Korean Skincare Ingredients, Explained
Korean ingredient lists can run to forty lines, and the names on the front of the bottle rarely match the ones on the back. This guide covers the 31 actives you will meet most often in our catalogue: what each one is, what it is used for, what it pairs well with and when to go easy. Each entry lists the INCI name, so you can find it on any label.
Last reviewed: September 2026 · Written by the Vionine team for general education. It is not medical advice; if you have a skin condition, speak to a dermatologist.
Renewal and Firming
Ingredients chosen for skin that looks tired, thinner or less springy than it used to. Most of them work slowly, so judge them at eight to twelve weeks, not after one jar.
PDRN · Retinol · Retinal (Retinaldehyde) · Bakuchiol · Peptides · Collagen · Adenosine · Spicules · Idebenone
PDRN
On the label: Sodium DNA
Short fragments of DNA, usually taken from salmon, that became popular in Korean clinics before moving into creams and serums. In skincare it is used to help skin look smoother, more even and better rested.
- Best for: Dull or tired-looking skin, early loss of bounce
- Pairs well with: Hyaluronic acid, peptides, centella
- Go easy: Rarely irritating on its own; check the rest of the formula
Retinol
On the label: Retinol
A form of vitamin A that skin converts into retinoic acid in two steps. It is the most studied ingredient for the look of fine lines and uneven texture, and also the one most likely to cause dryness at the start.
- Best for: Fine lines, rough texture, visible pores
- Pairs well with: Ceramides, panthenol, a plain moisturizer
- Go easy: Start two or three nights a week. Use daily SPF. Avoid during pregnancy.
Retinal (Retinaldehyde)
On the label: Retinal
One conversion step closer to retinoic acid than retinol, so a lower percentage goes further. It tends to act faster than retinol at similar comfort, which is why it shows up in night sets.
- Best for: People who have used retinol and want a step up
- Pairs well with: Centella, PDRN, barrier creams
- Go easy: Same rules as retinol: build up slowly, SPF every morning
Bakuchiol
On the label: Bakuchiol
A plant extract from the babchi seed, often described as a gentler alternative to retinol. It does not share retinol's chemistry but is used for similar goals: smoother texture and a firmer look.
- Best for: Sensitive skin that cannot tolerate retinoids
- Pairs well with: Niacinamide, squalane
- Go easy: Generally well tolerated; patch test if you react to botanicals
Peptides
On the label: Palmitoyl Tripeptide-1, Acetyl Hexapeptide-8, Copper Tripeptide-1 and others
Short chains of amino acids. Different peptides do different jobs, so "peptide cream" can mean many things. The common thread is support for the look of firmness without the adjustment period of retinoids.
- Best for: Morning and night use, eye area, retinoid off-nights
- Pairs well with: Retinal, hyaluronic acid, collagen
- Go easy: Very low irritation risk; results are gradual
Collagen
On the label: Hydrolyzed Collagen, Soluble Collagen
Applied on the skin, collagen is too large to replace the skin's own. What it does well is hold water on the surface, leaving skin plumper and smoother right after use.
- Best for: Dehydrated skin, overnight masks
- Pairs well with: Peptides, ceramides
- Go easy: Not vegan unless marked as plant-based
Adenosine
On the label: Adenosine
A compound found naturally in the body and one of the ingredients Korea's cosmetic regulator lists as functional for wrinkle care. It is usually present at low percentages alongside other actives.
- Best for: Daily anti-aging creams and eye creams
- Pairs well with: Niacinamide, peptides
- Go easy: Very well tolerated
Spicules
On the label: Hydrolyzed Sponge, Spongilla Lacustris Powder
Microscopic needle-shaped particles from freshwater sponge. They create a tingling feeling and help the ingredients applied with them sink in. The sensation is normal and fades within minutes.
- Best for: Uneven texture, boosting a serum routine
- Pairs well with: PDRN, collagen, calming creams afterwards
- Go easy: Do not use on broken skin or with strong acids on the same night
Idebenone
On the label: Hydroxydecyl Ubiquinone, Idebenone
A lab-made relative of coenzyme Q10 with strong antioxidant activity. It is often paired with blackberry extract in Korean formulas aimed at the look of firmness and radiance.
- Best for: Morning antioxidant step
- Pairs well with: Vitamin C, sunscreen
- Go easy: Can feel warm on very sensitive skin
Brightening and Even Tone
For dark spots, marks left after breakouts and a generally uneven or dull look. Pair every one of these with daily sunscreen; without it, spots return.
Niacinamide · Vitamin C · Glutathione · Tranexamic Acid · Arbutin · Rice Extract and Rice Ferment
Niacinamide
On the label: Niacinamide
Vitamin B3. It is one of the few ingredients that does several things at once: helps even out tone, supports the skin barrier and helps skin look less oily. Most Korean serums use it between 2 and 10 percent.
- Best for: Nearly every skin type
- Pairs well with: Hyaluronic acid, retinol, zinc
- Go easy: Higher percentages can cause flushing in a few people
Vitamin C
On the label: Ascorbic Acid, Ascorbyl Glucoside, 3-O-Ethyl Ascorbic Acid
An antioxidant used for brightness and a more even look. Pure ascorbic acid is the strongest but also the least stable; Korean formulas often use gentler derivatives that trade some strength for comfort.
- Best for: Morning routine, under sunscreen
- Pairs well with: Vitamin E, ferulic acid, niacinamide
- Go easy: Store away from light. Stop if it stings for more than a minute.
Glutathione
On the label: Glutathione
An antioxidant made naturally in the body and a regular feature in Korean brightening lines. In topical products it is used to help skin look clearer and more luminous.
- Best for: Dullness, uneven tone
- Pairs well with: Niacinamide, vitamin C
- Go easy: Well tolerated
Tranexamic Acid
On the label: Tranexamic Acid
Originally a medicine, now used in cosmetics at low concentrations for the look of stubborn discoloration. It is gentle enough to combine with most brightening routines.
- Best for: Persistent dark patches, post-blemish marks
- Pairs well with: Niacinamide, glutathione
- Go easy: Low irritation risk
Arbutin
On the label: Alpha-Arbutin, Arbutin
A molecule derived from bearberry and one of the brightening ingredients recognised as functional by Korea's cosmetic regulator. Alpha-arbutin is the more stable form.
- Best for: Dark spots, uneven tone
- Pairs well with: Vitamin C, niacinamide
- Go easy: Well tolerated
Rice Extract and Rice Ferment
On the label: Oryza Sativa (Rice) Extract, Rice Ferment Filtrate
A traditional Korean ingredient: rice water was used long before modern skincare. Today it appears as extracts and ferments that soften skin and give it a smooth, even finish.
- Best for: Dull, dry or sensitive skin
- Pairs well with: Ginseng, niacinamide
- Go easy: Rarely irritating
Hydration and Barrier
The unglamorous layer that makes everything else work. If your skin stings, flakes or feels tight, start here before adding any active.
Hyaluronic Acid · Ceramides · Panthenol · Squalane · Beta-Glucan
Hyaluronic Acid
On the label: Sodium Hyaluronate, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid
A sugar molecule that holds water. Formulas that combine several molecule sizes hydrate both the surface and slightly deeper layers. Apply it on damp skin and seal with a moisturizer, especially in dry climates.
- Best for: Every skin type, especially dehydrated oily skin
- Pairs well with: Ceramides, panthenol
- Go easy: Can feel tacky if overused; a few drops is enough
Ceramides
On the label: Ceramide NP, Ceramide AP, Ceramide EOP
Lipids that make up about half of the skin's outer barrier. Adding them back helps skin hold moisture and feel less reactive. They work best alongside cholesterol and fatty acids.
- Best for: Dry, sensitive or over-exfoliated skin
- Pairs well with: Retinoids, acids (as a buffer)
- Go easy: Very well tolerated
Panthenol
On the label: Panthenol (Provitamin B5)
A humectant that also helps skin feel calmer. It is common in soothing creams and in products meant to be used after procedures or strong actives.
- Best for: Irritated or dry skin
- Pairs well with: Centella, ceramides
- Go easy: Very well tolerated
Squalane
On the label: Squalane
A light, stable oil that mimics a lipid skin already produces. It softens without feeling greasy and suits most skin types, including oily skin.
- Best for: Final step at night, dry patches
- Pairs well with: Retinoids, hyaluronic acid
- Go easy: Non-comedogenic for most people
Beta-Glucan
On the label: Beta-Glucan
A polysaccharide from oats, mushrooms or yeast. It hydrates in a similar way to hyaluronic acid and has a noticeably soothing feel on reactive skin.
- Best for: Sensitive, dehydrated skin
- Pairs well with: Panthenol, centella
- Go easy: Very well tolerated
Exfoliation and Pore Care
Acids and pore-focused ingredients. Use one exfoliant at a time, a few nights a week, and never on the same night as retinoids until your skin is used to both.
AHA (Glycolic and Lactic Acid) · BHA (Salicylic Acid) · PHA (Gluconolactone) · Green Tomato Extract
AHA (Glycolic and Lactic Acid)
On the label: Glycolic Acid, Lactic Acid, Mandelic Acid
Water-soluble acids that loosen the bonds between dead surface cells. They smooth rough texture and help later steps absorb evenly. Lactic and mandelic acid are gentler than glycolic.
- Best for: Rough texture, dullness
- Pairs well with: Hyaluronic acid, ceramides
- Go easy: Increases sun sensitivity: daily SPF is essential
BHA (Salicylic Acid)
On the label: Salicylic Acid, Betaine Salicylate
An oil-soluble acid that can work inside the pore. It is the first ingredient to reach for when blackheads and congestion are the problem.
- Best for: Oily skin, blackheads, congested pores
- Pairs well with: Niacinamide, tea tree
- Go easy: Can dry skin; start every other day
PHA (Gluconolactone)
On the label: Gluconolactone, Lactobionic Acid
Larger acid molecules that exfoliate more slowly and also attract water. They are the usual choice for sensitive skin that reacts to AHAs.
- Best for: Sensitive skin, first-time acid users
- Pairs well with: Centella, panthenol
- Go easy: Mild; still use sunscreen
Green Tomato Extract
On the label: Solanum Lycopersicum (Tomato) Fruit Extract
Unripe tomato contains more acids and polyphenols than ripe fruit. Korean brands use it in pore-focused lines for skin that looks oily and textured.
- Best for: Enlarged-looking pores, oiliness
- Pairs well with: BHA, niacinamide
- Go easy: Patch test if you are sensitive to fruit extracts
Calming Botanicals
Plant ingredients that Korean skincare relies on to keep strong actives comfortable. They are a good starting point for skin that reddens easily.
Centella Asiatica (Cica) · Madecassoside · Heartleaf (Houttuynia Cordata) · Tea Tree · Noni Extract · Propolis · Mugwort (Artemisia)
Centella Asiatica (Cica)
On the label: Centella Asiatica Extract, Asiaticoside, Madecassic Acid
The plant behind "cica" products. Its active compounds help skin look less red and feel more comfortable, which is why it appears in so many recovery and barrier creams.
- Best for: Redness, sensitive or stressed skin
- Pairs well with: Retinoids, acids, panthenol
- Go easy: Very well tolerated
Madecassoside
On the label: Madecassoside
One of the purified compounds from centella and the reason some creams are named "madeca". Isolating it gives a more consistent result than whole extract.
- Best for: Post-irritation care, barrier support
- Pairs well with: Ceramides, panthenol
- Go easy: Very well tolerated
Heartleaf (Houttuynia Cordata)
On the label: Houttuynia Cordata Extract
A herb long used in East Asian traditional remedies. In skincare it helps calm the look of redness and is a favourite in toners for oily, blemish-prone skin.
- Best for: Oily, reactive skin
- Pairs well with: BHA, tea tree
- Go easy: Well tolerated
Tea Tree
On the label: Melaleuca Alternifolia Leaf Extract, Tea Tree Leaf Oil
An Australian plant with a sharp, clean scent, used to help keep blemish-prone skin looking clear. In Korean formulas it is usually diluted into extracts and waters.
- Best for: Blemish-prone, oily skin
- Pairs well with: Heartleaf, niacinamide
- Go easy: Undiluted oil can irritate; avoid near eyes
Noni Extract
On the label: Morinda Citrifolia Fruit Extract
A tropical fruit rich in antioxidants. Celimax built an entire line around it for skin that looks tired and needs both calm and radiance.
- Best for: Dull, stressed skin
- Pairs well with: Hyaluronic acid, niacinamide
- Go easy: Well tolerated
Propolis
On the label: Propolis Extract
A resin bees make to protect the hive. It gives skin a glowy, nourished look and has a gentle soothing effect.
- Best for: Dry, dull skin
- Pairs well with: Honey, centella
- Go easy: Avoid if you are allergic to bee products
Mugwort (Artemisia)
On the label: Artemisia Princeps Extract, Artemisia Vulgaris Extract
A Korean herb, often from Ganghwa Island, used for skin that feels irritated or overheated.
- Best for: Sensitive, easily flushed skin
- Pairs well with: Centella, panthenol
- Go easy: Rarely, a reaction in people allergic to ragweed
Common Questions
Which Korean skincare ingredient should I start with?
Start with what your skin is missing, not with the strongest active. For tightness or flaking, begin with hyaluronic acid and ceramides. For dullness, niacinamide or vitamin C. Add retinoids or acids only once your skin feels comfortable for a few weeks.
Can I use retinol and vitamin C together?
Yes, but not in the same step. The simplest split is vitamin C in the morning under sunscreen and retinol at night.
Is it safe to combine acids with retinol?
It is possible, but not on the same night at first. Alternate them, keep a calming ingredient like centella or panthenol in the routine, and stop if your skin stings or peels.
How do I find these ingredients on a label?
Look for the INCI name listed under each entry. It is the standardized name used on ingredient lists worldwide.
Ready to build a routine around them? See the Korean Skincare Routine Guide or browse all Korean skincare.