Where does the serum go in a skincare routine?

Apply it after toner and before an emulsion-type product. It serves as the hydration layer in the brand's cleanse, hydrate and seal routine.

How should I apply it?

Dispense an appropriate amount into your hands, spread it over your face along the skin's texture and gently pat with your fingertips until absorbed.

Can it be used in both a morning and evening routine?

Yes. The directions support use in either the morning or evening.

Which key hydrating ingredients are in the formula?

The formula includes sodium hyaluronate, AQUAXYL at 1% and glycerin. Its AQUAXYL components are xylitylglucoside, xylitol and anhydroxylitol.

How does the serum's hyaluronic-acid positioning compare with the brand's toner?

Its low-molecular-weight sodium hyaluronate combination is twice as high as the combination used in the brand's toner.

Does the formula contain artificial fragrance or aroma oils?

No. Its stated exclusions include artificial fragrance, functional fragrance and aroma oils.

Which skin types is the serum intended for?

Its intended fit includes normal, dry, oily, combination and sensitive skin.

Did the renewed version change the formula or only the packaging?

Only the packaging design changed in the renewed version.

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THE LAB by BLANC DOUX

Oligo Hyaluronic Acid Hydro Serum

What it is: A leave-on face serum that adds a light, refreshing layer of hydration and settles into a soft, smooth finish.

Deep hydration focus
Light essence texture
Quick, nonsticky finish
Soft, smooth feel

Net weight: 50 ml

Oligo Hyaluronic Acid Hydro Serum

50ml ·$17.99 USD

Deep hydration focus

Light essence texture

Quick, nonsticky finish

Soft, smooth feel

Main active: Hyaluronic Acid
Intensity: Standard

PRODUCT DETAILS

Hello, hydration. This lightweight daily serum gives your routine a focused layer of deep hydration, built around low-molecular-weight sodium hyaluronate. Its sodium hyaluronate combination is twice as high as the one in the brand's toner.

Alongside sodium hyaluronate, the formula combines AQUAXYL at 1% with a hyaluronic-acid moisture-boosting complex. Panthenol and glycerin add moisture support, helping skin hold onto water.

The essence-like texture is light, refreshing and quick to absorb, without stickiness. It settles into a soft, smooth finish that keeps the hydration experience comfortable and clean.

Its intended fit spans all skin types, including sensitive skin, and it can join either your morning or evening routine. The formula excludes artificial fragrance and aroma oils, as well as functional fragrance.

Learn more

GOES WELL WITH

1025 Dokdo Sleeping Pack$15.99 USD

1025 Dokdo Cleanser$11.99 USD

1025 Dokdo Lotion$14.99 USD

1025 Dokdo Sun Cream$18.99 USD

1025 Dokdo Cream$24.99 USD

1025 Dokdo Pad$20.99 USD

100 Reedle Shot Stick Pouch$8.09 USD

1025 Dokdo Eye Cream$22.99 USD

A focused hydration serum with a quick-absorbing, nonsticky feel and a soft, smooth finish.

Layered hydration
Moisture without stickiness
Broad everyday fit

Key Ingredients

Clear hydrogel spheres and droplets on a pale lilac background.

Hyaluronic Acid

Helps hydrate and visibly plump the skin.

Abstract glossy blush-pink and pale-sage sculptural forms intertwined on a warm ivory surface, accented by clear droplets and a soft grounding shadow.

Aquaxyl™

A branded moisturizing complex used to support skin hydration.

Panthenol

Pro-vitamin B5 that helps skin hold moisture and feel softer and more comfortable.

Glycerin

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

Three oversized translucent, softly faceted glass crystals arranged on a pale lavender stage above a blush background with a small coral accent.

Allantoin

Helps soothe and soften dry, rough-feeling skin.

Serum bottle on a reflective ledge with a water droplet above and other bottles blurred around it.

Concerns & Benefits

Your Concerns

1
Dehydration
When your skin feels short on moisture and you want a dedicated daily hydration layer.
2
Dryness
When you want moisturizing care without a sticky residue left behind.

How To Use

1Morning or evening, after toner, dispense an appropriate amount into your hands and spread it over your face along the skin's texture.
2Gently pat with your fingertips until absorbed. Leave it on, then follow with an emulsion-type product.

Close-up of the clear pump bottle angled upward with its white cap floating above.

Frequently asked questions

What does this serum feel like, and does it leave a sticky finish?

It has a light, refreshing, essence-like texture that absorbs quickly without stickiness and leaves skin feeling soft and smooth.

Keep learning

Customer reviews

Frequently Bought Together

Buy these products together

This itemOligo Hyaluronic Acid Hydro Serum$17.99 USD

1025 Dokdo Sleeping Pack$15.99 USD

1025 Dokdo Cleanser$11.99 USD

Total price: $45.97 USD

This itemOligo Hyaluronic Acid Hydro Serum$17.99 USD

1025 Dokdo Sleeping Pack$15.99 USD

1025 Dokdo Cleanser$11.99 USD

Total price: $45.97 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 Cleanser

Creamy, slightly acidic foam for a comfortable cleanse

150 ml$11.99 USD

ROUND LAB

1025 Dokdo Lotion

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

200 ml$14.99 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 Cream

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

80 ml$24.99 USD

ROUND LAB

1025 Dokdo Pad

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

70 pads / 120 g$20.99 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

ROUND LAB

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

THE LAB by BLANC DOUX Oligo Hyaluronic Acid Hydro Serum

THE LAB by BLANC DOUX

Oligo Hyaluronic Acid Hydro Serum

What it is: A leave-on face serum that adds a light, refreshing layer of hydration and settles into a soft, smooth finish.

Deep hydration focus
Light essence texture
Quick, nonsticky finish
Soft, smooth feel

Net weight: 50 ml

Oligo Hyaluronic Acid Hydro Serum

50ml ·$17.99 USD

Deep hydration focus

Light essence texture

Quick, nonsticky finish

Soft, smooth feel

Main active: Hyaluronic Acid
Intensity: Standard

PRODUCT DETAILS

Alongside sodium hyaluronate, the formula combines AQUAXYL at 1% with a hyaluronic-acid moisture-boosting complex. Panthenol and glycerin add moisture support, helping skin hold onto water.

The essence-like texture is light, refreshing and quick to absorb, without stickiness. It settles into a soft, smooth finish that keeps the hydration experience comfortable and clean.

Learn more

GOES WELL WITH

1025 Dokdo Sleeping Pack$15.99 USD

1025 Dokdo Cleanser$11.99 USD

1025 Dokdo Lotion$14.99 USD

1025 Dokdo Sun Cream$18.99 USD

1025 Dokdo Cream$24.99 USD

1025 Dokdo Pad$20.99 USD

100 Reedle Shot Stick Pouch$8.09 USD

1025 Dokdo Eye Cream$22.99 USD

A focused hydration serum with a quick-absorbing, nonsticky feel and a soft, smooth finish.

Layered hydration
Moisture without stickiness
Broad everyday fit