The SPF Report
Issue 001
August 2026
An independent magazine
Light · Skin · Longevity
The SPF Report

Reports from the field of light & skin.

Weekly journalism on sunscreen science, ingredient regulation, and the global sun-care beat — written for the curious, not the algorithm.

Dispatches
02
ExplainerIngredients

Zinc oxide sunscreen formulation: how it's made

How formulators turn zinc oxide powder into elegant sunscreen. Particle size, surface treatment, refractive matching, and the trade-offs every formula makes.

10 Aug 20264 min
07
ExplainerIngredients

Nano vs non-nano zinc oxide: safety explained

What nano particle size means, how regulators tested it, and the real safety difference between nano and non-nano zinc oxide in sunscreen.

10 Aug 20265 min
08
ExplainerIngredients

Zinc oxide sunscreen: how it really works

How zinc oxide protects skin via absorption, not reflection. Safety, white cast solutions, and why it's different from chemical filters.

10 Aug 20266 min
10
ExplainerIngredients

What is tallow skincare? A plain-English beginner's guide

Beef tallow has gone from butcher's off-cut to bathroom shelf staple. Here's what tallow skincare actually is, how the fat is rendered, and where it fits — honestly — in a routine.

29 July 20264 min
11
ExplainerIngredients

Zinc sunscreen white cast: why it happens and what fixes it

The chalky film is a light-scattering problem, not a quality problem. Here is the physics behind zinc sunscreen white cast, what formulators do about it, and what actually helps at the bathroom mirror.

29 July 20265 min
14
ExplainerRegulation Watch

Australia's sunscreen scandal, one year on: what's changed

A year after CHOICE found 16 of 20 sunscreens failed their advertised SPF, the recalls have widened and the TGA is weighing the biggest overhaul of sunscreen regulation in decades. Here's the full timeline — and what it means when you reach for the bottle.

28 July 20265 min
16
AnalysisIngredients

A four-armed fix for mineral sunscreen's white cast

UCLA researchers have reshaped zinc oxide into tiny "tetrapods" that keep their SPF but lose much of the chalky finish — a lab-stage advance that could matter most for darker skin tones.

28 July 20265 min
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Tallow & zinc skincare

Evidence-backed daily skincare built on tallow hydration and zinc protection. No medical claims, just the ingredients that work.

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