Magazine
Nº 01 — Retail webbook · Fall 2026

EGF Blue Youth Activating Drop

Formerly Midnight Blue Youth Activating Drop · 50 mL
Calm in 3 minutes. Clearer-looking marks in 4 weeks.
South Korea flagFormulated & made in KoreaUnited States flagStocked in California
Made for your clients

Who it's for, and what they'll see.

Flushes easilyVisibly calmer in about 3 minutesHeat, weather, a long day3 minto visibly calmer skin
Fresh from a facialA calming first step before they leave the chairAfter exfoliation or extractions3 minin-chair demo
Marks after breakoutsMarks look lighter in 2–4 weeksFlat, lingering spots+23.2%post-blemish marks, 4 weeks
First fine lines, 30+Peptide care for early signs of agingLess bounce around the eyes10 ppmEGF + FGF each
Oily, hates heavy layersWater-light, gone in secondsPills or breaks out under rich serums5.5pH · no added fragrance

Marks: ProbeM Skin Research Center, 2025–26, 20 adults, as shown on klairs.com. 3-minute calming per the Dear, Klairs product description. Results vary.

For spas, salons & boutiques

Easy to demo. Easy to retail.

3 minIn-chair demoThree drops after cleansing. Clients see calmer skin before they leave.
7Tested seven waysIrritation, sensitive-skin, non-comedogenic and soothing tests, plus 4.7★ from 526 reviews.
0Fits a clean menuNo added fragrance or essential oils. Vegan formula, PETA cruelty-free, pH 5.5.
1M+Clients already know itA top-5 Klairs bestseller worldwide, with 20 creator videos on TikTok.
$39.99One hero SKUA 50 mL bottle at $39.99 MSRP, with a free-standing story your team can tell in one line.
South Korea flagFormulated & made in KoreaThe EGF serum K-beauty shoppers already search for.
United States flagStocked in CaliforniaReady for US retail, no import wait.
Dear, Klairs
About Dear, Klairs

Respect your sensitivity.

Since 2010, Dear, Klairs has made minimal, gentle skincare that helps sensitive skin find its balance, instead of trying to change it.

Formulated for sensitivityEvery formula is primary-irritation tested on sensitive skin.
Balance is our natureFunctional care that goes beyond soothing, for every kind of sensitive skin.
Clean in every stepVegan formulas, PETA cruelty-free, FSC paper and PCR packaging.
PETA Cruelty-FreeThe Vegan SocietyKorea Agency of Vegan Certification
Dear, Klairs worldwide

Trusted on shelves in 80+ countries.

80+countries
5,400+online & offline stores
2010founded in Seoul
Olive Young
Amazon
TikTok Shop
Walmart
Soko Glam
YesStyle
Million sellers
8MSupple Preparation Unscented Toner
4MFreshly Juiced Vitamin Drop
2MMidnight Blue Calming Cream
1M+EGF Blue Youth Activating Drop
Brand timeline
2010Dear, Klairs is born in Seoul
2020–21PETA and The Vegan Society certified
2024'Open Your Sensitivity' pop-up, Seongsu
2026Seoul Awards Beauty Winner · Sensitive Studio opens

Units distributed worldwide, as reported by Dear, Klairs.

Water-light.

Closer to water than to a serum. It absorbs in seconds, so it goes on first, right after cleansing.

The formula

Four actives in a water-light drop.

The blue comes from guaiazulene, a naturally derived compound best known from chamomile. No colorant is added, so the shade can shift slightly from batch to batch without any change in quality.

10 ppmEGFsh-Oligopeptide-1

Signal peptide at the heart of the formula. Supports the look of firm, resilient skin.

10 ppmbFGFsh-Polypeptide-1

Second growth-factor peptide paired with EGF for density and bounce.

1,000 ppmGuaiazuleneGuaiazulene

Naturally derived blue compound. Comforts skin that looks flushed.

ListedAdenosineAdenosine

Well-studied firming ingredient that rounds out the peptide pair.

No added fragrance (no fragrance or essential oils listed)Ethanol-freeSilicone-oil-freeNo added colorantsVegan formulaCruelty-free
Tested & proven

Tested, then proven.

Only results Dear, Klairs has published. Tested seven ways, from sensitive-skin irritation to post-blemish marks.

3 min
after application
Calmervisibly calmer-looking skin
2 weeks
of twice-daily use
+14.8%post-blemish marks
4 weeks
of twice-daily use
+23.2%post-blemish marks
7 tests
listed by Dear, Klairs
✓primary irritation, sensitive skin
✓non-comedogenic

Post-blemish result: ProbeM Skin Research Center, Dec 2025–Jan 2026, 20 participants aged 20–40, as shown on klairs.com. Individual results vary.

3 min

From stressed to visibly calmer in about three minutes, straight after cleansing.

Customer reviews

They come back for another bottle.

4.7
★★★★★526 reviews on klairs.com

★★★★★“This made my skin super soft, smooth and glowing. Now I feel like I can't go a day without it.”Verified buyer · Mar 2026

★★★★★“The OG of EGF serums. It's great for sensitive skin.”Verified buyer · Apr 2025

★★★★★“This is my holy grail product. I was really sad when it was out of stock for a while.”Verified buyer · Jul 2025

★★★★★“Amazing serum, I got 3. Light, moisturising, softens skin.”Verified buyer · Mar 2025

★★★★★“It sinks into my oily skin effortlessly. It feels lightweight, but very hydrating.”Verified buyer · Aug 2024

★★★★★“I have very sensitive skin and it doesn't cause any irritation at all.”Verified buyer · Jul 2023

★★★★★“It's hydrating and absorbs into the skin quickly. I love its calming effect.”Verified buyer · Sep 2023

★★★★★“This youth activating drop really works at keeping facial skin soft, smooth, and young-looking.”Verified buyer · Dec 2023

★★★★★“This may feel like it's not doing something but deep down it is! Would definitely repurchase.”Verified buyer · Aug 2024

★★★★★“My skin feels more hydrated, smoother, and healthier. The texture is lightweight and doesn't feel sticky.”Verified buyer · Aug 2026

4.7klairs.com · 526 reviews
4.4Amazon US · 1,453 ratings · 3K+ bought last month
4.7TikTok Shop · 422 reviews · 6,745 sold
4.7Walmart · 334 reviews
96.8%YesStyle · positive · 8,114 ratings
4.7Olive Young Global · 45 reviews

Verified-buyer reviews from klairs.com (Loox), quoted as written. Reviewer names withheld.

Social proof

Creators film it because it works on camera.

20creator videos on the Blue Drop
2,354creators in the Klairs program
6,745sold on TikTok Shop
4.7★TikTok Shop, 422 reviews
klairs-creators.com/videos
Klairs Creator Video Library
klairs-creators.com
Klairs Creator Program
Vivian Yun creator video
Vivian YunReviewing the #1 serum at Olive Young
Song Of Skin creator video
Song Of SkinThe most popular recovery serum in Korea
Song Of Skin creator video
Song Of SkinWhy I use EGF for dark spots
Song Of Skin creator video
Song Of SkinCalm first, then repair
Keeyah The Creator creator video
Keeyah The CreatorI found the exact EGF serum I needed
Kelsi Campbell creator video
Kelsi CampbellEveryone's talking about this Korean serum
kimberly78raern creator video
kimberly78raernSo excited to finally have this growth factor
Hillary · Boston Creator creator video
Hillary · Boston CreatorFor acne marks that take long to fade
Loren Rosko creator video
Loren RoskoKlairs EGF serum 50 mL
Jenny Nguyen creator video
Jenny NguyenNow I don't skip a day
Shannon Ur Estie Bestie creator video
Shannon Ur Estie BestieWhen your barrier needs repair
Grace May creator video
Grace MayWhat I use when my skin acts up

Creator Video Library, klairs-creators.com, as of Sep 2026. TikTok Shop figures as shown on the listing, Sep 28, 2026. Creator posts as published; captions shortened. Videos live in the Klairs Creator Video Library.

Milestones

A bestseller with receipts.

BEST-SELLING PRODUCTMILLION SELLER1M
1M+ bottles soldWorldwide, as of Apr 2026
Beauty Winner2026 Seoul Awards
No.1 skincare rankingOlive Young · Apr 7, 2024
No.1 real-time sales, serumOlive Young · Apr 7, 2025
Best of K-BeautySoko Glam · 2024
#5
Global bestsellerDear, Klairs · Mar 2025–Feb 2026

Olive Young rankings are dated snapshots reported by Dear, Klairs, not Olive Young Awards.

50 mL vs 20 mL value
Sizes & value

Lead with the 50 mL.

At list price the 50 mL costs $0.80 per mL against $1.50 for the 20 mL, 47% less per mL.

SizeMSRPPer unitSKUUPC
50 mL · 1.69 fl oz$39.99$0.80/mLDK102218809572894466
20 mL · 0.67 fl oz$29.99$1.50/mLDK200098809115023681
10 mL · 0.33 fl oz$12.99$1.30/mLDK102388809572895029

Shelf life 36 months · use within 6 months of opening · Made in Korea

50 mL carton
50 mL carton
20 mL carton with amber glass dropper
20 mL carton with amber glass dropper
On the shelf

What your client takes home.

CartonKlairs blue, with the EGF 10 ppm label front and center
BottleAmber glass with dropper
On packNon-Comedogenic Tested · For Sensitive Skin
Sizes50 mL / 1.69 fl oz · 20 mL / 0.67 fl oz
The Blue Line

Irritation relief, barrier repair.

Every Blue Line product shares guaiazulene's calm. Stock the drop as the hero, then build the shelf around it.

Midnight Blue Calming CreamMidnight Blue Calming Cream

Cooling gel cream for skin that looks flushed.

Guaiazulene · Centella
EGF Blue Calming Toner PadEGF Blue Calming Toner Pad

Wipe or mask. Cools and smooths rough texture.

Centella · Hyaluronic acid
Blue EGF Calming MistBlue EGF Calming Mist

Bi-phase cooling mist for face and body.

EGF + FGF · Guaiazulene
Blue EGF Intensive Pro CreamBlue EGF Intensive Pro Cream

Rich barrier cream that seals the drop in.

EGF · Panthenol
Midnight Blue Clearing Water CreamMidnight Blue Clearing Water Cream

Weightless blue gel for oily, overheated-looking skin.

Niacinamide · Guaiazulene
Blue Caffeine Full Cover Eye PatchBlue Caffeine Full Cover Eye Patch

360° cooling hydrogel for eyes and smile lines.

Caffeine · Niacinamide 2%

Three routines that sell the second item.

Calm a flare-up
+
Blue Drop + Midnight Blue Calming Cream

Redness relief in 3 minutes, then a cooling gel seal.

Firm & repair
+
Blue EGF Duo

Blue Drop 50 mL + Blue EGF Intensive Pro Cream. Available as a set.

Full cool-down ritual
++
Blue EGF Trio

Calming Mist, Blue Drop and Pro Cream. Available as a set.

Content kit

Eleven images, ready for your PDP.

2000 × 2000 px, cleared for retailer product pages.

Shot in 4K. Yours to use.

34 product and texture clips, 3840 × 2160. Approved buyers can request the originals through b2b.klairs-creators.com.

Dropper & blue pool
Single drop
Shelf drip
Pour to pool
Copy & facts

Everything for your listing.

Retail copy
Product name
Dear, Klairs EGF Blue Youth Activating Drop, 50 mL (1.69 fl oz), formerly Midnight Blue Youth Activating Drop
Short description
A watery blue first serum with 10 ppm EGF and FGF peptides, 1,000 ppm guaiazulene and adenosine. Calms visibly stressed skin in minutes and helps post-blemish marks look lighter over 4 weeks.
Key benefits
  • Visibly calmer-looking skin in about 3 minutes.
  • Post-blemish marks improved 23.21% after 4 weeks (ProbeM Skin Research Center, 20 participants).
  • Water-light first step with 10 ppm EGF + FGF, 1,000 ppm guaiazulene and adenosine.
  • Tested for primary irritation on sensitive skin and for non-comedogenicity.
  • No added fragrance or essential oils. Vegan formula, cruelty-free. pH 5.5.
Ingredients
Water, Butylene Glycol, sh-Oligopeptide-1, sh-Polypeptide-1, Vaccinium Angustifolium (Blueberry) Fruit Extract, Lecithin, Sorbitan Sesquioleate, 1,2-Hexanediol, Caprylyl Glycol, PEG-60 Hydrogenated Castor Oil, Glycerin, Chlorphenesin, Guaiazulene, Ethylhexylglycerin, Adenosine
Claims ledger
ApprovedVisibly calmer in about 3 minutesDear, Klairs product description (klairs.com)
ApprovedPost-blemish marks +23.21% at 4 weeksProbeM, n=20 — shown on klairs.com
ApprovedNon-comedogenic tested · for sensitive skinOn-pack; klairscosmetics.com test list
Approved10 ppm EGFOn-pack
ApprovedNo added fragrance · vegan formula · cruelty-freeINCI; brand certification
With dateNo.1 in Olive Young skincare rankingAlways with the date: Apr 7, 2024. A ranking snapshot, not an award.
With date1M+ bottles sold worldwideBrand-reported, as of Apr 2026
With dateSoko Glam Best of K-BeautyAlways with the year: 2024
Testing & sources
  • ProbeM Skin Research Center: post-blemish pigmentation, Dec 2025–Jan 2026, 20 participants aged 20–40 (shown on klairs.com).
  • Tests listed by Dear, Klairs for this formula: primary skin irritation, primary irritation on sensitive skin, non-comedogenicity, anti-aging, soothing, collagen synthesis assay, post-blemish pigmentation (klairscosmetics.com).
US spot, 15 seconds
Dear, Klairs Wholesale

Respect your sensitivity.

Case-pack ordering, trade pricing and live stock for approved US buyers.

Apply for wholesale →Preview the catalog

Outside the US: wishtrade.co.kr