Clean is the most used word in fragrance and one of the least defined. It gets attached to a sharp citrus, to a soft white musk, to a powdery floral and to a cold aquatic, which are four genuinely different smells. It is worth taking apart, because once you know what people mean by it you can tell which kind you actually want.
Most of what we call clean is laundry
The honest starting point. A large share of clean fragrance is the smell of washing: white musks, aldehydes, a squeeze of citrus. Those same materials sit in detergent and fabric conditioner, so the association is learned rather than natural. You are not smelling cleanliness. You are smelling what made your shirts smell of something.
That is not an insult. It works, and it works reliably, because the association is strong and almost everyone shares it. But it explains why so many clean fragrances smell alike. They are drawing on the same short list of materials to trigger the same memory.
There is a second kind, and it is structural
The more interesting sense of clean has nothing to do with soap. It is about restraint. Fewer materials, more space between them, and nothing shouting. A composition can smell clean while containing no laundry musk at all.
Three things tend to be true of it.
Balance. No single note arrives first and stays loudest. When one material dominates, the fragrance reads as heavy or as sweet or as sharp, whatever that material happens to be. Balance is what stops any of those words landing.
Airiness. Transparency comes from what has been left out. A perfumer working this way is choosing not to fill the gaps, which takes more confidence than filling them. The result has room in it, and room is most of what people mean when they say a fragrance feels light without saying it smells weak.
Structure. It holds a shape over several hours instead of collapsing into a soft blur. This is the part that separates a good clean fragrance from a forgettable one, and it is the hardest of the three to achieve.
What makes a fragrance read as not clean
Mostly density. Too many materials in the same register, arriving at once, with no space between them. Sweetness does it too, particularly the vanilla and caramel end, which reads as rich rather than fresh. So does a heavy base that turns up early instead of waiting.
None of that is bad perfumery. An oud is meant to be dense. It is simply the opposite construction, and asking it to feel clean is asking it to be something else.
Clean is difficult, which is why so much of it is dull
A crowded composition can carry a weak material. Nobody notices, because there is a great deal else happening. A sparse one cannot. Every material is exposed, so each one has to be good enough to stand alone and to sit beside the others without argument.
This is why cheap clean fragrances tend to fail in the same way. They open convincingly, then thin out within the hour and leave a faint soapiness behind. There was nothing underneath.
How to tell whether a clean fragrance is any good
Wear it, and check at hour four.
That is the whole test. The opening tells you almost nothing, because openings are designed to be liked. Four hours in, a poor clean fragrance has either vanished or turned into generic soap. A good one is quieter than it was and still recognisably itself, with the same shape it had at the start.
Do it on skin rather than paper, and give it one wearing on its own. Testing three clean fragrances side by side is a waste of an afternoon, because they occupy such a narrow range that your nose stops separating them after the second.
Where ours sit
Two of the five HOUSE OF ZIGGIMAY fragrances are built this way. Verdant Zen Brew is the more structural of the two, green and earthy with citrus and a little spice at the opening, made for clarity rather than intensity. White Tea Del Mar is the airier one, citrus and florals over jasmine and lavender with a coastal feel to it. Grasgróinn sits nearby, green and clean with warmth underneath.
None of them use the laundry route. Whether that suits you is a question only your own skin answers, over a full day, which is what samples are for.