The TOHI Serum was formulated with natural ingredients, hand selected through various Japanese prefectures for their fine quality and shared for centuries in Japan to help support hair health and reduce signs of aging. The TOHI Serum is nutrition for your scalp.

“Kodawari” Process

Our process in selecting our ingredients originates from the Japanese concept of “Kodawari” which means a relentless pursuit for quality and attention to detail.

In Japan, natural ingredients are cultivated and specialized in certain prefectures, and we have selected the ingredients specifically based on the quality derived from the regions that produced them.

Our ingredient selection process is equivalent to the selection of ingredients of high end Japanese sushi masters and kaiseki chefs.


5 Kaiso-Complex

5 Varieties of Seaweed

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.

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. 

This proprietary blend of ingredients include a special type of seaweed powder which has been historically recorded as the ingredient for Edo-era long haired women to bathe their hair with.


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

  • Sake Kasu

    (Lees from Fermented Rice Wine)

    Sake Kasu is a byproduct of the sake brewing process and has significant vitamins and amino acids. It is an ingredient well known for being included in prestigious Japanese skincare products.  Our Sake Kasu comes from a high quality sake brewery in Wakayama prefecture. Sake Kasu has many anti-aging benefits for the scalp and hair including its intense hydrating, moisturizing, and anti-inflammatory properties, ability to cleanse buildup from hair follicles to help reduce hair loss and reduce aging by regenerating skin cells. (*pictured is sake)

  • Sakura

    (Cherry Blossom)

    Sakura is a natural symbol of Japan and symbolizes new beginnings and positive luck. Our Sakura extracts come from several areas of Japan including Okayama and Kyoto. Sakura has hydrating properties that protect the hair cuticles, naturally calming and anti-inflammatory properties for the scalp, antioxidants that support hair growth as well as prevent free radicals from damaging the hair, and anti-glycation agents which have an anti-aging effect and promote collagen production.

  • Tomitsu

    Tomitsu is a special ingredient made from high grade sugar cane in the Shikoku prefectures of Kagawa, that have significant benefits for your scalp and hair. Tomitsu includes magnesium, selenium, and potassium along with vitamins and calcium to help moisturize the scalp and condition your hair strands while nourishing hair follicles and reducing hair loss.

  • Yuzu

    (Japanese citrus)

    Yuzu scented oil was added for a pleasant aroma - subtle enough not to be overpowering, a scent appropriate for man or woman. Yuzu acts as a natural calming agent and scalp cleanser that also contains potassium to encourage hair growth, and vitamin C for collagen production. Our Yuzu comes from Tokushima, an area awarded for its agriculture and where top restaurants supply their citrus. 

  • Aloe

    Our Aloe extract comes from Okinawa, the southern island of Japan, well known for its warm weather and the longest living citizens. Aloe is globally known for its ability to support hair growth as it soothes the scalp upon application, calms itchiness, and reduces excessive oil and dandruff .

  • Biotin

    Biotin is a source of Vitamin B, and a recognized ingredient that helps stimulate hair follicles and in turn helps support hair growth. 

  • Semburi


    Semburi is a natural plant known for centuries to be effective for hair growth and prevent hair loss. It includes antioxidants and plant nutrients to help prevent radical damage and is naturally anti-inflammatory and anti-microbial.  It stimulates hair follicles and activates blood circulation in the scalp to encourage hair to grow. 

  • Sodium Hyaluronate

    (Hyaluronic Acid)

    Sodium Hyaluronate helps benefit the scalp by keeping it hydrated and producing collagen. It helps the hair strands become easier to brush and increases the softness and body in your hair, making it feel fuller.