Start with your skin goal

Explore Korean skincare ingredients

Get to know twelve familiar ingredients, then explore a formula from our range. These are starting points for choosing skincare; the full formula and your skin’s response matter.

Hydration & comfort

Hyaluronic acid

Hyaluronic acid is a humectant, which means it helps skin hold on to water. It appears in essences, serums, and moisturizers, sometimes as sodium hyaluronate or hydrolyzed hyaluronic acid.

Often chosen for:
Hydration and a soft, plump-looking finish.
Where it fits:
Ampoule or serum: after cleansing and any toner, before moisturizer.

Keep in mind: Pair your hydration step with a moisturizer that suits your skin.

Examples from our range

Dr. Oracle 21;Stay Hyaluronic Ampoule 30mlA 30 ml ampoule with hydrolyzed sodium hyaluronate for a hydration layer before moisturizer.View product Face Republic Hydro Boost Solution Serum 45mlA 45 ml water-based serum with multiple forms of hyaluronic acid for your serum step.View product

Ceramides

Ceramides are lipids naturally present in the skin’s outer barrier. In moisturizers, they help support that barrier and reduce moisture loss.

Often chosen for:
Moisture-barrier support and dry-skin comfort.
Where it fits:
Cream: after optional treatments. Sheet mask: after toner, then moisturizer.

Keep in mind: Choose a texture you enjoy using. The #OOTD sheet mask contains fragrance.

Examples from our range

celimax Dual Barrier Skin Wearable Cream, 50mlA fragrance-free moisturizer with five ceramides and cholesterol.View product #OOTD Ceramide Care Sheet Mask, 10 SheetsAn optional sheet-mask step featuring ceramides and cholesterol.View product

Cica / Centella asiatica

Cica is a familiar skincare name for Centella asiatica, a plant extract used in comfort-focused formulas. You may also see components such as madecassoside on a label.

Often chosen for:
Lightweight moisture and comfortable-feeling skin.
Where it fits:
Essence: after toner, before moisturizer. Gel: use as your moisturizer.

Keep in mind: The Face Republic gel contains tea tree and eucalyptus oils; check the full formula if your skin is reactive.

Examples from our range

mixsoon Soondy Centella Asiatica Essence, 100mlA watery, fragrance-free centella essence for an easy moisture layer.View product Face Republic Cica Gel Moisturizer 50mlA lightweight centella moisturizer with madecassoside.View product

Snail mucin

Snail mucin usually appears on an ingredient list as snail secretion filtrate. It is used in hydrating, skin-conditioning formulas, from fluid essences to richer creams.

Often chosen for:
Hydration and smoother-feeling skin.
Where it fits:
Snail cream: use as your moisturizer. In the set, apply toner pad, essence, then cream.

Keep in mind: Choose your routine step by the product format, rather than the ingredient name alone.

Examples from our range

#OOTD Snail Mucin Lifting Cream, 100gA silky moisturizer pairing snail secretion filtrate with panthenol.View product Hydration & Glow Starter Set for Dry, Dull SkinA routine set containing the same Snail Mucin Cream, plus vitamin C toner pads and mixsoon Bean Essence.View product

Heartleaf

Heartleaf is Houttuynia cordata, a plant ingredient found in Korean cleansers, toners, and serums. It often appears in formulas designed for a fresh, comfortable skin feel. A rinse-off cleanser and a leave-on serum do different jobs, even when both feature heartleaf.

Often chosen for:
Comfort-focused cleansing and fresh-feeling skin.
Where it fits:
Cleansing oil: on dry skin, then emulsify and rinse. Foam: lather with water and rinse.

Keep in mind: Choose the cleansing steps you need. The ANUA cleansing oil contains fragrance.

Examples from our range

ANUA Heartleaf Quercetinol Pore Deep Cleansing Foam, 150mlA water-based foam with heartleaf-derived Quercetinol.View product ANUA Heartleaf Pore Control Cleansing Oil, 200mlA heartleaf cleansing oil for removing makeup and sunscreen before a water-based cleanse.View product

PDRN

PDRN stands for polydeoxyribonucleotide. In Korean cosmetics, it often appears in serums and masks alongside peptides and hydrating ingredients. Judge a topical product by its complete formula, texture, and skin feel. Research on clinical procedures does not establish the same results for a cosmetic serum.

Often chosen for:
Hydration and a soft, dewy-looking finish.
Where it fits:
Serum: before moisturizer. Jelly mask: follow its extended-wear or overnight directions.

Keep in mind: Both medicube examples contain fragrance and salmon-derived DNA.

Examples from our range

medicube PDRN Pink Peptide Serum with Salmon DNA, 30mlA daily serum format with PDRN, niacinamide, and peptides, used before moisturizer.View product medicube PDRN Pink Collagen Jelly Gel Mask, 4 SheetsAn occasional hydrogel mask with sodium DNA, collagen, and niacinamide; follow its extended-wear directions.View product

Dullness & uneven tone

Niacinamide

Niacinamide is a form of vitamin B3 used in formulas for moisture-barrier support and more even-looking tone. You will find it in many skincare steps, including serums and moisturizers.

Often chosen for:
Uneven-looking tone, dullness, and balanced skin feel.
Where it fits:
Serum: after any toner, before moisturizer. Cream: use as your moisturizer.

Keep in mind: The ANUA Peach serum contains added fragrance; check the full formula if your skin is reactive.

Examples from our range

ANUA Peach 70% Niacinamide Serum 30mlA hydrating serum featuring 5% niacinamide and peach-derived ingredients.View product Face Republic Vita Radiance Niacin 10 Cream 50mlA moisturizer featuring 10% niacinamide and panthenol.View product

Vitamin C

Vitamin C is an antioxidant commonly included in brightening skincare. Ingredient lists may show ascorbic acid or a derivative such as ascorbyl glucoside. Its form and concentration affect how a formula performs.

Often chosen for:
Dullness and a brighter-looking complexion.
Where it fits:
Toner pads: after cleansing. Serum: after any toner, before moisturizer.

Keep in mind: Finish your morning routine with sunscreen.

Examples from our range

#OOTD Dark Spot Vitamin C Serum 50mlA lightweight vitamin C serum for a leave-on treatment step before moisturizer.View product #OOTD Vitamin C Dark Spot Toner Pad, 70 PadsVitamin C toner pads for the step after cleansing; choose this format if you prefer a pad to a serum.View product

Tranexamic acid / TXA

Tranexamic acid, often shortened to TXA, appears in topical formulas for the look of dark spots and uneven tone. It is frequently paired with niacinamide and other brightening ingredients. Introduce the chosen formula gradually and make daily sun protection part of your tone-care routine.

Often chosen for:
Dark spots, post-blemish marks, and uneven-looking tone.
Where it fits:
Toner: after cleansing. Serum: after any toner, before moisturizer.

Keep in mind: Choose the format that fits your routine; you do not need both examples.

Examples from our range

ANUA Niacinamide 10% + TXA 4% Serum 30mlA fragrance-free treatment serum featuring 4% TXA and niacinamide, used before moisturizer.View product ANUA Niacinamide 5% TXA Brightening Booster Toner 250mlA watery toner with 0.1% TXA and 5% niacinamide for the step after cleansing.View product

Pores & rough texture

Azelaic acid

Azelaic acid appears in skincare for the look of redness, blemishes, and uneven tone. Products vary in strength and texture, and sensitive skin may need a slower introduction. Give your chosen formula time in a simple routine, following its own directions for amount and frequency.

Often chosen for:
Redness, uneven-looking tone, and blemish-prone skin.
Where it fits:
Azelaic serum: after any toner. In the duo, follow with the gel cream.

Keep in mind: For this ANUA serum, start once or twice weekly and increase as tolerated.

Examples from our range

ANUA Azelaic Acid 10 Hyaluron Redness Soothing Serum 30mlA lightweight 10% azelaic acid serum with hydrating ingredients.View product Redness + Pore Texture Duo: ANUA Azelaic Acid Serum + Dr. Oracle Gel CreamA bundle option containing the same ANUA serum plus Dr. Oracle Gel Cream for the moisturizer step.View product

AHA / BHA

AHA vs BHA: AHAs such as lactic and glycolic acid exfoliate the surface, making them a common choice for dullness and rough texture. Oil-soluble salicylic acid, usually called BHA in skincare, is often chosen for oily skin and clogged pores. Both examples below combine acids; choose between the pad and liquid-toner formats, then follow that formula’s directions.

Often chosen for:
Rough-looking texture, visible pores, and excess oil.
Where it fits:
After cleansing, choose one exfoliating pad or toner, then serum and moisturizer.

Keep in mind: Start a few times weekly. Follow the package’s sun-protection guidance and avoid stacking strong exfoliants.

Examples from our range

medicube Zero Pore Pad 2.0, 70 PadsDual-textured pads combining lactic acid AHA and salicylic acid BHA in one exfoliating step.View product Face Republic AHA/BHA Toner 160mlA liquid-toner alternative with salicylic acid and citric acid, applied after cleansing.View product

Fine lines & firmness

Retinol / Retinal

Retinol vs retinal: Both are forms of vitamin A in the retinoid family. Retinol converts to retinal, then retinoic acid; retinal, also called retinaldehyde, is one conversion step away. This does not tell you how quickly a finished product will work or how comfortable it will feel. Formula, concentration, and tolerance matter, so percentages are not directly interchangeable.

Often chosen for:
The look of fine lines and uneven texture.
Where it fits:
Arencia facial serum: at night on clean, dry skin, before moisturizer. Eye serum: follow its eye-area directions.

Keep in mind: Use daily SPF. Avoid retinoids during pregnancy. Follow eye-specific directions for an eye serum.

Examples from our range

Arencia Retinal Booster Shot Firming Serum 30mlA retinal facial serum for a nighttime treatment step before moisturizer.View product Beauty of Joseon Revive Eye Serum Ginseng + Retinal 30mlAn eye-specific retinal serum with ginseng for a targeted eye-area step. Both examples contain retinal.View product

Choose the formula, not just the ingredient

  • Look beyond the percentage

    Ingredient form, concentration, and the rest of the formula work together. Compare products by their intended use and your skin’s tolerance.

  • Choose a texture you enjoy

    A familiar ingredient can appear in a cleanser, serum, mask, or cream. Choose the format that fits the step you need and feels comfortable on your skin.

  • Add one new product at a time

    Test a new product on a small area first, follow its directions, and introduce it gradually. A simple routine makes it easier to notice how your skin responds.

BUILD YOUR ROUTINE

Put your pick into a simple routine

Cleanse → Optional treatment → Moisturizer → Morning SPF

An ingredient name does not determine the step. Follow the directions for your selected cleanser, serum, mask, or cream, and keep daily sun protection part of your routine.

See the Routine GuideShop sunscreens

Ingredient questions, answered

What makes Korean skincare different?

Korean skincare is known for focusing on prevention: keeping skin hydrated, supporting the moisture barrier, and using daily sun protection, then adding targeted treatments as needed. Many Korean brands are also known for lightweight, layerable textures and ingredients such as centella, ginseng, and green tea. These are common themes, not rules; a routine can be simple.

How do I choose an ingredient for my skin concern?

Start with one main goal and a product format you need. For dry-feeling skin, compare hydrating ingredients and moisturizer textures. For uneven-looking tone or texture, explore one targeted treatment at a time. Check the full ingredient list, follow the package directions, and adjust to your skin’s response.

Does a higher ingredient percentage mean a better product?

A percentage is only one part of the formula. Ingredient form, delivery, texture, other ingredients, and your skin’s tolerance all matter. Compare products within their intended use rather than assuming the highest number will give the best experience.

How do Korean hyaluronic acid serums compare?

They mainly differ in the types of hyaluronic acid they use, their supporting ingredients, and their texture. Some combine multiple forms of hyaluronic acid; others use a simpler blend. More types don’t automatically mean better hydration. Choose the texture and supporting ingredients that feel right in your routine.

Which hyaluronic acid serum on this page should I choose?

Choose Dr. Oracle 21;Stay if you prefer a watery 30 ml ampoule with hydrolyzed sodium hyaluronate. Choose Face Republic Hydro Boost if you prefer a lightweight, non-sticky 45 ml serum with 11 types of hyaluronic acid. The choice is mainly about the texture and formula you prefer.

How do niacinamide serums help with acne?

Niacinamide can help acne-prone skin by reducing excess oil and calming visible redness while supporting the skin barrier. It may help with mild breakouts, but it isn’t a stand-alone treatment for persistent acne. For active breakouts, see our Acne & Breakouts Guide.

Niacinamide vs vitamin C: which should I choose?

Choose niacinamide when moisture-barrier support and more even-looking tone are your priorities. Choose vitamin C when you want an antioxidant-focused brightening step. Their uses overlap, and neither is universally better or gentler. You can use both if the formulas suit your skin, but you do not need both for a useful routine. Compare product formats in our Dark Spots Skincare Guide.

Does snail mucin actually work for skin?

Yes. Snail mucin is a moisturizing and conditioning ingredient that can leave skin feeling hydrated, softer, and smoother. Think of the OOTD Snail Mucin Lifting Cream featured here as a moisturizer; it won’t treat acne or erase acne scars.

Are cica and Centella asiatica the same thing?

Cica is a common skincare name associated with Centella asiatica. The ingredient list may name the plant extract or components such as madecassoside. Products can use different extracts and combinations, so two “cica” formulas may feel and perform differently.

Can I use more than one active ingredient in a routine?

Some formulas already combine several ingredients. You do not need a separate product for every ingredient in this guide. Introduce one new product at a time, and keep strong exfoliants and retinoids out of the same routine while you are learning what your skin tolerates. Follow the selected products’ directions.

Keep exploring

Further reading: Retinal metabolism · AHA guidance · BHA guidance · Niacinamide and pigmentation.

These sources discuss ingredients or specific study formulas. They do not establish results for the products shown above.