One tube with the tinting strength of a dye, a history measured in decades not centuries, and three habits that separate the painters who use it from the painters it uses.

Why portrait painters use alizarin crimson in exactly the application where it fades fastest - and what the permanent swap actually means.

PV15 is not a separate mineral - it is ultramarine blue that has been baked until the chemistry flips. Here is what that means for how you mix it.

Most red ochre is opaque. One version is not - and it changes everything about how you glaze warm darks.

Why the most expensive pigment in history still earns its place on your palette, and the three mixes that prove it.

The most powerful yellow on your palette is also the easiest to misuse - here is what it actually does in oil, and the three mixes that make skin glow.

PV23 is the most powerful pigment on the palette - one knife-tip too many and every color you mixed becomes its background.

PO20 is the pigment hiding in your flesh tones, your shadow passages, and your portrait's most convincing warmth - here is what it actually does in oil.

Why soft light on skin is a warm cream - not white - and how a 3,500-year-old pigment does that job better than anything else on your palette.

Four blues walk into a flesh mix. Only one comes out clean - and the reason explains half of portrait painting.

Terre verte, the verdaccio tradition, and the three mixes that keep flesh from going sunburnt.

Color mixing isn't guesswork. Two reliable methods get you to any oil color you want.

Let's start with the fact that there's actually no such thing as skin color. There is a skin tone.