The Hirudin Serum — 100ml Reserve
Some rituals are meant to be discovered gradually. Others, once found, are simply kept — folded permanently into the architecture of an evening, refilled without a second thought. The 100ml Reserve was formulated for the latter: a size that assumes the decision has already been made, and asks only that the formulation be there, in quantity, when it's wanted.
Nothing about the formulation itself changes at this size — the same rare, precision-formulated bioactive ingredient, the focus of decades of independent research, included at a considered 2% concentration, paired with the same small group of botanicals chosen for texture, absorption, and finish. On skin, it settles like silk pulled taut, lightweight and fast-absorbing, leaving behind a soft luminosity rather than a film. With continued nightly use, skin maintains a visibly smoother, more refined-looking texture and a luminous, even-toned quality — the kind of appearance that becomes less a result and more simply how skin looks, day to day.
What changes at 100ml is the relationship to the ritual itself. This is our most refined value across the collection — the lowest cost per application of any size — formulated in small, numbered batches for those who have decided this is simply part of who they are. The bottle remains hand-finished amber glass with a brass dropper, independently tested for tolerability and 12-month stability, exactly as every size is.
The 100ml Reserve is not for sampling, and it is not a first encounter. It is for the vanity that has already made room for it — the bottle that sits, quietly and permanently, beside the things that are used every single night without exception.
