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IN/OUT Serum - 30ml

Name: IN/OUT Serum
Brand: Yukari
Price: 155.00 AUD
Availability: InStock

IN/OUT Serum

Made in Japan – 86.9% naturally derived

$155.00 AUD GST included

Taxes included. Shipping calculated at checkout.

Deeply hydrates and supports skin firmness and elasticity
Targets dryness, dullness, and uneven texture
Lightweight, fast-absorbing formula for daily use
With fermented rice, sake lees, soy milk, niacinamide

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What is it

Discover the essence of Japanese tradition reimagined for modern skincare. La Sincia IN/OUT Serum is a concentrated elixir, crafted with 86.9% naturally derived ingredients and rooted in time-honoured fermentation techniques. At its heart lie treasures of Japan’s heritage — fermented rice liquid, aged sake lees extract, and fermented soy milk — refined through methods perfected since the Edo period.

Enhanced with Muroto deep sea water, tea leaf extract, hyaluronic acid, and niacinamide, this lightweight, fast-absorbing serum delivers intense hydration while supporting firmness and elasticity. It restores the skin’s natural vitality, unveiling a radiant, supple, and luminous complexion.

Designed for age-appropriate care, IN/OUT Serum unites Japanese craftsmanship with advanced skincare science, offering a ritual that deeply nourishes, feels luxurious, and leaves skin refreshed with every application.

Skin Type: All skin types, especially dry or fatigued skin.
Texture: Lightweight fluid with a silky, fast-absorbing finish.
Use: Apply Morning and night after Lotion. Press into skin, then follow with Cream. [How to?]

Key Benefits

-Deeply hydrates to promote a plumper, more supple look.

-Helps refine skin texture for a smoother appearance. Enhances natural radiance and healthy-looking glow.

-Supports the feeling of firmness and elasticity. Enriched with fermented rice, sake lees, soy milk, and niacinamide.

-Suitable for sensitive skin and daily use.

Learn More

La Sincia IN/OUT Serum is the third step of the IN/OUT ritual — a targeted treatment phase that delivers intense hydration and visible renewal.

Formulated with traditional Japanese fermented ingredients sourced from a historic Edo-period sake brewery, this serum combines aged sake lees, fermented soy milk, and fermented rice extract — ingredients long celebrated in Japanese beauty rituals for their ability to promote clarity, softness, and elasticity. These bio-ferments are naturally rich in amino acids, vitamins, and enzymes that support the skin’s own regenerative rhythm.

To enhance their effectiveness, the formula is enriched with niacinamide, sodium hyaluronate, and deep sea water — delivering multi-level hydration and supporting skin firmness, even tone, and barrier strength.

Unlike heavy serums that remain on the surface, this lightweight formula absorbs quickly and works in synergy with your skin. It leaves no residue, only a sense of deep, breathable hydration and renewed balance.

It’s more than a serum — it’s a moment of reset, and the foundation of resilience.

Formulation & Philosophy

At the core of Yukari’s IN/OUT philosophy is balance — not only between science and tradition, but between what we see and what we feel.

This serum was crafted to respect the natural rhythms of your skin. Every ingredient serves a purpose: to hydrate, to support elasticity, and to visibly renew without irritation or overload. The formula is gentle yet active, suitable for daily use and ideal for skin affected by stress or external aggressors.

Ingredients

Sea Water, PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin, Butylene Glycol, Pentylene Glycol, Rice Ferment Filtrate (Sake), Sodium Hyaluronate, PPG-10 Methyl Glucose Ether, Methyl Gluceth-10, Oryza Sativa (Rice) Lees Extract, Lactobacillus/Soymilk Ferment Filtrate, Polyglyceryl-10 Laurate, Water, Glyceryl Glucoside, Glycosyl Trehalose, Hydrogenated Starch Hydrolysate, Sodium Citrate, Glycerin, Citrus Junos Peel Oil, Niacinamide, Citric Acid, Hydrogenated Lecithin, Lindera Umbellata Leaf/Twig Oil, Citrus Unshiu Peel Oil, Glycyrrhiza Glabra (Licorice) Root Extract, Phytosterols, Arginine, Camellia Sinensis Leaf Extract, Chamomilla Recutita (Matricaria) Flower Extract, Dipotassium Glycyrrhizate, Phytic Acid, Silver Oxide, Arnica Montana Flower Extract, Lamium Album Flower Extract, Nasturtium Officinale Leaf/Stem Extract, Arctium Lappa Root Extract, Hedera Helix (Ivy) Leaf/Stem Extract, Allium Sativum (Garlic) Bulb Extract, Pinus Sylvestris Cone Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Anthemis Nobilis Flower Extract, Tocopherol.

WARNINGS
For external use only. Avoid contact with eyes; if contact occurs, rinse thoroughly. Discontinue use if irritation appears and consult a physician. It is recommended to perform a patch test before first use. Keep out of reach of children. Store below 30 °C.

Free Formulation

No Parabens

No Synthetic Fragrance

No Drying Alcohols

No Artificial Colorants

No Mineral Oil

No Silicone

Key Ingredients

SHONAI BIJIN – Fermented Rice Extract

コメ発酵液

Origin: Tsuruoka City, Yamagata Prefecture

Function: Alcohol-free / Moisturizing

KOHAKUYUKI – Aged Sake Lees Extract

熟成酒粕エキス

Origin: Tsuruoka City, Yamagata Prefecture

Function: Moisturizing / Brightening

Deep Ocean Water

海洋深層水

Origin: Muroto City, Kochi Prefecture

Function: Mineral-rich hydration

Tea Leaf Extract

チャ葉エキス

Origin: Uji City, Kyoto Prefecture

Function: Antioxidant / Skin balancing

Japanese Botanical Oils

和漢精油

Origin: Kuro-moji – Tohoku, Yuzu – Ehime, Shikoku & Kyushu, Mikan – Wakayama, Kinki

Function: Antioxidant / Skin balancing

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Exclusive application method

1st
Step

Warm before applying

After applying lotion, dispense half a dropper of serum into your palm and warm it between your hands.

2nd
Step

Press and smooth

Gently press into the skin using upward motions, starting from the center of the face and moving outward.

3rd
Step

Target and absorb

Apply extra drops to dry or lined areas if needed. Let it absorb fully before following with your cream.

Hydration Booster

This lightweight serum penetrates deeply to deliver hydration and support elasticity, preparing the skin for your final moisturising step.

Pro Tip

Layer twice in the evening for enhanced firmness and glow, especially on dry or lined areas.

Who is it for?

Skincare that listens to your skin

Yukari's IN/OUT skincare is designed for real skin — sensitive, dry, or simply in need of balance.
Inspired by the quiet care of Japanese rituals, each formula works gently to restore harmony, not mask imperfections.