KOSÉ × Skin Experts Develop 'Deep Tonomizu' That Deeply Penetrates 'Adult Weak Barrier Skin' and Leads to Moisturized, Firm Skin.

Dr. Phil Cosmetics Co., Ltd. (Headquarters: Chuo-ku, Tokyo; 100% owned by KOSÉ Corporation; Representative Director: Kazuyuki Shinohara), which operates the 'EXBARIA' brand for 'adult weak barrier skin' care, will launch the medicated lotion 'EXBARIA Medicated Deep Repair Lotion M・ER' (each 4,620 yen including tax) on Tuesday, June 16, 2026. It will be available at the official online shop (Maison KOSÉ, Rakuten, Amazon), AEON stores nationwide, and cosmetic specialty stores.

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Developed for 'adult weak barrier skin,' where barrier function has declined and aging signs appear in addition to dryness and rough skin, the 'Medicated Deep Repair Lotion' was created by combining the expertise of skin specialists with KOSÉ's technological research capabilities. It contains the active ingredient 'Dipotassium Glycyrrhizinate' to prevent rough skin and 'Collage Support CPX' to address loss of firmness and elasticity due to aging. The 'Deep Tonomizu' texture, which gently melts into the skin, leads to a moist, radiant, and firm complexion.

Skin Expert Commentary: Collagen Care Necessary for 'Adult Weak Barrier Skin'

When the balance of the three moisturizing factors essential for healthy skin – 'sebum film,' 'NMF (Natural Moisturizing Factor),' and 'intercellular lipids' – is disrupted within the stratum corneum, the skin enters a weak barrier state, leading to various symptoms like dryness and roughness. As age increases, spots, wrinkles, and sagging can compound this, often resulting in 'adult weak barrier skin.' In particular, 'sagging' and 'lack of firmness' are major factors that make one look older.

Dr. Phil Cosmetics Brand Consultant, Dr. Maho Hirayama, states, 'Collagen, which accounts for about 70% of the dermis components, is key to skin firmness. However, as we age, collagen is prone to poor condition.' She adds, 'Collagen breakdown is accelerated by aging and UV damage, decreasing rapidly from around age 20. Furthermore, while collagen normally maintains elasticity through soft, spring-like cross-links, when aging substances (AGEs) accumulated by glycation attach to these cross-links, the collagen hardens and loses elasticity. Collagen care is crucial for adult skin, which is prone to decreased collagen quantity and quality.'

'Deep Tonomizu' Focusing on Collagen Care for 'Adult Weak Barrier Skin'

Point 1: Contains 'Collage Support CPX' Suitable for Aging Care
'Collage Support CPX' is composed of seven moisturizing ingredients: 'Niacinamide' and 'Hydrolyzed Rice Leaf Extract' which provide moisture and plump the skin texture, along with 'Hydrolyzed Collagen,' 'Soluble Collagen,' 'Hydrolyzed Elastin,' 'Geranium Thunbergii Extract,' and 'Glycerin.' It prevents the decrease in skin moisture content due to aging, achieving firm and radiant skin.

Point 2: Contains Active Ingredient 'Dipotassium Glycyrrhizinate' to Prevent Rough Skin
It prevents rough skin caused by a weak barrier state and maintains a smooth, healthy skin environment.

Point 3: 'Hydrating Boost Formula' Allows Even the Thick Texture to Penetrate Deeply
Adopts the 'Hydrating Boost Formula' that actively delivers active ingredients and various beauty components deep into the stratum corneum. With a focus on penetration, the thick texture melts into the skin, filling the stratum corneum with moisture.

Point 4: Available in Two Types for Different Textures and Sensations

Point 5: Contains 'Moisture Barrier Ingredients' to Support Skin Barrier Function Disrupted by External Stimuli
The 'Moisture Barrier Ingredients,' composed of carefully selected moisturizing components 'Sodium Alginate,' 'Ceramide,' 'Hydrolyzed Hyaluronic Acid,' 'Serine,' and 'Glycerin,' protect the skin from external stimuli like dryness and dust, maintaining a healthy stratum corneum barrier.

New Product Overview: 'EXBARIA Medicated Deep Repair Lotion M・ER' Launching June 16, 2026

Filnatural EXBARIA Medicated Deep Repair Lotion M [Quasi-drug]
Filnatural EXBARIA Medicated Deep Repair Lotion ER [Quasi-drug]

Fragrance-free, colorant-free, paraben-free, mineral oil-free
Mild formula
Allergy tested
Patch tested

Capacity: 150mL each
Price: 4,620 yen each (tax included)
Launch Date: Tuesday, June 16, 2026
Availability: KOSÉ cosmetics sections at AEON stores nationwide, cosmetic specialty stores
Online Sales: Dr. Phil Cosmetics official online shop (Maison KOSÉ, Rakuten, Amazon)

About the 'EXBARIA' Brand for 'Adult Weak Barrier Skin' Care

This skincare brand focuses on 'weak barrier skin' with reduced barrier function, and 'adult weak barrier skin' where adult skin concerns begin to appear. It aims for beautiful, resilient skin by combining the insights of skin experts with KOSÉ's technological development capabilities.

The brand formulates ingredients that care for the stratum corneum, crucial for skin barrier function, along with ingredients for aging care tailored to specific skin concerns. Through its unique approach, it not only addresses dryness and rough skin but also achieves wrinkle improvement and whitening, leading to moist, bright, firm, and radiant skin.

Since its launch in 2019, the brand has expanded to 11 product categories and 15 varieties, including cleansing, face wash, lotion-type serum, lotion, serum gel, cream, skincare balm, sunscreen, body cream, hand cream, and lip balm.