The Hero Ingredient - 5 Kaiso Complex

The Hero Ingredient - 5 Kaiso Complex

The TOHI Scalp Serum is a cruelty free vegan formulation with 13 luxurious natural active hair care ingredients to help support your hair. The main ingredients are comprised in the 5-Kaiso Complex, which is a proprietary blend of active ingredients made of sea kelp and seaweed.

Ours is not any type of seaweed or sea kelp found in the world.  There are in fact 12,000 different species of seaweed, and our 5 Kaiso-Complex is a proprietary blend of 5 different types of the highest quality seaweed and kelp derived from the best regions that harvest them in Japan including Hokkaido, Ariake Sea, and the Seto Islands.  Sea kelp and seaweed are a big part of the Japanese diet, and there is a very sophisticated aquatic agriculture supporting the making of our ingredients in this serum.

We chose to use the certain types of seaweed and sea kelp selected because historically, and through centuries, they have been the ingredients that were tested in Japan to be good for your hair. Seaweed and kelp have been a critical part of the Japanese diet and a source of abundant nutrition in the country renowned for its benefits for hair health.

Long hair was also known to be a sign of prestige and status in the days of the aristocracy, and court ladies were known to bathe their hair in certain types of seaweed and sea kelp to keep their hair beautiful. Those ingredients are included in our proprietary blend of the serum.



  • Rich in vitamin A, B, C, E, keratin, and iodine act as nutrition for your hair and scalp
  • Extracted fucoidan and omega-3 fatty acids enrich hair follicles and encourages healthy hair growth
  • Calcium, iron, and zinc help hair shine and nourishes your scalp
  • Deep cleanse and removes dirt, oil, and buildup reducing hair loss and supporting hair growth
  • Concentrated antioxidants act as anti-aging properties and prevent premature aging
  • Naturally hydrating exfoliant
  • Amino acids strengthen hair quality
  • Anti-bacterial properties prevent dandruff and infections on scalp