Introducing Straine: The Innovative Hair Care Brand Achieving Remarkable Success on Launch Day

Meet Straine: A Groundbreaking Hair Care Brand

On June 19, 2025, a new hair care brand named Straine made its groundbreaking debut in the Japanese market, launched by AI Robotics, Inc., located in Minato, Tokyo. This innovative brand quickly made waves, achieving a remarkable six titles in total on its first day of release, including the top spot in the overall Rakuten rankings and the shampoo category. Straine's product line, which includes Straight Shampoo, Straight Treatment, and Straight Hair Oil, features the world’s first formulation of Straight Silk Care Ingredients, making it a true game changer in the hair care industry.

A Unique Approach to Hair Care

What sets Straine apart from other brands is its proprietary formulation that integrates essential amino acids and keratins, which are designed to repair and enhance the density of hair while targeting different types of damage. According to surveys using Mintel’s GNPD database, the effective combination of nine essential amino acids, dimalein acid, and seven types of keratin is a major contributing factor to the success of these products.

Upon pre-sale release in various variety stores across Japan, the Straine products quickly sold out, reflecting the high demand and unique value they offer. Starting July 1, 2025, these products will be available in drugstores nationwide, allowing even more customers to experience the advanced hair care technology that Straine offers.

The Science Behind Straine

The product line’s development is characterized by its Triple Straight Formula, which focuses on the internal structure of hair. By utilizing research done on the innermost parts of the hair, the Straine products seek to achieve a scientifically calibrated, straightened hair experience that not only looks good but feels smooth and healthy. The use of keratins derived from different natural sources supports the brand’s goal of maintaining hair moisture and delivering a desirable silky straight texture.

Product Breakdown

- Straight Shampoo (475ml): Priced at ¥1,980, this shampoo includes a scent of White Blossom, designed to nourish hair and enhance its vitality.
- Straight Treatment (475ml): Also available for ¥1,980, this treatment complements the shampoo to ensure comprehensive care and smoothing results.
- Straight Hair Oil (80ml): For those looking for added shine and moisture, this product is offered at ¥1,980.