The Story
Why it exists.
The beginning
The 2025 fragrance Substance is named for what it delivers. Hazelnut and cognac arrive first, not as decoration, but as a statement. The warm, almost edible combination hits immediately with real weight, bitter and sweet at once, a roasted creaminess that doesn't ask permission. This boldness sets the tone for everything that follows. There's an immediate sensory impact here, a warmth with nowhere to be quiet. This is what sensory fullness smells like: the cognac brings boozy depth while hazelnut adds roasted, nutty bitterness, and together they create something decadent and grounded. Bold enough to wake something up, the opening establishes presence and doesn't let go.
Francesco Perini designed this around undeniable richness. The opening pairs cognac's warmth with hazelnut's roasted bitterness, simultaneously bitter, creamy, sharp. The heart builds slow heat from cinnamon and tonka, while ambergris and oakmoss keep it grounded. By the base, sandalwood, vanilla, praline, and myrrh have built something substantial. The sweetness never turns cloying, it stays warm, almost savory, because the composition keeps pulling toward complexity rather than simplicity. This is indulgence that earns its presence.
The evolution
The opening arrives immediately. Cognac and hazelnut create a warm, bitter, almost edible combination, not politely, but with real weight. The hazelnut's roasted quality meets the cognac's boozy warmth to create something simultaneously sweet and dry, a bitter-cream sensation that carries genuine presence. As the fragrance develops, cinnamon begins building that characteristic slow heat, adding spiced warmth that deepens the initial impression. When the heart develops, cane sugar and tonka soften everything into something warmer and more intimate, tempering the bitterness into rounded sweetness. Oakmoss lingers underneath throughout this evolution, keeping the sweetness honest and grounded rather than allowing it to float away into pure confection.
Cultural impact
Substance offers something distinctive in the sweet-warm space with its hazelnut-praline combination. Wearers gravitate toward its honest warmth, moderate sillage that stays close rather than announcing itself, warmth that rewards attention rather than demanding it. The cognac and hazelnut opening establishes a sensory fullness that feels intentional and crafted rather than accidental. There's a boldness here that doesn't need amplification, a presence that speaks quietly but carries depth. The fragrance occupies its own territory, offering richness without excess, sweetness without shallowness.
The House
SynesthesieSynesthesie is a fragrance house that emerged with a collection of five new releases in 2025, including Mothers' Instinct, Step Into Liquid, Blow, Substance, and Strange Days. The brand positions itself around the concept of synesthesia, the neurological phenomenon where one sense triggers another, suggesting an artistic approach that seeks to translate sensory crossovers into olfactory experiences. Despite marketing language referencing longevity and sensory legacy, verifiable independent sources about the house's founding, location, or creative team remain limited in the research gathered. The 2025 fragrance lineup indicates recent activity in the niche fragrance market.
The Creator
Francesco PeriniPerini favors natural materials with a strong sense of origin. Tuscan cypress, resinous woods, and aromatic herbs from the surrounding countryside appear frequently in his compositions, though he does not limit himself geographically when a material serves the work.
























