“A Solution for Damaged Hair.” High-Damage Hair Care Brand “DAMAGE HERO” to Launch Nationwide at Approximately 3,000 Stores on April 1, 2026 (Wednesday)!

MD Co., Ltd. (Headquarters: Minato-ku, Tokyo; Representative: Kensuke Ishii) is launching "DAMAGE HERO," a new hair care brand for highly damaged hair, focusing on the molecular size of damage holes. The brand's shampoo, treatment, and hair oil will be available from April 1 (Wednesday) at approximately 3,000 stores nationwide, including Don Quijote and drugstores.

A Repair-Focused Brand that Targets Damage Holes and the Molecular Weight of Repair Ingredients

When hair is damaged, proteins leak out, and the inside becomes hollow. These hollowed-out areas are called "damage holes." When the inside of the hair becomes sparse due to damage holes, it leads to dryness, frizz, and breakage.

Therefore, it is crucial to thoroughly care for these damage holes with hair repair ingredients to restore the hair's balance. However, the size of damage holes varies from person to person depending on the cause of damage, lifestyle, and hair condition.

Furthermore, the effectiveness and sensation of repair ingredients that care for damage holes differ depending on their molecular size.

The new hair care brand "DAMAGE HERO" focuses on the "molecular size of damage holes" and the "molecular size of repair ingredients."

Based on the hair structure, it incorporates repair ingredients with different molecular weights. It has achieved a unique "Layered Repair Formula" where molecular repair*1 ingredients gradually approach the hair from the inside to the surface. With a concentrated repair design specialized for high damage, it leads to smooth, finger-combing hair from both "hair texture re-alignment*2" and "damage repair" axes.

*1 Contains repair ingredients with different molecular weights *2 Refers to improving hair texture through moisture

The Answer to Damage Care*1. Hair Repair Ingredients*2 with Molecular Weights Ranging from 292 to 30,000

Based on the hair structure, five hair repair ingredients—Collagen PPT*3, Keratin PPT*4, Silk PPT*5, CMC Bond*6, and CMC Repair*7—are formulated with different molecular weights. Hair repair ingredients*2 with molecular weights ranging from 292 to 30,000 intensively repair hair damage.

Silk PPT*8 is also included in the cleansing ingredients, emphasizing repair power.

By using the "Super Repair★Shampoo" which repairs while washing, the "Super Repair★Treatment" which replenishes easily lost amino acids, and the "Super Repair★Hair Oil" which protects hair from heat damage, even severely damaged hair will be led to smooth, finger-combing hair.

*1 As MD Co., Ltd. *2 Shampoo and treatment only *3 Hydrolyzed collagen (hair repair ingredient) *4 Hydrolyzed keratin (wool) (hair repair ingredient) *5 Hydrolyzed silk (hair repair ingredient) *6 Tosylvaline Na (hair repair ingredient) *7 Isostearoyl hydrolyzed collagen (hair repair/moisturizing ingredient), Isostearoyl hydrolyzed collagen AMPD (hair repair/moisturizing ingredient) *8 Lauroyl silk amino acid Na (cleansing ingredient)

Also Contains 3 Ingredients for Concentrated Care of Dryness, Frizz, and Frizz

■ Astaxanthin*1 (Balances scalp and hair with a skincare approach)

Astaxanthin*1 is an anti-aging*2 ingredient gaining attention in the skincare field. With a skincare approach, it prevents scalp damage from UV rays and stress, and prevents dryness by providing moisture to the scalp.

■ Tostear*3 (Prevents frizz and tangles)

It suppresses frizz and tangles, leading to manageable and easy-to-style hair. It prevents disruption caused by humidity and supports a smooth, finger-combing finish. Continuous use helps maintain hair in a manageable state.

■ Elcalactone*4 (Leverages heat to prevent hair frizz)

Reacts to heat from hair dryers and straighteners to repair hair. Supports smooth finger-combing and manageable hair. It suppresses hair frizz and helps maintain a styleable state.

*1 Astaxanthin (scalp conditioning ingredient) *2 Refers to age-appropriate care *3 Diammonium aminoethylthiocuccinate (hair conditioning ingredient) *4 γ-Docosalactone (hair repair/hair conditioning ingredient)

Product Lineup

＜Release Overview＞

・Release Date: April 1, 2026 (Wednesday)

・Official WEB: https://damagehero.jp/

・Available nationwide at Don Quijote, drugstores, and variety stores

■ Concentrated Repair Design for High Damage Achieved by DAMAGE HERO

DAMAGE HERO focuses on the molecular size of "damage holes." Based on the hair structure, hair repair ingredients are formulated with different molecular sizes. Through a concentrated repair design that gradually approaches hair damage, it leads to smooth, finger-combing hair from both "hair texture re-alignment*1" and "damage repair" axes.

1. Fills gaps with "Multi-layer Repair*2"

Contains repair ingredients with different molecular sizes ranging from 292 to 30,000. Each high, medium, and low molecular weight ingredient penetrates the hair to repair hair damage.

2. Simultaneous care for "internal" and "external"

Not only "internal repair" but also "external repair" to improve finger-combing and hair texture. DAMAGE HERO intensively repairs the inside of the hair while also improving the surface texture.

3. For various hair damages

Recommended for hair damaged by UV rays, heat, friction, dryness, coloring, perms, and bleaching. Also for hair concerned with split ends, breakage, and frizz.

*1 Refers to improving hair texture through moisture *2 Contains hair repair ingredients with different molecular weights to penetrate and repair each layer of hair

■ About DAMAGE HERO

*1 Contains repair ingredients with different molecular weights

■ About MD Co., Ltd.

・Company Name: MD Co., Ltd.

・Representative: Kensuke Ishii

・Location: Shinbashi Rokuchome Building 4F, 6-9-4 Shinbashi, Minato-ku, Tokyo

・Established: July 2020

・URL: https://mktdemo.com/