PYURU Co., Ltd. (headquartered in Itoshima, Fukuoka Prefecture; President Ichiro Inoue), a cosmetics OEM/ODM maker, is renewing its Rishiri Color Treatment, the flagship product of the Rishiri hair color series that has sold more than 37 million bottles in total*2. The renewed lineup adds a new Maroon Brown shade for a five-color range, going on sale from October 1, 2026.
It is a hair color treatment that dyes gray hair from the first use*3, guiding it toward a glossy, beautiful color while boosting the repair of each strand of hair for a smooth, silky feel.
About the Series
Gentle, everyday gray-hair color for sensitive skin
The Rishiri hair color series draws on the power of Rishiri kombu to support women with hair concerns.
Gray hair is consistently one of the top hair concerns among women. The Rishiri hair color series was born from its founder's own experience with sensitive skin and a wish to offer a gray-hair color that even sensitive-skinned women could use with peace of mind. More than 20 years after its founding, the brand continues to prioritize gentleness on the scalp and a pleasant feel, staying close to the hair concerns of many women.
The formula makes full use of the power of Rishiri kombu, discovered on Rishiri Island, moisturizing the scalp while coloring gray hair -- the natural, additive-free gray-hair color the brand had been pursuing.
Background of the Renewal
A survey of customers who are currently using, or have previously used, the earlier Rishiri hair color treatment found that, while the existing product enjoyed high satisfaction among many customers, they also asked for further improvements to dye power, treatment effect, and ease of use.
Building on years of research into hair, skin, and ingredients, and listening closely to each customer's feedback, the brand developed the new Rishiri Color Treatment.
Product Details
1. Stronger Dye Power*1 -- Dyes Gray Hair Firmly From the First Use
Guided by customer feedback, development focused on dye power, achieving a 106%*1 increase in dyeing strength.
As with the Rishiri Color Shampoo renewed in April, the team judged that the amount of dye that adheres to the hair is the most important factor, and set out to develop the series' first4 dedicated "Color Boost & Delivery" formula. A newly formulated draw-in ingredient5 and color-catch ingredient*6 work together to enhance the hair's ability to receive dye.
The new proprietary formula delivers dye deeply and quickly, achieving a deeper, glossier color than before while helping the finished shade last.
2. The Power of Rishiri Kombu, Further Strengthened
A newly added 30x-concentrated natural Rishiri kombu extract*7 raises the concentration of active components roughly 30 times over the company's previous extract, moisturizing the scalp.
The formula also includes a generous amount of natural fermented Rishiri kombu liquid9, a world-first8 ingredient made by fermenting Rishiri kombu with lactic acid bacteria, bringing moisture to each strand of hair.
With natural Rishiri kombu extract7, 30x-concentrated natural Rishiri kombu extract7, and the world-first8 natural fermented Rishiri kombu liquid9, the treatment delivers the full benefit of Rishiri kombu to hair and scalp.
3. High Hair-Repair Effect While Coloring, for Beautiful, Glossy Hair
A shine-shield ingredient*10 that boosts hair-repair effect is included. It repairs and protects the hair while forming a glossy film that guards the cuticle, preventing dye from washing out and helping keep the color beautiful. Hair also becomes smoother to the touch, letting users feel the treatment effect.
A body- and firmness-giving ingredient*11 is also included, adding moisture to the hair while guiding it toward a healthy, resilient feel with natural volume from the roots.
4. Easier to Use on Both Wet and Dry Hair
The texture has also been refined for a more pleasant application. It is now easier to dispense and spreads more smoothly on both wet and dry hair, with a softer cream texture than before that glides on and adheres closely to each strand. The brand also pursued easier rinsing and less staining on hands and in the bathroom, keeping the low staining of the previous product while raising dye power.
Five Colors, Including the New Maroon Brown
A new Maroon Brown shade has been added, and the four existing colors have also been reviewed. The natural tones blend well with black hair, dyeing hair more quickly, deeply, and glossily than before.
- Black: a natural black shade that blends with black hair
- Dark Brown: a calm, chic brown
- Honey Brown: a brighter brown with reduced red tones (close to the former Natural Brown)
- Rose Brown: a brighter brown with red tones (close to the former Light Brown)
- Maroon Brown: a mellow, natural brown
Fragrance-Free, Additive-Free Formula
Free from diamine dye, parabens, silicone, mineral oil, and oxidizing agents.
Patch-tested and allergy-tested. (This does not mean that skin irritation or allergic reactions will not occur for everyone.)
Product Specifications
Rishiri Color Treatment, five colors
200g, regular price: ¥3,480 (tax included)
Colors: Black, Dark Brown, Rose Brown, Honey Brown, Maroon Brown
Availability
Starting October 1, 2026, the product will be sold on the official website, at various e-commerce sites, and at retailers nationwide.
Official website: https://www.sastty.com/
*1 Compared with the previous product (the new Maroon Brown shade is not included); based on the company's own research, using the product once for 10 minutes.
*2 Total units sold of the Rishiri hair color series from June 2009 through June 2026 (based on the company's own research).
*3 This product is a gray-hair color treatment that colors the surface of the hair.
*4 Within the Rishiri hair color series (based on the company's own research).
*5 Cyclohexylglycerin (moisturizing ingredient), tomato seed oil (emollient ingredient).
*6 Cyclohexane-1,4-dicarboxylic acid bis-ethoxydiglycol (hair-conditioning ingredient).
*7 Rishiri kombu extract (moisturizing ingredient).
*8 According to the company's own research (as of December 2025), this ingredient was the first in the world to be given an INCI designation by the PCPC (Personal Care Products Council).
*9 Lactobacillus/Ma-kombu ferment filtrate (moisturizing ingredient).
*10 Zein, Gloiopeltis furcata extract, gamma-docosalactone (hair-repair ingredients).
*11 Polyquaternium-22, sodium tosylvalinate (hair-conditioning ingredients).
