Welcome to the INKEY Blog. Where we spread and share our skincare knowledge with you!

PDRN (Polydeoxyribonucleotide) is one of skincare’s most talked-about regenerative ingredients—but is it really worth the hype? This science-led guide explores how PDRN works, what the research says about collagen and barrier repair, and the safety and ethical questions around salmon-derived formulas. We also look at next-generation alternatives that deliver regenerative results without compromising on values.

Backed by extremophile science, ectoin helps protect, hydrate, and strengthen the skin barrier against daily environmental stress. In this comprehensive guide, we break down exactly what ectoin is, how it works at a cellular level, and why dermatologists are calling it a game-changer for barrier health and long-lasting hydration. You’ll learn how ectoin compares to hyaluronic acid, which skin types benefit most, and how to use it effectively in your routine. Plus, we explain how INKEY’s Ectoin Hydro-Barrier Serum harnesses this innovative ingredient to support stronger, more resilient skin—now and over time.

Glass Skin is the Korean beauty term for a smooth, dewy, poreless look (think: a piece of glass). We’ll take you through a step-by-step guide on how to achieve glass skin with a quick daily lineup of INKEY products.

Not as well-known as Hyaluronic Acid, Polyglutamic Acid ("PGA"), is believed to have 4x greater moisture retaining benefits than HA. If you have dull, dry, or dehydrated skin, you should consider incorporating Polyglutamic Acid into your skincare recipe. 

Collagen within skincare has been a talking point within the beauty industry as a whole. But what does collagen actually do, and how can you include it in your regimen?

When it comes to anti-ageing, peptides are a powerful ingredient that you may have heard of, but what are they? Peptides, also known as polypeptides, are amino acids which form proteins in the skin. Find out more about Peptides, how they can be beneficial in your skincare routine and what INKEY List products contain this super ingredient.

Dehydration is incredibly common, but many find it hard to distinguish and thus to treat effectively. Our simple guide explains everything you need to know about dehydrated skin, in easy-to-understand, bite size pieces of information. 

It’s a term often connected to ingredients like collagen and peptides but what is ‘plump’ skin and why do we want it? Plump skin can be regarded as well-hydrated, firm with a natural fullness, roundness and bounciness. Its decline can be considered a sign of ageing and can also affect the brightness, texture and tone. Learn more about how to get plump skin, the best INKEY List products to support the production of elastin and collagen whilst giving hydration and other tips to help plump your skin.