What Is Japanese Onsen (Hot Spring) Shampoo? Beppu Hot Spring Algae Scalp Care | ONSENSOU

What Is Onsen (Hot Spring) Shampoo?

Onsen shampoo is a term for shampoos formulated with hot spring–derived ingredients. Inspired by the idea of bringing the mineral-rich benefits of Japanese hot springs into scalp care, it has drawn growing attention alongside the rising interest in scalp-focused hair care.

Beppu Hot Spring Algae: A Rare Ingredient

ONSENSOU focused on "onsen algae," a rare algae that grows in the hot springs of Beppu City, Oita Prefecture. Beppu is home to more than 2,000 hot spring sources, and extract from algae nurtured in this mineral-rich environment contains a naturally balanced blend of minerals, amino acids, and polysaccharides.

This hot spring algae extract helps moisturize the scalp while keeping it feeling clean and comfortable. ONSENSOU ranked No.1 in the scalp care category on @cosme, one of Japan's largest beauty platforms.

How to Choose an Onsen Shampoo: 3 Points

1. Cleansing base — Amino acid–based cleansers wash gently while helping the scalp keep the moisture it needs.

2. Moisturizing ingredients — Hot spring minerals and algae-derived ingredients help keep a dry-prone scalp moisturized.

3. Feel and experience — Easy lathering even in hard water, minimal tangling, and a scent you enjoy all help you keep up the routine.

ONSENSOU Hot Spring Algae Shampoo

ONSENSOU's scalp care series combines Beppu hot spring algae extract with amino acid–based cleansers to gently wash away dirt and excess sebum while adding moisture. Choose from with-menthol or menthol-free versions, and pair it with the silicone-free treatment for a complete line.

Frequently Asked Questions

Q. Can I use onsen shampoo every day?

A: Yes. It is designed for daily use. Use it to gently wash the scalp and build a routine that helps keep it moisturized.

Q. Is it suitable for sensitive skin?

A: It is designed to be low-irritation, but we recommend a patch test before first use.

Q. Where does hot spring algae extract come from?

A: It is a natural extract from algae that grows in Beppu's hot springs, containing minerals, amino acids, and polysaccharides.

Summary

Onsen shampoo is a new scalp care habit that treats the scalp with the benefits of Japanese hot springs. With ONSENSOU's Beppu hot spring algae, why not aim for a clean, moisturized scalp starting with your daily shampoo?