and niacinamide help control sebum production all day.
Balances oily T-zone while hydrating drier cheek areas. Non-sticky finish works well across different face zones.
Purpose-built for acne. Oil-free, non-comedogenic (1/5), and clinically tested on acne-prone skin. Targets both active spots and prevents new breakouts.
Hypoallergenic tested, fragrance-free, and alcohol-free. Patch test recommended for very reactive skin, but most sensitive types tolerate it well.
Provides some hydration via glycerin and panthenol but may not be enough on its own. Pair with a rich moisturizer for best results on dry skin.
Results timeline
MONTH 2–3Immediate Soothing & Comfort
Redness and irritation around active blemishes begin to calm. Skin feels hydrated and balanced without stickiness or tightness.
70% noticed calmer skinVisible Spot Reduction
Active breakouts start to flatten and decrease in size. Sebum production feels more controlled, especially in the T-zone area. Skin texture begins to smooth out.
60% saw reduced blemishesClearer, More Balanced Skin
Fewer new breakouts appear as the preventive ingredients take effect. Post-acne marks begin to lighten thanks to niacinamide and centella. Overall skin tone looks more even.
55% reported fewer new breakoutsLong-Term Clarity & Repair
Consistent use delivers noticeably clearer skin with reduced acne scarring. Skin barrier feels stronger and more resilient. Pores appear refined and less visible.
50% saw significant improvementRatings by platform
31+ REVIEWSPros & cons
BALANCEDPraised
- Visible results within a week for many users — breakouts calm quickly
- Completely alcohol-free and fragrance-free, ideal for sensitive acne skin
- Lightweight, non-sticky gel texture absorbs rapidly
- Versatile: works as both a spot treatment and full-face serum
- Dermatologist-developed by Gowoonsesang, Korea's largest skin clinic group
- Soothes irritation without causing dryness or flaking
- Clean ingredient list with no parabens, silicones, or sulfates
Criticized
- 45ml bottle feels small and runs out fast with twice-daily full-face use
- Not effective for severe cystic acne — works better on mild-to-moderate breakouts
- Contains ferment ingredients, not safe for fungal acne sufferers
- Product packaging and instructions primarily in Korean
- Can feel slightly sticky if too much product is applied
- Limited availability outside of K-beauty retailers
Budget-friendly alternatives (dupes)
DUPES
Similar acne-fighting approach with niacinamide and centella, plus BHA for deeper pore clearing. Slightly more exfoliating and a larger 40ml size at a lower price point. May be too strong for very sensitive skin.
More aggressive exfoliating approach using triple acids (AHA, BHA, PHA) with tea tree oil. Better for stubborn acne and textured skin, but notably harsher and not ideal for sensitive or reactive skin types.
Focuses heavily on soothing and calming with 80% heartleaf extract. More hydrating and less targeted for active acne. Better choice for those who prioritize calming redness over sebum control.
Comparison with competitors
SIDE-BY-SIDE
Storage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. Keep away from children. Avoid storing in high-humidity environments like bathrooms.
Tube-style squeeze packaging for hygienic dispensing and precise application
Yes — 45ml is well under the 100ml carry-on liquid limit
Frequently asked questions
FAQUse with caution. This serum contains Salix Alba (Willow) Bark Extract, which is a natural source of salicylates (related to salicylic acid). While the concentration is low and topical absorption is minimal, most dermatologists recommend avoiding salicylate-containing products during pregnancy and breastfeeding as a precaution. Always consult your OB-GYN or healthcare provider before adding this to your routine.
No, this serum is not considered fungal acne safe. It contains Lactobacillus Ferment (a fermented ingredient) and Theobroma Cacao (Cocoa) Seed Extract, both of which may potentially feed malassezia yeast and worsen pityrosporum folliculitis. If you have fungal acne, look for alternatives that are free from ferments, fatty acids, esters, and polysorbates.
Yes, with some precautions. The serum's niacinamide-based formula is generally compatible with retinol and vitamin C. You can use retinol at night and this serum in the morning, or alternate nights. For AHA/BHA products, avoid layering them directly on top of each other in the same step — use one in the AM and the other in the PM to prevent over-exfoliation. If you experience any tingling or irritation, reduce frequency of use.
This serum is best suited for oily, combination, and acne-prone skin types. It excels at controlling sebum production while providing lightweight hydration. It also works well for sensitive skin that reacts to harsh acne treatments, thanks to its alcohol-free, fragrance-free, hypoallergenic formula. Dry skin types may find it insufficient on its own and should pair it with a heavier moisturizer.
Many users report visible improvements within the first week, particularly with active spots becoming less inflamed and flatter. For overall skin clarity and prevention of new breakouts, expect 3–4 weeks of consistent twice-daily use. Full results including fading of post-acne marks and improved skin texture typically emerge around the 2–3 month mark with continued use.
Apply this serum as step 3 in your routine: after cleansing and toning, but before moisturizer and sunscreen. For spot treatment, apply a generous amount directly on blemishes. For full-face use, spread a thin layer over the entire face. Allow about 30 seconds for absorption before moving to the next step. Use both morning and evening for best results.
This serum has a very low comedogenic rating of 1 out of 5. It is oil-free, silicone-free, and does not contain known pore-clogging ingredients. The lightweight gel formula is specifically designed for acne-prone skin and has been clinically tested for suitability on breakout-prone complexions. It is highly unlikely to clog pores or trigger new acne.
The Period After Opening (PAO) is 12 months. Once opened, use within 12 months for optimal efficacy and safety. Store in a cool, dry place away from direct sunlight. The 45ml tube will typically last 4–6 weeks with twice-daily full-face use, or 2–3 months if used primarily as a spot treatment.
Verdict: The Dr.G A'Clear Spot For Face Serum is a thoughtfully formulated, dermatologist-developed acne serum that excels at gentle blemish care without compromising skin comfort. Its standout Derma Clear Complex with succinic acid offers a kinder alternative to harsh BHA/benzoyl peroxide treatments, making it ideal for sensitive, acne-prone skin. The alcohol-free, fragrance-free formula with niacinamide and centella provides solid sebum control and soothing benefits. However, it falls short for fungal acne sufferers (due to ferment ingredients), and the 45ml tube may not last long with full-face daily use. Best suited for those with mild-to-moderate acne who want effective, low-irritation K-beauty care.
Product Overview
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.
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.
Quick Product Notes
Paraben-Free
Paraben-Free
Understanding Parabens
Parabens are a large group of preservatives which are used to prevent bacteria growing in cosmetic formulations. There has been some healthy controversy surrounding them due to a few studies finding paraben presence in breast tumours and breast tissue. However, the majority of the scientific community have deemed these findings non-conclusive due to the limitations of these studies. There's still a lot of support for avoiding parabens following the better safe than sorry route. If you do we completely support you! If you are concerned about the health safety of parabens, then feel free to avoid them by looking out for the Paraben-Free icon. If not, don't worry about it - they do have had one of the longest safety records as preservatives!
Which Ingredients are classified as Paraben?
A product will be paraben-free if it does not contain any of the following parabens:
- Sodium Isobutylparaben
- Sodium Ethylparaben
- Sodium Butylparaben
- Propylparaben
- Isopropylparaben
- Isobutylparaben
- Sodium Propylparaben
- Butylparaben
- Ethylparaben
- Sodium Methylparaben
- Methylparaben
Sulfate-Free
Sulfate-Free
Understanding Sulfates
Sulfates are a large group of ingredients which act as cleansing agents in Cosmetics. They help loosen up the dirt and grime from your skin and hair to allow for water to wash it away with ease. However some sulfates are so good at their job, they can wash off your skin’s own natural oils that keep it moisturised and protected which can lead to dryness and irritation. Most people will find no issues with sulfate, however if you find your skin doesn't like sulfates then free feel to avoid them by looking out for the sulfate-free icon on Skincarisma.
Which ingredients are classified as sulfates?
We've taken the Sulfates which are considered more harsh for our Sulfate-Free status. A product will be Sulfate-Free if it does not contain any of the following Sulfates:
- TEA-Dodecylbenzenesulfonate
- Ammonium Laureth Sulfate
- Sodium Lauryl Sulfate
- PEG-15 Cocamine
- Sodium Laureth Sulfate
- Sodium Cocoyl Sarcosinate
- Sodium C14-16 Olefin Sulfonate
- Dioctyl Sodium Sulfosuccinate
- Ammonium Xylenesulfonate
- Ammonium Lauryl Sulfate
- Sodium Xylenesulfonate
- Sodium Myreth Sulfate
- Sodium Lauryl Sulfoacetate
Alcohol-Free
Alcohol-Free
Understanding Simple Alcohols
Alcohol ingredients are widely used in cosmetics and come in different types. For the most part alcohols are not problematic at all. However one type of alcohols, simple alcohols can be quite drying to the skin because it evaporates very quickly. This can cause irritation which can also lead to other skin complications. These alcohols should never be used alone on your skin, but combined with other cosmetic ingredients, they are normally without issue. However, for some people with sensitive and easily irritable skin, avoiding products with these simple alcohols may be beneficial. If you find your skin doesn't like these simple alcohols, then free feel to avoid them by looking out for the Alcohol-Free icon.
Which Ingredients are classified as Alcohol?
A product will be alcohol-free if it does not contain any of the following alcohol ingredients:
- SD Alcohol
- Alcohol Denat
- Isopropyl Alcohol
- Alcohol
Silicone-Free
Silicone-Free
Understanding Silicones
If you've ever used a skincare, makeup or beauty product that's made your skin look and feel smoother tempoarily - it's likely contained Silicone. They are a popular class of ingredients found in cosmetics due to their smooth, soft, easy-to-spread and smooth properties that help creates an artificial layer/barrier on top of skin or hair (commonly found in conditioners).
For the same reasons they are popularly used, they are also commonly avoided. Anecdotally, many individuals have reported that Silicones cause/excerbate breakouts, irritation, cause a feeling of skin being unable to breathe, cause clumping of cosmetic products and find it difficult to wash off. As a result, those who find them problematic are avoiding them and increasingly, cosmetic companies are avoiding them as well.
If you have had bad experiences with Silicones in the past, or suspect they are problematic then look out for the tick on the Silicone-free label.
Disclaimer
The Silicone-free label only includes the most common Silicone ingredients that have indentified been reported by individuals that could potentially cause issues.
These include: Amodimethicone, Behenoxy Dimethicone, Bis-Aminopropyl Dimethicone, Cetearyl Methicone, Cetyl Dimethicone, Cyclomethicone, Cyclopentasiloxane, Dimethicone, Dimethicone Copolyol, Dimethiconol, Methicone, Phenyl Trimethicone, Phenyl Trimethicone, Stearoxy Dimethicone, Stearyl Dimethicone, Trimethylsilylamodimethicone.
Note, that this does not include all ingredients part of the Silicone class of ingredients.
EU Allergen-Free
EU Allergen-Free
Understanding the Identified Contact Allergens
The EU's Scientific Committee on Consumer Safety (SCCS) has identified and established 26 cosmetic ingredients that are likely contact allergens (potential to cause skin allergies) as demonstrated in clinical or epidemiological studies. The EU's SCCS have recommend cosmetic companies to disclose them on the labels if used and in cases where the concentration exceeds 0.001% in leave-on products and 0.01% in rinse-off products, then they must be labelled.
Look out for the tick on the EU-Allergen free label to know your cosmetic is free from any of the 26 identified cosmetic ingredients.
For more information regarding the EU's Scientific Committee on Consumer Safety, please visit their official website.
Disclaimer
The EU Allergen Free label is for the 26 ingredients identified by the EU SCCS and products will be only flagged if a suspected ingredient is on it's ingredient list. It is possible for cosmetics to contain one of the suspect ingredients without it appearing on the ingredient list due to it not reaching the concentration threshold to disclose it and cosmetic manufacturers choice to not disclose it.
Also note, the EU Allergen Free label is not personalized for your own allergies you may have and it does not constitute as medical advice. For your specific case, always consult your medical professiona such as dermatologist, physician, pharmacist, or health care provider - please read our medical disclaimer for more information.
Fungal Acne (Molassezia) Safe
Fungal Acne (Molassezia) Safe
Understanding Fungal Acne (Pityrosporum Folliculitis/Malassezia Folliculitis)
Pityrosporum Folliculitis/Malassezia folliculitis or simply known as Fungal Acne is a persistent acne-like condition that commonly responds poorly to traditional acne-treating methods. Unlike most cases of Acne where bacteria is the culprit, Fungi is the culprit of Fungal Acne (Hence the name!). There are certain classes & groups of ingredients that have been shown to promote and feed the growth of the Fungal Acne, Fungi such as fatty acids, oils, esters, polysorbates and fermented ingredients.
For more information regarding Fungal Acne, please visit Simple Skincare Science (f.c) - #3 of our Recommend Skincare Resources for an amazing comprehensive guide!
Please Read: How to use the Fungal Acne (Malassezia) Label
At SkinCarisma, we've done our best to identify as many ingredients as possible but note the fungal-free label may not be 100% accurate due to the complexconditions and combination of ingredients that malezzeria can thrive on.
Additionally, products that may contain ingredients that have shown to feed Malassezia may not neccessarily exacerbate the condition due to concentration of ingredient used in the product, this information is simply not available on the products.
As a result, please note this is only an experimental label that can be best used to possible identify problematic products you have used in the past. It is in no way a perfect identifier nor a predictor in whether or not it will exacerbate or cause fungal acne. It will continue to be worked on as more information and research comes to light.
If you find any ingredients you believe should be included, please email us at snails@skincarisma.com.
Disclaimer
Due to the lack of substantial research into this area it is very likely there are other ingredients and class/groups of ingredients that could feed Fungal Acne which have not been indentified.
The Fungal-Safe label does not constitute as medical advice. For your specific case, always consult your medical professiona such as dermatologist, physician, pharmacist, or health care provider - please read our medical disclaimer for more information.
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.
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
Notable Effects & Ingredients
Anti-Aging from 4 ingredient(s):
Brightening from 2 ingredient(s):
Promotes Wound Healing from 7 ingredient(s):
Ache-fighting from 1 ingredient(s):
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.
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!
Ingredients Related to Skin Types
Dry Skin
Oily/Acne-Prone Skin
Sensitive Skin
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.
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.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 1 |
Pentylene Glycol
Solvent, Skin Conditioning
|
|
|
| 0 |
2,3-Butanediol
|
|
|
| 0 |
Diethoxyethyl Succinate
Solvent
|
|
|
| 1 |
Dimethyl Sulfone
Solvent, Viscosity Controlling, Viscosity Decreasing Agent
|
|