yaso, a fragrance brand based in Chino, Nagano Prefecture, at the foot of the Yatsugatake mountains, brings the scent of Japan's forests into everyday life. In September 2026, the brand released the Aroma Room Mist Autumn Scent (アロマルームミスト秋香) as the newest item in Seasonal Fragrance -SIKI-, a seasonal line that makes use of natural essential oils extracted from thinned wood.
Aroma Room Mist Autumn Scent on the yaso online shop
About Seasonal Fragrance -SIKI-
Seasonal Fragrance -SIKI- is yaso's limited-edition blended fragrance series. Each blend captures a moment of spring, summer, autumn, or winter, creating scents that feel like touching the outlines of the changing seasons. The blends bring out the depth of tree essential oils, and the scents open up the landscapes of each season.
The series is released season by season, from spring through summer, autumn, and winter.
Product Features
Products are developed using the rich vegetation of Nagano.
Made With Natural Essential Oils Distilled In-House
yaso extracts natural essential oils by steam distillation from the branches and leaves of thinned wood discharged in the region and from herbs the company grows itself, and keeps an archive of essential oils from a wide variety of plants. While checking the condition of the long-aged essential oils, yaso blends the fragrances and develops the products in-house to match the image of each season's scent.
Scents of the Four Seasons in Nagano
In Chino, Nagano Prefecture, people can travel between roughly 700 m and 2,000 m above sea level. The difference in elevation gives the area rich vegetation, and the changing expressions of the plants through the year and the scents woven by deep forests can be experienced there. This line captures such seasonal scenes in fragrance.
Room Fragrance Made With 100% Natural Ingredients
In addition to natural essential oils, the products use plant-based fermented ethanol as the solvent. The recipe is made with 100% natural ingredients and is free of synthetic fragrances.
Product Lineup
The seasonal room fragrances run through spring, summer, autumn, and winter.
Aroma Room Mist Autumn Scent (アロマルームミスト秋香) – New release
Nagano larch and Himalayan cedar are layered with in-house-grown white sage, patchouli, and benzoin. The scent begins with a fresh, conifer-like opening and deepens into a sweet lingering note, like a gradient from early to late autumn, with a quiet autumn mood.
- Volume: 50 ml
- Price: ¥4,400 (tax included)
Aroma Room Mist Spring Scent (アロマルームミスト春香)
The blend layers Nagano trees with herbs that include two kinds of mugwort, Japanese and Western. The fragrance of new buds and a slight bitterness are in harmony, creating a long-awaited spring scent.
- Volume: 50 ml
- Price: ¥4,400 (tax included)
- Currently sold at directly operated stores only
Aroma Room Mist Summer Scent (アロマルームミスト夏香)
The blend layers needle juniper (ネズミサシ), also called the Japanese juniper berry, with herbs and early-ripening citrus. It is a fresh scent that helps people forget the heat.
- Volume: 50 ml
- Price: ¥4,400 (tax included)
Aroma Room Mist Winter Scent (アロマルームミスト冬香)
Nagano fir (モミ), which has a citrus-like aroma, is blended with frankincense and spices. It is a scent for savoring the warmth of a room on a cold winter day.
- Volume: 50 ml
- Price: ¥4,400 (tax included)
- Currently sold at directly operated stores only
Aroma Candle Winter Scent (アロマキャンドル冬香)
A limited-edition aroma candle scented with the Winter Scent fragrance.
- Volume: 100 g
- Price: ¥3,850 (tax included)
- Currently sold at directly operated stores only
Seasonal Gift Sets
To coincide with the release of each seasonal item, yaso also offers original gift sets. They can be combined with the brand's standard products, such as the 八十茶 series and the Apothecary series (アポセカリーシリーズ).
The Autumn Scent and 八十茶 801 set is now on sale.
A holiday gift set released last year.
Seasonal Gift Sets Now on Sale
Autumn Scent and 八十茶 801 Set
- Contents: Seasonal Fragrance -SIKI- Aroma Room Mist Autumn Scent; 八十茶 801 ほうじ赤松
- Price: ¥5,700 (tax included)
Aroma Mist Gift Set of Two (Summer Scent & Kaya) – Limited Time
- Contents: Seasonal Fragrance -SIKI- Aroma Room Mist Summer Scent; Effective Spray Kaya (エフェクティブスプレー蚊帳)
- Price: ¥7,500 (tax included)
Brand Concept
yaso is a forest fragrance brand that brings the scent of Japan's forests into everyday life. It makes the most of thinned wood that would otherwise be discarded and aims for sustainable manufacturing together with local foresters.
Skincare products made with natural essential oils extracted by yaso.
Natural essential oils are extracted from the branches and leaves of thinned wood discharged during forestry work.
- Online shop: https://shop.yaso.jp/
- Instagram: https://www.instagram.com/yaso_forest/
