After testing Gamblin's Titanium Dioxide Dry Pigment (4 fl. oz.) across multiple projects, I'm convinced this is a studio essential for any serious artist. The ultra-fine powder delivers an unmatched bright white that stays true even when mixed with other colors.

What blew me away:

- Pigment power: A little goes a LONG way. One teaspoon mixed with linseed oil covered a 24x36" canvas with creamy opacity.

- Cool undertones: Unlike cheaper brands that yellow over time, this maintains a crisp, blue-based white perfect for snowscapes or highlights.

Real-world testing:

During a plein air winter painting, I used it to:

1) Lighten sky mixtures without muddiness

2) Create luminous snow textures

3) Fix a too-warm underpainting by scumbling

Minor drawbacks:

- The container lacks a sifter, so pour carefully to avoid clouds of powder

- Requires thorough mixing with medium (I prefer walnut oil)

Compared to other brands I've tried, Gamblin's version has finer particle size and better lightfastness. At $XX for 4oz, it's pricier than student-grade options but worth every penny for professionals.