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Introducing Straine's New Shampoo and Treatment

On the launch day of their newest products, the hair care brand Straine has made waves by soaring to the top of the daily rankings on Rakuten, Japan's largest e-commerce platform. The new shampoo and treatment line not only achieved the 1st place in the hair care and styling category but was also recognized as the best-seller in the beauty and cosmetics section.

This remarkable accomplishment showcases the brand's innovative approach to hair care, emphasizing specific solutions based on varying hair structures. Established by Ai Robotics Co., Ltd, located in Minato, Tokyo, Straine focuses on creating products tailored to different hair types, catering to those with both thick and thin hair.

A Deep Dive into Straine

Straine derives its name from combining the words “straight” and “line,” reflecting their commitment to addressing the core of hair care. By researching hair structure in-depth, the brand aims to provide effective solutions that not only enhance the appearance of hair but also nourish it from within. Their unique formulations are designed to repair damage and provide long-lasting care for straightened hair.

The new shampoo and treatment lines—[BASIC] for normal to thick hair and [SOFT] for fine hair—have been developed to meet a broader range of hair concerns.

Standout Features

1. Triple Straight Formula: The products incorporate a world-first straight silk ingredient, designed to address the internal structure of hair. Essential amino acids, diamine acids, and seven types of keratin are some key components that work to repair damage from within while smoothing out frizz for a glossy finish.

2. Moisture Retention: Ingredients like ceramides and Sakuran® ensure hair remains hydrated and resilient, even in humid conditions.

Launch Information

Currently, these innovative products are available for purchase on Rakuten and in select retail stores, with a nationwide release planned for April 1, 2026. Potential buyers are encouraged to take advantage of this early access to experience the benefits of Straine’s new offerings firsthand.

Product Breakdown

STRAIGHT SHAMPOO [BASIC] / STRAIGHT TREATMENT [BASIC]

• - For normal to thick hair
• - Size: 475mL / Price: 1,980 JPY (tax included) each
• - The [BASIC] range aims to enhance manageability, smoothing out any roughness in texture and creating a soft, touchable feel.
• - Fragrance: White Blossom, exuding a sophisticated transparency.

STRAIGHT SHAMPOO [SOFT] / STRAIGHT TREATMENT [SOFT]

• - For fine hair
• - Size: 475mL / Price: 1,980 JPY (tax included) each
• - The [SOFT] line utilizes a nano-level straightening formulation to ensure a light feel while controlling frizz and maintaining volume.
• - Fragrance: Berry Blossom, appealing to the refined palate of adult users.

Both lines are free from parabens, UV absorbers, alcohol, and coloring agents, making them suitable for a wide audience.

Brand Philosophy

The essence of Straine lies in its meticulous research and understanding of hair structure, combined with a philosophy of empowering individuals to embrace their unique hair traits. The brand stands as a beacon for those struggling with curls or waves, offering a path towards beautifully straight hair through their carefully crafted products.

About Ai Robotics Co., Ltd

Renowned for ushering in a new era of freedom through AI technology, Ai Robotics Co., Ltd. directs its efforts towards continuously innovating in the beauty sector. In addition to Straine, the company also offers skincare brand Yunth and beauty device brand Brighte, as part of their expanding portfolio.

For more information, visit the Straine Store on Rakuten and follow them on social media for the latest updates.

Join the new movement in hair care with Straine, where your hair’s health and beauty take center stage.