When should I use it, and how should I apply it?

Use it morning and evening after toner. Apply an appropriate amount evenly over your face, then gently massage and pat until absorbed. You can follow with A-Cica365 Soothing Repair Cream, sold separately.

Which skin types is this serum for?

It is recommended for all skin types, including sensitive skin experiencing temporary visible redness from external irritation or overheating. It has also completed a four-week non-comedogenic assessment for acne-prone skin.

How does this renewal differ from the previous version?

The renewal keeps blemish-mark care while adding care for temporary visible redness. It also has less heavy-oil content than the previous version and features the pH4.5CICA™ complex.

How is this different from ATOBARRIER365 Serum?

This serum focuses on a mildly acidic skin environment, blemish marks and temporary visible redness. ATOBARRIER365 Serum places greater emphasis on hydration and moisture-barrier support.

Which ingredients and complexes stand out?

pH4.5CICA™ combines zinc, four CICA-related components and PHA. The formula also includes niacinamide for skin-barrier support, while gluconolactone is its PHA ingredient.

Is the formula fragrance-free?

Yes. The formula is fragrance-free.

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Aestura

A-Cica365 Soothing Relief Serum pH4.5

What it is: A pH 4.5 facial serum for cooling moisture, temporary visible redness and blemish-mark care, with a refreshing finish.

Cooling, refreshing finish
Temporary visible redness care
Blemish-mark focus
Sensitive and acne-prone fit

Net weight: 40 ml

A-Cica365 Soothing Relief Serum pH4.5

40ml ·$26.99 USD

Cooling, refreshing finish

Temporary visible redness care

Blemish-mark focus

Sensitive and acne-prone fit

Main active: pH4.5CICA™ Complex
Intensity: Supportive

PRODUCT DETAILS

Hello, cooling comfort. This daily pH 4.5 serum brings a cooling moisture sensation and refreshing finish, making it a thoughtful option when skin looks temporarily red from external irritation or overheating.

At its center is pH4.5CICA™, a complex of zinc, four CICA-related components and PHA. It helps care for temporary visible redness while supporting a mildly acidic skin environment. The renewed formula also keeps blemish-mark care in focus and has less heavy-oil content than the previous version.

The formula includes niacinamide for skin-barrier support, alongside glycerin, squalane and sodium hyaluronate. Recommended for all skin types, including sensitive skin, the serum has also completed a four-week non-comedogenic assessment for acne-prone skin. The formula is fragrance-free.

Learn more

GOES WELL WITH

1025 Dokdo Lotion$14.99 USD

1025 Dokdo Cream$24.99 USD

100 Reedle Shot Stick Pouch$8.09 USD

1025 Dokdo Cleanser$11.99 USD

1025 Dokdo Eye Cream$22.99 USD

1025 Dokdo Sleeping Pack$15.99 USD

1025 Dokdo Sun Cream$18.99 USD

1025 Dokdo Pad$20.99 USD

Explore cooling moisture, temporary visible redness care, blemish-mark support and a niacinamide-powered barrier benefit.

Cooling moisture
Visible redness care
Blemish-mark focus
Niacinamide barrier support

Key Ingredients

Abstract still life of softly folded translucent blush, pale sage and ivory sheets surrounded by glossy droplets on a seamless pale pink surface.

pH4.5CICA™ Complex

A blend of zinc, four CICA-related components and PHA that helps soothe the look of temporary redness and maintain a mildly acidic skin environment.

Niacinamide

Helps visibly brighten uneven tone and support the skin barrier.

Glycerin

A classic humectant that helps skin hold water and feel softer and smoother.

Squalane

Softens dry-feeling skin and adds slip to skin, body, hair and makeup.

Gluconolactone

A gentle exfoliating PHA that helps smooth skin texture while attracting moisture.

Real Results

15%Less visible redness immediately after use following infrared-heat exposure¹
45%Less visible redness after three days following removal of an SLS patch¹
63%Less visible redness after one week following removal of an SLS patch¹
128%Improvement in skin hydration after one use¹

View all 8 real results

White dropper bottle displayed against a coral-pink gradient with teal geometric shapes.

Concerns & Benefits

Your Concerns

1
Dehydration
When your skin could use moisture without giving up a refreshing finish.
2
Redness
When external irritation or overheating leaves skin looking temporarily red.

How To Use

1Morning and evening after toner, apply an appropriate amount evenly over your entire face.
2Gently massage and pat the serum until absorbed.

Pump and dropper bottles shown side by side with an upgrade arrow between them.

Frequently asked questions

What does the serum feel like on the skin?

It delivers a cooling moisture sensation and leaves a refreshing finish. The renewed formula also has less heavy-oil content than the previous version.

Keep learning

Customer reviews

Frequently Bought Together

Buy these products together

This itemA-Cica365 Soothing Relief Serum pH4.5$26.99 USD

1025 Dokdo Lotion$14.99 USD

1025 Dokdo Cream$24.99 USD

Total price: $66.97 USD

This itemA-Cica365 Soothing Relief Serum pH4.5$26.99 USD

1025 Dokdo Lotion$14.99 USD

1025 Dokdo Cream$24.99 USD

Total price: $66.97 USD

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1025 Dokdo Lotion

A lightweight, unscented facial moisturizer with three forms of hyaluronic acid for lasting moisture without stickiness.

200 ml$14.99 USD

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1025 Dokdo Cream

A rich, unscented balm moisturizer for lasting hydration and a soft, cushioned feel.

80 ml$24.99 USD

VT COSMETICS

100 Reedle Shot Stick Pouch

A travel-size evening booster for smoother-feeling, more refined-looking skin.

2 mL × 10$8.09 USD

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1025 Dokdo Cleanser

Creamy, slightly acidic foam for a comfortable cleanse

150 ml$11.99 USD

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1025 Dokdo Eye Cream

Lightweight daily eye care for hydration, brightness and smoother-looking fine lines.

30 ml / 1.01 fl oz$22.99 USD

ROUND LAB

1025 Dokdo Sleeping Pack

A lightweight, unscented overnight gel for hydration and smoother-feeling skin.

100 ml$15.99 USD

ROUND LAB

1025 Dokdo Sun Cream

SPF 50+ PA++++ protection in a lightweight, no-white-cast lotion.

50 ml$18.99 USD

ROUND LAB

1025 Dokdo Pad

Two-sided toner care for tidier texture and balanced moisture.

70 pads / 120 g$20.99 USD

Aestura A-Cica 365 Soothing Relief Serum pH4.5

Aestura

A-Cica365 Soothing Relief Serum pH4.5

What it is: A pH 4.5 facial serum for cooling moisture, temporary visible redness and blemish-mark care, with a refreshing finish.

Cooling, refreshing finish
Temporary visible redness care
Blemish-mark focus
Sensitive and acne-prone fit

Net weight: 40 ml

A-Cica365 Soothing Relief Serum pH4.5

40ml ·$26.99 USD

Cooling, refreshing finish

Temporary visible redness care

Blemish-mark focus

Sensitive and acne-prone fit

Main active: pH4.5CICA™ Complex
Intensity: Supportive

PRODUCT DETAILS

Learn more

GOES WELL WITH

1025 Dokdo Lotion$14.99 USD

1025 Dokdo Cream$24.99 USD

100 Reedle Shot Stick Pouch$8.09 USD

1025 Dokdo Cleanser$11.99 USD

1025 Dokdo Eye Cream$22.99 USD

1025 Dokdo Sleeping Pack$15.99 USD

1025 Dokdo Sun Cream$18.99 USD

1025 Dokdo Pad$20.99 USD

Explore cooling moisture, temporary visible redness care, blemish-mark support and a niacinamide-powered barrier benefit.

Cooling moisture
Visible redness care
Blemish-mark focus
Niacinamide barrier support