Testing notes Pillar

How to evaluate foundation performance

Four different failures wearing one name

When a foundation fails, almost everyone reaches the same conclusion: it does not last. But four completely different things get described that way, and they have different causes and different fixes. Separating them is the single most useful skill in complexion testing, because three of the four are solvable and one is not.

Breakdown is not the same as transfer

Product leaving the face versus product moving on the face. Different causes, different fixes.

Documented inMaison Eclat Voile Lumiere Skin TintPaid partnership

Colour shift, and how to actually check for it

Photograph at hour zero in fixed lighting or you cannot make this claim at all.

Separation and where it starts

It nearly always begins in the same three places, and where it begins tells you what caused it.

Finish change over time

A satin base going shiny at hour four may be doing exactly what it should. Know the difference.

Why conditions matter more than the formula

The same base can pass at 22 degrees and fail at 36. A review that omits conditions is not reporting a result.

A test you can run at home

Three photographs, one napkin, fixed lighting, four check-ins.

Maison Eclat

Records referenced in this article