Science

OFFENSE-DEFENSE SKINCARE™

Treat Powerfully. Protect Deeply.

The Skincare Tradeoff No One Talks About

Most high-performance skincare makes you choose: potency or gentleness, results or skin health.

The more products you layer to solve this, the more overwhelming skincare becomes—stealing the joy from self-care.

We built DEAU to eliminate the tradeoff.

Offense TREAT

Defense PROTECT

Skin Stays Resilient

Offense–Defense Skincare™

A formulation architecture that delivers targeted correction and active protection simultaneously.

(Offense)

Treat

Targeted correction, engineered with intention

DEAU formulas address visible skin concerns directly—tone, texture, and signs of aging through precise, results-driven treatment. Every active earns its place.

Optimized concentrations. Intelligent combinations. Purposeful delivery.

(Defense)

Protect

Skin protection as a formulation discipline

True results require resilient skin. Every DEAU formula calms, soothes, and strengthens the skin barrier so skin stays balanced as actives deliver results.

Defense is not added after irritation appears. It's built into the formulation from the beginning.

“Correction without protection is short-lived. Protection without correction is incomplete. Our formulas deliver both.”

Actives with Purpose

DEAU formulas use a focused selection of ingredients, each chosen to serve a specific role within the Offense-Defense system.

Rather than relying on single “Hero Ingredients”, each active is selected for how it contributes to targeted correction, skin stability, and daily tolerance.

A precise set of actives designed to address visible skin concerns such as uneven tone, texture, and signs of aging.

Tranexamic Acid

Targets the appearance of discoloration

Azelaic Acid

Supports clarity and smoother-looking texture

Niacinamide

Improves overall skin balance and clarity

Vitamin C System

Enhances brightness and visible radiance

Retinol

Supports skin renewal for improved texture and tone

Reinforces skin comfort and baseline condition.

Ushio Onsen Water

Helps support hydration and maintain a comfortable skin environment

Calming and supportive ingredients designed to reduce unnecessary stress during active treatment.

Acetyl Zingerone + Fullerene

Help soothe skin and protect against oxidative stress

Japanese Uji Green Tea Extract

Supports calm, balanced-looking skin

Squalane

Helps maintain moisture and skin comfort

Waters from Japan’s Spiritual Heartland

Ushio Onsen Water is sourced from Izumo, Shimane Prefecture—which is nicknamed "the prefecture of beautiful skin."

For over 1,300 years, people have traveled to these waters to heal—muscles, joints, skin conditions. In Japan, doctors still prescribe onsen visits for recovery. The same waters that once healed samurai after battle now help your skin recover from the stress of everyday life.

THE FIRST WRITTEN RECORD, 733

Bathing just once in this hot spring will clear your skin... people call it 'the water of the gods.'

— Izumo no Kuni Fudoki (Chronicle of the Land of Izumo)

What the Water Does

This isn't "just water." Ushio Onsen water is naturally rich in minerals that:

Create the right environment for actives to penetrate effectively
Calm reactive pathways so powerful ingredients can work without triggering irritation
Support barrier health with calcium, magnesium, and silica

Complex Science. Simple Routines.

This is skincare built differently — treatment and protection engineered together, not balanced after the fact. Clinical results without compromising long-term skin health.

Multitasking formulas
Fewer steps
More consistency

Because skincare should work for your skin, not against it.

EXPLORE THE FOUR ESSENTIAL PIECES

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Treat Powerfully. Protect Deeply.

The Skincare Tradeoff No One Talks About