Where does this hair treatment go in my routine?

After shampooing, on hair towelled to damp rather than dripping. Anything thinner than a hair treatment goes on before it, and anything richer goes on after. If you are adding it to a routine you already like, give it a week on its own first, so what you see is the Saccharomyces Ferment Filtrate and not three changes at once.

Is this the Korean-market hair treatment or a US version?

The Korean-market one, Saccharomyces Ferment Filtrate and all. We match this hair treatment to its Korean barcode before it reaches the shelf, which is the check that tells you which market release you are holding.

Does this hair treatment contain fragrance?

Yes. The ingredient list names Benzyl Salicylate, Fragrance, Hexyl Cinnamal and Limonene. They sit on the panel printed on this page, so you can read the position for yourself before you buy. If fragrance components are something you avoid, this hair treatment is not the one.

What else is on the list besides Saccharomyces Ferment Filtrate?

Hydrolyzed Corn Protein, Hydrolyzed Soy Protein and Hydrolyzed Wheat Protein. The order they are printed in on this hair treatment's panel is the order on the box, so you can see where Saccharomyces Ferment Filtrate sits relative to them. Further down the same panel: Rubus Idaeus (Raspberry) Fruit Extract, Lavandula Angustifolia (Lavender) Extract and Melaleuca Alternifolia (Tea Tree) Leaf Extract.

A'PIEU

RASPBERRY HAIR VINEGAR Refill 400ml

Name: A'PIEU RASPBERRY HAIR VINEGAR Refill 400ml
Brand: A'PIEU
SKU: 4754225147
Price: 15.0 USD
Availability: InStock

A'PIEU RASPBERRY HAIR VINEGAR Refill is a 400ml hair treatment with Saccharomyces Ferment Filtrate, used after shampooing, on hair towelled to damp rather than dripping.

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$15.00

400 ml

$3.75 per 100 ml

Korean-market formula
Ships from California or direct from Korea
Korean barcode and batch code intact

Suited to: Normal skinDry or dehydrated skinCombination skinSensitized or easily reactive skin

Helps with: Everyday hydrationA layered Korean routineDullness or uneven texture

In stock. Arrives in 3 to 7 business days

You’re $100.00 away from free US shipping.

30-day returns
Free US shipping on orders of $100 or more
Tracked delivery to your door

Verified authentic Shipping and returns

How it works

The RASPBERRY HAIR VINEGAR Refill is a 400ml hair treatment, used after shampooing, on hair towelled to damp rather than dripping. The ferment it is built around is Saccharomyces Ferment Filtrate, named eighth on its own ingredient list. The same list carries Hydrolyzed Corn Protein, Hydrolyzed Soy Protein and Hydrolyzed Wheat Protein, so the ferment is not the only thing on it worth naming. How much of the Saccharomyces Ferment Filtrate stays on the skin, and for how long, is decided by the hair treatment format rather than by the list alone. This is the Original Korean Formula, the hair treatment A'PIEU sells in Korea, Saccharomyces Ferment Filtrate and all.

Key benefits

Saccharomyces Ferment Filtrate, the ferment this hair treatment is built around
Hydrolyzed Corn Protein, Hydrolyzed Soy Protein and Hydrolyzed Wheat Protein on the same list, proteins
Rubus Idaeus (Raspberry) Fruit Extract on the same list, a plant extract
Lavandula Angustifolia (Lavender) Extract and Melaleuca Alternifolia (Tea Tree) Leaf Extract further down the same list
Rosmarinus Officinalis (Rosemary) Leaf Extract further down the same list
Saccharomyces Ferment Filtrate named eighth on the manufacturer list printed on this page

How to use

Use this product AM and/or PM, as the its place in a routine. Pat or smooth it on rather than rubbing, and give it a moment to settle before layering the next step.

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29 of 32 explained

Water solvent: Water is the base almost every serum, toner and cream is built on. It dissolves the water-loving ingredients and sets how light the finished texture feels. On an INCI list it is usually first, which only means it is the largest single ingredient by weight.
Rubus Idaeus (Raspberry) Fruit Extract plant extract: Raspberry fruit extract, carrying fruit acids, sugars and anthocyanins. It is used as an antioxidant-rich conditioning extract.
Lavandula Angustifolia (Lavender) Extract plant extract: Lavender extract, the water-soluble fraction rather than the essential oil. It is used as a conditioning extract and carries a light lavender scent.
Melaleuca Alternifolia (Tea Tree) Leaf Extract plant extract: Tea Tree Leaf Extract is the water-based extract rather than the essential oil, so it is far milder and much less aromatic. It is used in formulas for blemish-prone skin.
Rosmarinus Officinalis (Rosemary) Leaf Extract plant extract: Rosemary Leaf Extract carries rosmarinic and carnosic acids, both effective antioxidants. It is often there to keep the oils in a formula from going rancid.
Saccharomyces Ferment Filtrate ferment: Saccharomyces Ferment Filtrate is a brewers yeast ferment filtered clear. It supplies amino acids, B vitamins and sugars, and it is one of the ferments the Korean essence category was built on.
Hydrolyzed Corn Protein protein: Hydrolyzed Corn Protein is corn protein cut into small soluble pieces. On a label it usually sits with two or three other plant proteins, because each brings a different amino acid balance.
Hydrolyzed Soy Protein protein: Hydrolyzed Soy Protein is soy protein cut into water-soluble fragments. It conditions the surface and holds water, and it is one of the most used plant proteins in cosmetics.
Hydrolyzed Wheat Protein protein: Hydrolyzed Wheat Protein is wheat protein broken into fragments small enough to dissolve in water. It holds water at the surface and leaves a smooth film, which is why it is as common in hair products as in skincare.
Octyldodeceth-16 emulsifier: An ethoxylated branched fatty alcohol. It emulsifies and also gives a formula a soft, cushioned slip.
PEG-60 Hydrogenated Castor Oil emulsifier: PEG-60 Hydrogenated Castor Oil is a castor-oil-derived solubiliser. It is what keeps fragrance and oil-soluble ingredients dissolved in a watery formula so it stays clear.
Glycerin humectant: Glycerin is the most used humectant in skincare. It draws water into the outer layer of skin and holds it there, and it is one of the very few ingredients whose hydrating effect is settled science rather than marketing. Higher amounts feel tacky, which is why it is usually blended.

17 more explained

Butylene Glycol humectant: Butylene Glycol is a small glycol that does two jobs at once: it holds water in the top layer of skin and it dissolves plant extracts and actives that plain water cannot. It also thins a formula, which is why watery Korean essences lean on it.
Caprylyl Glycol preservative booster: Caprylyl Glycol is a glycol that conditions skin and, more importantly, strengthens a preservative system so less of the traditional preservative is needed. It appears in most modern formulas built without parabens.
Polyquaternium-7 film former: Polyquaternium-7 is a positively charged polymer, so it clings to hair and skin, which carry a slight negative charge. It conditions and reduces static.
1,2-Hexanediol humectant: 1,2-Hexanediol is a glycol used for two reasons: it holds water like glycerin, and it makes a formula harder for microbes to live in, so less traditional preservative is needed. Korean formulas use it heavily for that second reason.
Sodium Citrate pH adjuster: Sodium Citrate is the salt of citric acid, used as a buffer: it holds a formula at a steady pH rather than pushing it in one direction. It is also a mild chelator.
Pentylene Glycol humectant: Pentylene Glycol hydrates and, like the other longer-chain glycols, makes a formula less hospitable to microbes so the preservative system can be lighter. It also improves how evenly a product spreads.
Ethylhexylglycerin preservative booster: Ethylhexylglycerin softens skin and boosts a preservative system, which is why it is nearly always sitting beside phenoxyethanol or 1,2-hexanediol. It also cuts down the odour bacteria produce, so it turns up in deodorising products.
Octanediol preservative booster: A glycol that hydrates and, like the other longer-chain glycols, makes a formula less hospitable to microbes so the preservative system can be lighter.
Alcohol solvent: Alcohol here means ethanol. It dissolves ingredients water cannot, evaporates fast so a formula sets quickly and does not feel heavy, and thins texture. In quantity it can leave dry or reactive skin feeling tight, which is why many Korean formulas avoid it and some deliberately use it for a fast, weightless finish.
Disodium EDTA chelator: EDTA is a chelator: it locks up trace metal ions from water and packaging that would otherwise turn a formula cloudy, off-colour or rancid. It does nothing to skin and appears at a fraction of a percent.
Sodium Benzoate preservative: Sodium Benzoate is a mild preservative that works only in acidic formulas. It is usually paired with potassium sorbate, and the pair is the standard choice where a brand wants no phenoxyethanol.
Phenoxyethanol preservative: Phenoxyethanol is the most widely used cosmetic preservative outside the paraben family. It keeps a water-containing formula from growing bacteria and mould, and is capped at one percent in most markets, so it always sits low on a list.
Fragrance (Parfum) fragrance: Fragrance, or Parfum, is a single declaration standing for a whole scent blend, which can be dozens of materials. Regulators allow it as a trade secret, so a list showing only this word does not say what the scent is made of. It is the most common trigger named by people with reactive skin.
Limonene fragrance component: Limonene is the citrus-peel aromatic. It appears here because EU labelling requires 26 fragrance components to be named individually rather than hidden inside "fragrance", and it is one of them.
Linalool fragrance component: Linalool is a floral aromatic found in lavender, bergamot and coriander. It is one of the 26 fragrance components EU labelling requires to be declared by name.
Hexyl Cinnamal fragrance component: Hexyl Cinnamal is a jasmine-like aromatic. It is one of the 26 fragrance components EU labelling requires to be named individually.
Benzyl Salicylate fragrance component: Benzyl Salicylate is a faint floral aromatic that also holds a fragrance on skin longer. It is one of the 26 fragrance components EU labelling requires to be named.

Inside the formula

Ingredients declared

Last

Fragrance on the list

Worth knowing

Patch test on the inner arm before applying to the face, as with any new skincare formula.
Introduce a new active gradually into an existing routine rather than adding several new products at once.

Complete the routine

This itemA'PIEU RASPBERRY HAIR VINEGAR Refill 400ml$15.00
The last step of the morning, over everything elseA'pieu Pure Block Sun Cream Waterproof Sun Cream SPF50/PA+++ 50ml$12.50
Cleanse first, so the next step meets bare skinA'pieu Deep Clean Bubble Foam 200ml$10.00

Total for 3 items$37.50

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A'pieu RASPBERRY HAIR VINEGAR Refill 400ml

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A'PIEU, Korean-market original

The Original Korean Formula hair treatment from A'PIEU, 400ml formulated with Saccharomyces Ferment Filtrate and Hydrolyzed Corn Protein, shipped from California or direct from Korea.

Verify your unit when it arrives

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

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 skin-care professionals say about skin care, quoted from the medical sources linked beside each.

Your skin barrier is basically your outer layer of the skin.
Melissa Piliang, MDDermatologist, Cleveland Clinic
Pretty much every step of a Korean skin care routine is going to have some component of hydration.
Alok Vij, MDDermatologist, Cleveland Clinic