• White bath salts with wooden bowl and spoon on a white background
  • Wooden spoon with white powder over a wooden bowl on a wooden surface with greenery
  • Bottle of Japanese body lotion on a wooden stool with a bowl and green leaves
  • Bowl with a wooden spoon, bottle, and towel on a wooden stool with a blurred background
  • A container of Onso Shiraha no Yu Bath Salts with a white and orange design, placed on a neutral surface. A small pile of fine white bath powder is beside it, along with a sprig of green leaves and red berries, creating a natural and calming aesthetic.
  • A bottle of Onso Shiraha no Yu Bath Salts with a white and orange design, featuring Japanese text highlighting its alkaline hot spring ingredients for a luxurious onsen experience.
  • A close-up of a small pile of fine white bath salts, highlighting their texture. Partially visible in the background is the Onso Shiraha no Yu bath salt container and green leaves with red berries, evoking a natural and relaxing spa experience.
1 8

Alkaline Bath Salts

$16.00
$16.00

Complimentary shipping, duties and taxes on orders over $200

  • Made in Japan by Japanese makers
  • Ships from Japan 3–10 business days
  • 14-day returns See conditions

Inspired by Japan’s hot springs, these Japanese bath salts bring the quiet atmosphere of an onsen into your bathroom. Added to warm water, they turn an everyday bath into a welcoming moment to pause and unwind.

Made with sodium bicarbonate, sodium carbonate and natural flower minerals, the alkaline blend creates a soothing soak, inviting you to slow down and enjoy the warmth of the water.

These onsen bath salts complement wooden bath accessories, helping you create a harmonious home spa inspired by Japanese bathing traditions. A simple way to bring warmth, comfort and calm into your daily routine

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Details
  • Weight: 21.2 oz (600 g)
  • Ingredients: Sodium bicarbonate, sodium carbonate,
    calcium sulfate, flower minerals
  • Aroma: Subtle and refreshing mineral scent
  • Origin: Made in Japan
  • Designed for spa-inspired home bathing
How to use
  • Fill your bathtub with warm water
  • Add 2–3 tablespoons of bath salts and stir until
    dissolved
  • Soak for 15–20 minutes while breathing deeply
  • Rinse lightly with fresh water
  • Repeat regularly for best results
Care & Warnings
  • Store in a cool, dry place away from direct sunlight
  • Keep sealed to preserve freshness
  • For external use only, do not ingest
  • Avoid contact with eyes and broken skin
  • Keep out of reach of children
White bath salts with wooden bowl and spoon on a white background
Wooden spoon with white powder over a wooden bowl on a wooden surface with greenery
Bottle of Japanese body lotion on a wooden stool with a bowl and green leaves
Bowl with a wooden spoon, bottle, and towel on a wooden stool with a blurred background
A container of Onso Shiraha no Yu Bath Salts with a white and orange design, placed on a neutral surface. A small pile of fine white bath powder is beside it, along with a sprig of green leaves and red berries, creating a natural and calming aesthetic.
A bottle of Onso Shiraha no Yu Bath Salts with a white and orange design, featuring Japanese text highlighting its alkaline hot spring ingredients for a luxurious onsen experience.
A close-up of a small pile of fine white bath salts, highlighting their texture. Partially visible in the background is the Onso Shiraha no Yu bath salt container and green leaves with red berries, evoking a natural and relaxing spa experience.
Wooden spoon with white powder over a wooden bowl on a wooden surface with greenery
Bottle of Japanese body lotion on a wooden stool with a bowl and green leaves
Bowl with a wooden spoon, bottle, and towel on a wooden stool with a blurred background

The Irasshai way

Japanese craftsmanship, at home

Made in Japan

Every piece is sourced directly from Japanese artisans and makers.

Natural materials

Wood, ceramic and plant fibres, chosen to last and age beautifully.

Carefully packed

Every order is hand-packed in Japan and protected for the journey.

Artisan at work in a Japanese workshop

Our story

A house based in Japan

Irasshai was born in Japan, alongside the artisans who still make everyday objects the way they have for generations.

We select every piece in person, check it before it leaves, and ship it directly from Japan. No middlemen, no anonymous warehouse: authentic objects, chosen by a team that lives here.

Wakana Founder

Delivery

From Japan to your door

  1. 1 Order Secure payment, instant confirmation
  2. 2 Packed in Japan Checked and hand-packed
  3. 3 Shipped express Tracking number sent by email
  4. 4 Delivered 3–10 business days
    Duties and taxes included over $200

FAQs

 How long does delivery take?

Your order is packed in Japan and shipped express. Allow 3–10 business days depending on your country. You'll receive a tracking number by email as soon as it ships.
 Will I pay customs fees?

On orders over €200, VAT, duties and shipping are included, so there's nothing to pay on delivery. Below that, the carrier may collect these fees on delivery.
 Are your products authentic?

Yes. Every product is made in Japan and sourced directly from Japanese artisans and makers. We check each one before it ships.
 Can I return an item?

You have 14 days after delivery to return an unused item in its original packaging. Opened consumables can't be returned.
 How do I care for my product?

Each product page details the right care. Natural materials such as wood, ceramic and fibres need only simple care and develop a beautiful patina over time.
 Another question?

Our team in Japan replies within 24–48 hours. Contact us through our contact page.