A woman holding the Advanced Youth Activating Serum
Serum

Your everyday glow, activated.

10% Niacinamide + Arbutin for a more even-looking, radiant tone.

$39 4.9 (925)
Bundle deal3 bottles $69 · 5 bottles $99 · Save up to $96
Free SG deliveryOn orders $49 and above, $3 below

Bestsellers

Start with the serum, then add a mask or a cleanser.

Advanced Youth Activating Serum

Advanced Youth Activating Serum

4.9 · 925 reviews

A lightweight serum with 10% Niacinamide and Arbutin that helps skin look more even-toned and radiant. It layers easily into your morning and evening ritual.

  • Helps the look of an even, radiant tone
  • Centella Asiatica and collagen for a soft, cushioned feel
  • Light texture that layers under sun care
10% NiacinamideArbutinCentella AsiaticaCollagen

From $19.80 per bottle $39 for a single bottle

Shop the serum
Collagen Jelly MaskSEYOUL bestseller
Collagen Jelly Mask 4.9 (263)

A cooling jelly sheet for plump, hydrated-looking skin

From $13.80/box5 boxes $69
Butterfly Pea CleanserSEYOUL bestseller
Butterfly Pea Cleanser 5.0 (291)

A gentle gel cleanser that leaves skin soft, not tight

From $17.00/item5 items $85
21-Day EssenceSEYOUL bestseller
21-Day Essence 4.9 (398)

A 21-day essence ritual for deeply moisturised skin

From $17.00/item5 items $85
Sun Ampoule SPF50+ PA++++SEYOUL bestseller
Sun Ampoule SPF50+ PA++++ 4.9 (101)

Lightweight daily sun care with a soft glow

From $19.80/item5 items $99

View all bestsellers

4.9

925 reviews on our bestselling serum

2,621 reviews across 15 products

Read reviews

Store reviews via Trustoo, as of 14/10/2026

Sets & bundles

View all sets

Glass Skin Set

Includes: Advanced Youth Activating Serum, Collagen Jelly Mask

$65

Glow All Day Set

Includes: Advanced Youth Activating Serum, Sun Ampoule, Butterfly Pea Cleanser, 21-Day Essence

$115
A woman holding a SEYOUL serum bottle in soft light

simple but glowy

Bring your skin back to its natural softness, providing balance and radiance, even on the busiest days of modern life.

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Good to know

How long is the standard delivery time?

Our standard delivery time is typically 5–10 business days from the date of purchase. Delivery times may vary by location and unforeseen circumstances, such as weather delays or a high volume of orders.

Is delivery free?

Delivery is $3 on orders below $49, and free on orders of $49 and above. Orders of $109 and above also receive 1 free gift: choose a SEYOUL Blossom & Shine Bag, a SEYOUL Portable Makeup Bag or a SEYOUL Essential Umbrella.

Can I return or exchange SEYOUL products?

You can return or exchange a product within 7 days from the date you receive it, if it is unopened and in its original condition (packaging, label and seal intact). Please contact customer service for instructions. See our Returns page for the full policy.

Where can I buy SEYOUL products?

You can buy SEYOUL products on our official website and at selected retail partners.

See all FAQs