100% authentic Korean-market formulas

Free US shipping on orders of $100 or more. 100% authentic Korean-market formulas. Ships from our California warehouse, at your door in 3-5 days. Intact Korean batch codes on every unit.

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KOREAN PHARMACY

so natural Red Peel Tingle Serum 35ml

Glycolic acid is the second ingredient, straight after water, with sodium hydroxide fifth to bring the pH back up and lactic acid ninth. A 35ml acid serum, used at night.

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$37.50
  • Ships from our California warehouse
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Suited to
SensitiveDryNormalCombination
Helps with
Dull, rough surface textureRough texture on sensitised skinDehydration and tight-feeling skinA compromised, tight-feeling barrier

In stock. Ships from our California warehouse, dispatched within 2 business days

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  • Duties prepaid
  • 30-day returns
  • Free US shipping on orders of $100 or more
  • Dispatched within 2 business days

Key benefits

  • Glycolic Acid for surface-renewing AHA
  • Lactic Acid for gentle AHA
  • Sodium Hyaluronate for hydrating humectant
  • Concentrated texture built for a treatment step
  • Authentic Korean-market formula, sourced as the same version sold on Korean retail shelves
  • Layers cleanly after essence and before a moisturizer

Key actives

Glycolic Acidsurface-renewing AHA

Glycolic Acid is the smallest AHA molecule, included to lift away the dulling buildup of dead surface cells and leave the next skincare step able to sit closer to fresher-looking skin underneath.

Lactic Acidgentle AHA

Lactic Acid is a gentler AHA than glycolic, chosen for skin that wants surface renewal without the sting a stronger acid can bring, and it doubles as a humectant while it works.

Sodium Hyaluronatehydrating humectant

Sodium Hyaluronate is the humectant carrying the water-binding job in this formula, drawing moisture into the surface layers and giving the texture the cushioned, dewy slip that a Korean essence or serum is known for.

Phytosphingosinebarrier lipid

Phytosphingosine is a barrier lipid precursor included to support skin that feels compromised, tight or reactive after over-cleansing or over-exfoliating.

Ceramide NPbarrier lipid

Ceramide NP is one of the lipids that make up the skin's own barrier cement, included to help a compromised or over-exfoliated barrier feel less reactive and less prone to moisture loss through the day.

How to use

  1. Smooth two to three drops over cleansed and toned skin morning and evening, patting gently until absorbed before a moisturizer.

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so natural Red Peel Tingle Serum 35ml

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How it works

Red Peel Tingle Serum 35ml is so natural's concentrated serum (35ml). Glycolic Acid is the smallest AHA molecule, included to lift away the dulling buildup of dead surface cells and leave the next skincare step able to sit closer to fresher-looking skin underneath. Lactic Acid is a gentler AHA than glycolic, chosen for skin that wants surface renewal without the sting a stronger acid can bring, and it doubles as a humectant while it works. The concentrated texture sinks in without a greasy residue, leaving skin feeling smoothed and hydrated without a sticky after-feel. It sits in a Korean routine as the treatment step, best layered after essence and before a moisturizer.

Worth knowing

  • Introduce gradually alongside other acids to avoid overloading a routine that already exfoliates.
  • Introduce gradually if skin is new to acid exfoliation, watching for stinging on first use.
  • Patch test on the inner arm before a first full-face application if skin tends to react easily.
  • Store away from direct sunlight and high heat to keep the texture and scent stable over time.

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

Shop Red Peel Tingle Serum 35ml (35ml), the authentic Korean-market serum from so natural formulated with Glycolic Acid, sourced for the Korean market rather than a US-shelf reformulation.

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.

  • As we age, the glue that holds our skin cells together becomes denser, which slows down the natural cell turnover process.

    Samantha Stein, PA-CDermatology physician assistant, Cleveland Clinic
  • Phytosphingosine is considered a precursor to ceramides, which are the dominant fat that fills in the cracks between skin cells.

    Joshua Zeichner, MDDermatologist, director of cosmetic and clinical research, Mount Sinai Hospital, Healthline
1 more professional perspective
  • Ceramides are part fatty acid and part amino acid and are able to be the grout that keeps the building blocks of the skin together and functioning as a barrier between the inside and outside world.

    Amy Kassouf, MDDermatologist, Cleveland Clinic

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