Anti-aging
Retinol
A widely used active for fine lines and pigmentation, with notes on concentration and side effects.
Read more →Ingredient Guide
Cosmetic ingredient encyclopedia
Each ingredient's benefits, concentration differences, side effects and pairings in one place. An ingredient encyclopedia to help you choose by reading the label.
Anti-aging
7
Anti-aging
Peptide
A gentle anti-aging active used as a retinol alternative, with little irritation.
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Anti-aging
Bakuchiol
A plant-derived ingredient from babchi seed. How it differs from retinol, and pregnancy use.
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Anti-aging
PDRN (Polydeoxyribonucleotide)
A salmon-derived regeneration ingredient. Adenosine A2A activation, PDRN vs PN, and topical vs injectable expectations.
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Anti-aging
Collagen
The structural protein behind skin elasticity. Why topical collagen stays on the surface, what hydrolyzed collagen does, and the evidence for oral collagen.
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Anti-aging
Adenosine
A KFDA-certified anti-wrinkle ingredient. Sends regeneration signals to fibroblasts to support collagen production with very low irritation potential.
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Anti-aging
Vitamin E (Tocopherol)
A fat-soluble antioxidant that protects skin from free radicals. Its recharging synergy with vitamin C and the difference between free and ester forms.
Read more →Brightening
6
Brightening
Niacinamide
Brightening, pores, and barrier support in one. The Vitamin B3 active.
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Brightening
Vitamin C
Brightening, antioxidant, and collagen support. Forms compared on stability.
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Brightening
Vitamin C (4 Types)
The four cosmetic Vitamin C forms (LAA, SAP, MAP, THDA) compared on stability and absorption.
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Brightening
Tranexamic Acid
A KFDA-notified brightening ingredient. How it works on melasma and dark spots, plus pairing.
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Brightening
Azelaic Acid
Used for acne, redness, and pigmentation. Concentration differences and pairing.
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Brightening
Arbutin
A KFDA-certified whitening ingredient. Inhibits tyrosinase to suppress melanin formation and help fade dark spots.
Read more →Hydration
5
Hydration
Panthenol (Pro-Vitamin B5)
Converts to vitamin B5 inside the skin to deliver hydration and soothing at once. Pairing with hyaluronic acid and ceramide explained.
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Hydration
Hyaluronic Acid
A key hydrating ingredient that draws in moisture, with notes by molecular size.
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Hydration
Squalane
A stabilized form of squalene already found in sebum. Fills lipid gaps in the stratum corneum to retain moisture.
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Hydration
Beta-Glucan
A hydrating and soothing ingredient from oats and yeast. How it forms a moisture film, calms irritated skin, and pairs with other actives.
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Hydration
Glycerin
The most widely used moisturizing ingredient in cosmetics. How it draws water from the air and deeper skin layers, and how it compares to hyaluronic acid.
Read more →Barrier
3
Barrier
Ceramide
A core barrier ingredient. The 5-type complex and its ratio.
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Barrier
Allantoin
Soothes irritated skin and gently smooths the surface. Delivers both calming and keratolytic benefits at once.
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Barrier
Zinc
A mineral ingredient for sebum control and inflammation reduction. Forms, benefits, and pairing with niacinamide.
Read more →Exfoliation
1
K-Beauty
5
K-Beauty
Centella (Cica)
Saponins such as madecassoside for soothing and recovery.
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K-Beauty
Galactomyces
The core of SK-II Pitera. How the amino-acid ferment complex works.
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K-Beauty
Snail Mucin
A natural complex of glycosaminoglycans, allantoin, and collagen.
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K-Beauty
Propolis
A natural resin made by bees. Flavonoid-driven soothing and antioxidant action, plus the allergy caution.
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K-Beauty
Houttuynia Cordata
A traditional East Asian herb. Flavonoid-driven soothing and antimicrobial support for oily and trouble-prone skin.
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