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KOREAN PHARMACY

CENTELLIAN24 Madeca Micro Startoc Serum 50ml

A 50ml serum for the treatment slot of a routine, used after toner and before a cream on normal to combination skin.

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$42.50
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Suited to
Normal skinCombination skinDry skinOily skin
Helps with
A smoother looking surfaceEveryday treatmentDullnessA steady twice daily routine

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How it works

A serum sits between a toner and a cream in both texture and job: thinner than a moisturiser, heavier than water. It spreads as a thin film that turns from wet to slightly tacky in under a minute, and that tack is the cue to move on. Because it is a leave on layer it stays on the face under everything after it, unlike a rinse off step that leaves with the water. The reason it goes under a cream rather than over one is simple physics: a light fluid cannot sit on top of a heavy occlusive film. At 50ml this is a larger serum than most, which makes it a reasonable choice for someone who wants to use one twice a day without rationing.

Key benefits

  • What it is: serum, 50ml, used the treatment step after toner and before a moisturiser.
  • Texture: a light fluid that turns tacky and then settles.
  • Aimed at: a smoother looking surface, everyday treatment, dullness.
  • Original Korean Formula: the version sold on Korean shelves, not a US reformulation.

Key actives

Niacinamide

Niacinamide is one of the most widely used tone and texture ingredients in Korean formulas, and its presence on this row's own ingredient list means it is genuinely part of the build rather than a name-only claim on the box.

Centella Asiatica Leaf Extract

Centella Asiatica Leaf Extract is the calming botanical Korean skincare built an entire ingredient category around, and it is confirmed here on this row's own list rather than inferred from the brand's centella-forward branding.

Adenosine

Adenosine is a wrinkle-care ingredient recognized in Korean cosmetic regulation. It sits on this formula's own ingredient list, which is what separates a confirmed component from a name printed on the front of the box.

Asiaticoside

Asiaticoside is a triterpene compound, one of the centella-family actives Korean skincare uses for its calming reputation, and it is confirmed here on this row's own ingredient list rather than a marketing shorthand for it.

Asiatic Acid

Asiatic Acid is a triterpene compound, one of the centella-family actives Korean skincare uses for its calming reputation, and this row's own ingredient list names it directly rather than lumping it under a single umbrella claim.

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CENTELLIAN24 Madeca Micro Startoc Serum 50ml

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How to use

  1. Cleanse and tone, then apply this while the skin is still slightly damp so it spreads without dragging.
  2. Use one or two pumps for the whole face and press it in with flat palms rather than rubbing in circles.
  3. Wait until the surface feels tacky rather than wet, then put your moisturiser on top.
  4. Do not use it as your only layer on dry skin, since a light fluid left uncovered is the first thing to evaporate.

Worth knowing

  • Introduce it on its own for a week before adding another new treatment step.
  • Patch test on the jawline first if your skin reacts easily to something new.

Reviews

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We’re on gram!

Creators trying on authentic Korean skincare routines and products from us.

  • Rating a shelf of Dr. Althea products one by one.

    Jasmine Loo · YouTube

  • Two hydrating serums side by side, IUNIK and Dr. Althea.

    Kristin · YouTube

  • A walk through the Dr. Althea serum lineup and who each one suits.

    auraofmahmuda · YouTube

  • A blunt first take on the Dr. Althea range.

    Lexi Chang · YouTube

  • A first look at the viral 345 Relief Cream before buying.

    Shelley Nayak · YouTube

  • A first try of the Dr. Althea serum on camera.

    Hannah Ziad · YouTube

Korean-market original

A 50ml treatment serum for the step after toner, stocked in the Original Korean Formula.

Verify your unit when it arrives

Verify your unit when it arrives

Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.

Match the batch code on the box against the code printed on the bottle or tube itself; the two are stamped separately and should agree.

On the unit itself

  • The Korean-market barcode, unaltered from the retail package.
  • The manufacturer’s batch code, exactly as the maker printed it.

정품Genuine article, Korean-market stock

What professionals say

What professionals say

What skin-care professionals say about the key actives in this formula, quoted from the medical sources linked beside each.

  • Centella can make your skin appear more hydrated, plumper and healthier.

    Samantha Stein, PA-CDermatology physician assistant, Cleveland Clinic
  • Niacinamide helps reduce the appearance of pores in a few ways. By strengthening the skin barrier and improving elasticity, pores appear less noticeable and more even.

    Ashlyn YankeAesthetician, Cleveland Clinic

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