Where Shiso Comes From — Origin & Extraction
Shiso is derived from Perilla frutescens, a herbaceous plant native to East Asia. The primary producing countries are Japan, Korea, and China, where shiso is cultivated for both culinary and aromatic applications. In Japan, regions like Aizu (Fukushima Prefecture) are known for high-quality shiso, with annual production estimated at several thousand metric tons, though only a small fraction is destined for essential oil extraction. Korea’s broader-leaf perilla (kkaennip) is also used, with a grassier, anise-like profile.
Extraction of shiso essential oil is performed via steam distillation of fresh leaves. The process operates at temperatures below 100°C to preserve volatile compounds, yielding a pale yellow oil with 0.3–0.5% extraction yield from fresh biomass. The perillaldehyde chemotype dominates in Japanese cultivars, with concentrations of 40–55% in the oil. Other chemotypes may be richer in perilla ketone, citral, or limonene, affecting the olfactory outcome. The CAS number for shiso essential oil is 90082-61-4. Solvent extraction and CO₂ extraction are less common but can be used for absolute production, resulting in a more complete aromatic profile.
Natural shiso absolute is costly, ranging from $3,000–6,000/kg due to low yields and labor-intensive harvesting. Synthetic analogues, such as perillaldehyde and safranal, are produced at $50–200/kg, offering greater consistency and affordability. Sustainability considerations focus on small-scale, rotational agriculture in Japan and Korea, minimizing soil depletion and pesticide use. Shiso cultivation is generally regarded as low-impact, and there are no IFRA restrictions on its use in perfumery.
Famous Fragrances That Define Shiso in Perfumery
Shiso has become a signature note in modern green, aromatic, and East Asian-inspired fragrances. In Tom Ford Mandarino di Amalfi (2014, Calice Becker), shiso acts as a bridge between citrus and herbal notes, lending a crisp, green freshness to the Mediterranean composition. Marie Jeanne Rose Shiso (2024) pairs shiso’s green vibrancy with rose and magnolia, creating a contemporary floral-green scent. Sisley L’Eau Rêvée d’Hubert (2023, Alexis Dadier) uses shiso alongside mint and buchu for a spicy-aromatic opening, while Les Liquides Imaginaires L’Ile Pourpre (2016, Sonia Constant) explores shiso as a dominant note in a fruity-herbal context. Aftelier Shiso (2011, Mandy Aftel) is a natural perfume that foregrounds shiso with clove, green pepper, and sandalwood, demonstrating its complexity in artisanal perfumery. These fragrances illustrate shiso’s versatility as a dominant note, bridge, or accent, often paired with citrus, rose, mint, and woody notes. CA Perfume’s collection draws inspiration from this lineage, offering both classic and contemporary interpretations of the shiso note.
Natural vs Synthetic Shiso in Perfumery
Natural shiso oil is a complex mixture dominated by perillaldehyde (CAS 2111-75-3), with supporting molecules such as limonene (CAS 138-86-3) and linalool (CAS 78-70-6). The natural extract offers a nuanced, evolving scent profile with moderate longevity and a distinctive green-spicy character. However, batch-to-batch variability is high due to climate, soil, and harvest timing.
Synthetic shiso notes are typically constructed using perillaldehyde (nature-identical), safranal (CAS 116-26-7) for spicy warmth, and isopulegol (CAS 89-79-2) for minty freshness. These aroma chemicals provide greater stability, uniformity, and cost efficiency, with prices ranging from $50–200/kg. Synthetic shiso accords are favored in large-scale production and for consistent performance in various bases (EDP, EDT, oil). Notable fragrances using synthetic shiso or analogues include Versace Pour Femme Dylan Blue (2017) and Acqua di Parma Colonia C.L.U.B. (2022).
From a sustainability perspective, synthetics reduce pressure on agricultural land and ensure traceability. The HumanSafe™ platform at CA Perfume verifies ingredient sourcing and allergen transparency, supporting both natural and synthetic options. No IFRA restrictions apply to shiso or its key synthetics, and both forms are considered safe at typical usage levels.