The Dictionary
Every ingredient, decoded.
We read the research so you don't have to. Deep dives into what actually works, at what concentration, and for whom.
Featured Guides
3 of 12
Ingredients
Niacinamide: The Complete Guide
Vitamin B3's superpower for oil, pigmentation, and barrier repair. what the research actually says.
8 min read
Ingredients
Retinol vs Retinal vs Tretinoin
Three retinoids, three different speeds. Here's how to pick the right one for your skin.
6 min read
Ingredients
Vitamin C: Not All Forms Are Created Equal
L-ascorbic acid, magnesium ascorbyl phosphate, THD ascorbate. which actually works?
9 min read
All Ingredients
Niacinamide
Vitamin B3
Oil controlHyperpigmentationBarrier repair
4 guides →
Retinol
Vitamin A
Anti-agingAcneTexture
6 guides →
Hyaluronic Acid
HA
HydrationPlumpingAll skin types
3 guides →
Vitamin C
L-Ascorbic Acid
BrighteningAntioxidantCollagen
5 guides →
Salicylic Acid
BHA
AcneBlackheadsOil control
3 guides →
Glycolic Acid
AHA
ExfoliationDullnessTexture
4 guides →
Azelaic Acid
RednessAcneHyperpigmentation
2 guides →
Ceramides
Barrier repairDrynessSensitivity
2 guides →
Peptides
Anti-agingFirmness
3 guides →
Zinc Oxide
Sun protectionAcne
2 guides →
Squalane
MoistureOil balance
1 guide →
Tranexamic Acid
Dark spotsMelasma
2 guides →