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Blemish Care Serum

Blemish Care Serum

Product Description

Product overview

Made in Various INTERNATIONAL

Korea's beloved bestselling serum for over 12 years. This lightweight, fast-absorbing formula brightens uneven skin tone, fades dark spots and blemishes, and reveals a radiant, glass-skin glow using precious Bulgarian Rose Otto Oil and Arbutin.

Vegan Cruelty-Free Dermatologist Tested Hypoallergenic No Parabens No Silicones No Sulfates Fungal Acne Safe
Pregnancy
Caution
Fungal Acne
Yes
Comedogenic
1/5
Size
35ml / 70ml
Target
Dark Spots
Type
Serum
Key Active
Arbutin
Star Ingredient
Rose Otto Oil
Real reviews · YouTube Shorts
Why it's different

Bulgarian Rose Otto Oil

Nearly 3,000 hand-picked roses create just 1g of this precious oil. Rich in antioxidants and vitamins for skin brightening and soothing.

01

Texture & feel

SENSORY
Consistency
Lightweight Gel
Scent
Natural Rose
Absorption
Fast (~30 sec)
Finish
Dewy, Non-Sticky

Bulgarian Rose Otto Oil

Nearly 3,000 hand-picked roses create just 1g of this precious oil. Rich in antioxidants and vitamins for skin brightening and soothing.

Targets Dark Spots

Arbutin and Licorice Root work synergistically to fade hyperpigmentation, post-acne marks, and uneven skin tone.

Deep Hydration

Glycerin, Betaine, and Trehalose deliver lasting moisture without clogging pores or leaving a greasy residue.

Soothes Redness

Centella Asiatica, Calendula, and multiple botanical extracts calm irritation and strengthen the skin barrier.

02

Safety & compatibility

SAFE
Pregnancy & Breastfeeding

Contains Arbutin (a hydroquinone precursor). Consult your healthcare provider before use during pregnancy or breastfeeding.

Fungal Acne (Malassezia) Safe

Formula is free from ingredients that feed malassezia yeast. Safe for those prone to fungal acne.

Low Comedogenic Risk

Rated 1/5 on comedogenic scale. Lightweight formula unlikely to clog pores or cause breakouts.

Contains Plant-Fermented Alcohol

Derived from plant fermentation. Well-tolerated by most, but sensitive skin may want to patch test first.

Sensitive Skin Friendly

Dermatologist tested, hypoallergenic formula. No parabens, silicones, or sulfates.

Natural Rose Fragrance

Scent comes from real Bulgarian Rose Oil (Citronellol, Geraniol), not synthetic fragrance. Patch test if fragrance-sensitive.

03

Ingredient breakdown

INGREDIENTS

Bulgarian Rose Otto OilStar Ingredient

One of the rarest and most precious skincare ingredients. Nearly 3,000 hand-picked roses yield just 1 gram of pure oil. Rich in antioxidants and vitamins A, C, and E.

  • Brightening: Helps revitalize dull skin and create a natural radiant glow
  • Soothing: More calming than tea tree, helps reduce redness and irritation
  • Absorption: Ultra-fine micro-particles enhance penetration of other actives
The natural rose scent comes only from pure Bulgarian Rose Otto Oil, never artificial fragrance.

ArbutinProven

A natural brightening agent derived from bearberry plants. Works by inhibiting tyrosinase enzyme to reduce melanin production, helping to fade dark spots and even skin tone.

  • Clinical Evidence: Studies confirm arbutin is effective and safe for skin lightening
  • Gentler Alternative: Releases hydroquinone slowly, making it safer than direct hydroquinone use
  • Synergy: Works well with vitamin C, niacinamide, and other brightening agents
As a hydroquinone precursor, pregnant/breastfeeding individuals should consult a healthcare provider before use.

Centella Asiatica ExtractProven

Also known as Gotu Kola or Cica. Contains powerful centelloids (asiaticoside, madecassoside) that support skin healing and barrier function.

  • Anti-inflammatory: Reduces skin inflammation and calms redness
  • Barrier Support: Helps restore and strengthen skin barrier function
  • Collagen Support: May help support collagen production for firmer skin

Licorice Root Extract Dual SourceProven

A skincare superstar with powerful brightening and soothing properties. Contains glabridin, one of the most effective natural tyrosinase inhibitors.

  • Depigmenting: Glabridin inhibits tyrosinase to reduce melanin production
  • Anti-inflammatory: Glycyrrhizin compound helps soothe irritated skin
  • Antimicrobial: May help with acne-prone skin

Antioxidant Berry ComplexPromising

A blend of powerful antioxidant-rich fruit extracts including Blueberry, Cranberry, Acai, Sea Buckthorn, and Indian Gooseberry (Amla).

  • Free Radical Protection: Rich in polyphenols and anthocyanins
  • Vitamin C Source: Natural source of vitamins for skin brightening
  • Anti-aging: Helps protect against environmental damage

32 ingredients

Water, Rosa Damascena Flower Water, Glycerin, Alcohol (Plant Fermentation), Betaine, Arbutin, Trehalose, Rosa Damascena Flower Oil, Arctostaphylos Uva-Ursi Leaf Extract, Saxifraga Sarmentosa Root Extract, Hippophae Rhamnoides Fruit Extract, Euterpe Oleracea Fruit Extract, Vaccinium Angustifolium (Lowbush Blueberry) Extract, Phyllanthus Emblica Fruit Extract, Vaccinium Macrocarpon (Cranberry) Fruit Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Houttuynia Cordata Extract, Xanthan Gum, Allantoin, Panthenol, Adansonia Digitata Leaf Extract, Castanea Crenata Shell Extract, Salix Alba (Willow) Bark Extract, Centella Asiatica Extract, Butylene Glycol, 1,2-Hexanediol, Calendula Officinalis Flower Extract, Scutellaria Baicalensis Root Extract, Paeonia Suffruticosa Root Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Citronellol*, Geraniol*

*Naturally occurring in Bulgarian Rose Oil

FREE FROM: Parabens, Silicones, Sulfates, Mineral Oil, Artificial Fragrance, PEGs, Formaldehyde, Phthalates, Triclosan, 1,300+ EU-banned ingredients
04

Where it fits in your routine

ROUTINE
1
Cleanser
2
Toner
3
This Serum
4
Moisturizer
5
Sunscreen (AM)

Apply after cleansing and toning, before heavier serums or moisturizer. Use morning and night for best results. Always follow with SPF during the day.

05

How to use

HOW TO USE
1

Cleanse & Tone

Start with a clean face. Apply your regular toner and let it absorb.

2

Dispense 1-2 Pumps

Pump a small amount onto your fingertips. A little goes a long way with this concentrated formula.

3

Apply to Face & Neck

Gently pat and press the serum into skin, focusing on areas with dark spots or uneven tone.

4

Follow with Moisturizer

Once absorbed (~30 seconds), seal in with your favorite moisturizer. In the morning, always finish with sunscreen SPF 30+.

06

Who is it for?

WHO

Perfect for you if:

  • You have dark spots, hyperpigmentation, or post-acne marks
  • You want to brighten and even out your skin tone
  • You have sensitive or blemish-prone skin
  • You prefer gentle, plant-based formulas
  • You love natural rose scent in skincare
  • You're looking for a K-beauty bestseller with proven results

Consider alternatives if:

  • You're pregnant or breastfeeding (consult doctor first)
  • You're sensitive to any form of alcohol in skincare
  • You dislike rose fragrance or prefer fragrance-free
  • You need immediate overnight results
  • You're on a very tight budget (more affordable options exist)
07

Skin type compatibility

SKIN TYPES
Oily Skin
Excellent

Lightweight gel absorbs quickly without adding shine. Won't clog pores or feel greasy.

Dry Skin
Good

Provides hydration from Glycerin, Betaine, and Trehalose. Layer with a richer moisturizer on top.

Combination Skin
Excellent

Balances well across different face zones. Hydrates dry areas without overwhelming oily zones.

Sensitive Skin
Good

Dermatologist-tested and hypoallergenic. Contains soothing Centella and Calendula. Patch test recommended.

Acne-Prone Skin
Excellent

Non-comedogenic (1/5), fungal acne safe. Helps fade post-acne marks without causing new breakouts.

08

Results timeline

WEEK 8-12
Week 1-2

Hydration & Glow

Skin feels more hydrated and looks more radiant. Rose scent provides a spa-like experience during application.

85% noticed improved hydration
Week 2-4

Skin Tone Improvement

Complexion begins to look brighter and more even. Some users report calmer, less red skin.

70% noticed brighter skin
Week 4-8

Dark Spots Start Fading

Post-acne marks and hyperpigmentation visibly begin to fade with consistent twice-daily use.

65% noticed fading dark spots
Week 8-12

Significant Improvement

Continued fading of stubborn dark spots. Skin texture feels smoother and more refined. Best results with consistent use.

80% satisfied with overall results
09

Ratings by platform

1K+ REVIEWS
Amazon
4.3
Rating
500+
Reviews
Main complaint: Price point higher than drugstore alternatives
YesStyle
4.5
Rating
200+
Reviews
Main complaint: Takes time to see visible results (4+ weeks)
Stylevana
4.6
Rating
150+
Reviews
Main complaint: Strong rose scent may not suit everyone
Picky App
4.7
Rating
300+
Reviews
Main complaint: Contains alcohol (though well-tolerated by most)
10

Pros & cons

BALANCED

Praised

  • K-beauty bestseller for 12+ years with proven track record
  • Luxurious natural rose scent from real Bulgarian Rose Oil
  • Lightweight, fast-absorbing gel texture
  • Effectively fades dark spots and evens skin tone
  • Gentle enough for sensitive and acne-prone skin
  • Vegan, cruelty-free, and dermatologist tested
  • Fungal acne safe formula
  • Beautiful glass skin finish

Criticized

  • Higher price point compared to drugstore alternatives
  • Results take 4-8 weeks of consistent use
  • Contains plant-fermented alcohol (may concern some)
  • Strong rose scent not suitable for fragrance-sensitive users
  • Small bottle size (35ml) may not last long
  • Not recommended for pregnancy without doctor consultation
11

Budget-friendly alternatives (dupes)

DUPES
85% Match
Alpha Arbutin 2% + HA
$11.50
Budget Pick

Simpler formula with 2% alpha arbutin + hyaluronic acid. Fragrance-free, no botanical extracts. Equally effective for brightening but lacks the luxurious rose experience and soothing botanicals.

80% Match
The Alpha-Arbutin 2 Discoloration Care Serum
$25.00
Similar Price

More complex formula with 2% alpha arbutin + tranexamic acid + niacinamide + glutathione. Clinically tested. Larger 50ml size. No rose fragrance, more clinical approach to brightening.

70% Match
Glow Serum: Propolis + Niacinamide
$17.00
Budget Pick

Different approach using propolis and niacinamide instead of arbutin. Great for glow and hydration. No arbutin but effective for overall brightening. Popular K-beauty alternative.

12

Comparison with competitors

SIDE-BY-SIDE
Alpha Arbutin 2% + HA
Key Active Alpha Arbutin 2%
Size 30ml
Fragrance Fragrance-Free
Fungal Acne Safe No (contains PEG-40)
Best For Budget-Conscious
The Alpha-Arbutin 2 Discoloration Care Serum
Key Active Arbutin + Tranexamic + Niacinamide
Size 50ml
Fragrance Fragrance-Free
Fungal Acne Safe No
Best For Stubborn Pigmentation
13

Storage & shelf life

12 MONTHS
Period After Opening (PAO)

12 months after opening

Storage

Store in a cool, dry place away from direct sunlight. No refrigeration required.

Packaging

Airless pump bottle ensures hygienic dispensing and protects formula from oxidation.

Travel Friendly

Yes, 35ml size is under 100ml TSA carry-on limit.

13

Frequently asked questions

FAQ

The serum contains Arbutin, which is a hydroquinone precursor. While Arbutin is generally considered gentler than hydroquinone, there isn't enough research on its safety during pregnancy and breastfeeding. We recommend consulting with your healthcare provider before use. Safer alternatives during pregnancy include vitamin C, azelaic acid, or niacinamide-based serums.

Yes! According to ingredient analysis databases like SkinSort, this serum is fungal acne (malassezia) safe. The formula is free from ferments, fatty acids, esters, and polysorbates that typically feed malassezia yeast. It's a great brightening option for those dealing with fungal acne.

Yes, Arbutin is a gentle active that plays well with most other ingredients. You can use it with vitamin C (for enhanced brightening), niacinamide, hyaluronic acid, and peptides. When using with retinol or exfoliating acids (AHA/BHA), introduce slowly to avoid over-exfoliation. Consider using acids in the evening and this serum in the morning, or alternate nights.

This serum works well for all skin types, but is especially excellent for oily, combination, and acne-prone skin due to its lightweight gel texture and non-comedogenic formula. It's also great for sensitive skin thanks to its dermatologist-tested, hypoallergenic formula with soothing Centella and Calendula extracts. Dry skin types should follow with a richer moisturizer.

Most users notice improved hydration and glow within the first 1-2 weeks. Visible brightening and more even skin tone typically appear around weeks 2-4. For significant fading of dark spots and hyperpigmentation, expect 4-8 weeks of consistent twice-daily use. Stubborn pigmentation may take 8-12 weeks. Results vary based on skin type and the severity of pigmentation.

Apply after cleansing and toning, before heavier serums or moisturizer. The general rule is thinnest to thickest texture. Morning: Cleanser → Toner → This Serum → Moisturizer → Sunscreen. Evening: Cleanser → Toner → This Serum → (Treatment/Retinol if using) → Moisturizer. Can be used both AM and PM for best results.

No, this serum has a low comedogenic rating of 1/5, meaning it's very unlikely to clog pores. The lightweight gel formula is specifically designed to absorb quickly without leaving residue. It's oil-free, silicone-free, and fungal acne safe—making it an excellent choice for acne-prone and oily skin types.

The Period After Opening (PAO) is 12 months. The airless pump packaging helps protect the formula from oxidation and contamination, extending its shelf life. Store in a cool, dry place away from direct sunlight. With twice-daily use, the 35ml bottle typically lasts 2-3 months.

— Skincarisma verdict
4.5 / 5 ★★★★★

Verdict: The isoi Blemish Care Up Serum is a premium K-beauty brightening serum that has earned its bestseller status over 12+ years. The luxurious Bulgarian Rose Otto Oil delivers both effective results and a spa-like sensory experience. While pricier than drugstore alternatives like The Ordinary, you're paying for a more elegant formula with soothing botanicals, fungal acne safety, and a dermatologist-tested formulation.Best for: Those with sensitive, acne-prone, or combination skin who want effective brightening without harsh ingredients, and don't mind the natural rose scent. For those seeking faster, more aggressive brightening or on a tight budget, consider The Ordinary or COSRX alternatives.

Product Overview

question
lightbulb 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.

muscle 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.

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Quick Product Notes

Click on icons for more information
question
lightbulb 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.

muscle 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

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Notable Effects & Ingredients

anti-aging Anti-Aging from 1 ingredient(s):
Centella Asiatica Extract
brightening Brightening from 2 ingredient(s):
Glycerin Arbutin
wound Promotes Wound Healing from 5 ingredient(s):
Glycerin Arbutin Allantoin Panthenol Centella Asiatica Extract
question
lightbulb 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.

muscle 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!

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Ingredients Related to Skin Types

Click on icons for more information
dry-skin Dry Skin
4
oily-skin Oily/Acne-Prone Skin
1
sensitive-skin Sensitive Skin
1
question
lightbulb 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.

muscle 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.

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Ingredient Safety Breakdown

EWG Health Ratings
Low risk
Medium risk
High risk
Unknown risk
61% 38%

Product ingredient list

Showing first 5 of 31 ingredients
EWG CIR Ingredient Name & Cosmetic Functions Notes
1 Unknown
Water
Solvent, Skin Conditioning
1 Unknown
Rosa Damascena Flower Water
Masking, Skin Conditioning, Skin Protecting
2 A
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
brightening Brightening
Promotes Wound Healing
Hydrating
0 Unknown
Alcohol
Antimicrobial, Astringent, Masking, Solvent
1 B
Betaine
Skin Conditioning, Humectant, Viscosity Controlling, Antistatic Agent, Hair Conditioning
Hydrating
Irritation
Dark Spots
VIEW ALL INGREDIENTS