NUMBUZIN Nad eye cream

NAD+ in Skincare: Is It Just Niacinamide With Better Marketing?

NAD+ sounds like the next big thing - but much of its benefit likely comes from niacinamide. An honest look at the trend ingredient.
Beauty of joseon retinal eye cream

Retinal Around the Eyes: What You Need to Do Differently Than on Your Face

The eye area is about a quarter as thick as the rest of your face. Here's how to adjust retinal amount, distance and frequency accordingly.  
BHA toner pad being applied to acne-prone skin

Toner Pads Every Day: Too Much Exfoliation for Acne-Prone or Sensitive Skin?

Toner pads with AHA or BHA are everywhere right now - convenient, individually packaged, quick to use. The packaging often says "safe for daily use," but with acne-prone or sensitive skin, it's fair to wonder...
Korean sunscreen with PA++++ and SPF50+ labelling on the packaging

PA+++ vs. UVA Seal: What Korean Sunscreen Labelling Actually Means

PA++++, SPF50 - what do the symbols on Korean sunscreen actually mean? Here's how the PA system compares to the European UVA seal.
anua cleansing oil for the combination skin

Double Cleansing for Combination Skin: Do You Really Need It Every Night?

Double cleansing every night - necessary or overkill? Here's when combination skin actually needs it, and when one cleanse is enough.
Arencia Vitamin C Booster Shot and Anua Niacinamide 10 + TXA 4 serum side by side with yellow cream and pink serum textures.

Niacinamide and Vitamin C Together: The Myth, Briefly Explained

Using niacinamide and vitamin C together? The old myth comes from a 1960s lab experiment - it has nothing to do with your actual routine.
Breaking out skin women holding the arencia cream

Purging or Reaction? The Difference in Five Days

Mild tightness is normal, burning isn't. Here's how to introduce retinal safely on sensitive skin - and know when to pause.
Retinal skin care

Retinal and Sensitive Skin: How to Tell Normal Adjustment from Overdoing It

If you have sensitive skin, "just try retinal and see how it goes" is not good advice - and you already know it. What you actually need is a way to tell a normal adjustment...
ic acid, ARENCIA NAD+, New Korean skincare Switzerland - Featured image alt:

We Tested It: This Month's Viral K-Beauty Drops

We put this month's most-hyped K-Beauty drops to the test — a PDRN peptide serum, an azelaic acid ampoule and an NAD+ booster. Here's what actually lived up to the buzz.