What is COSRX The Hyaluronic Acid 3 Serum?

The COSRX The Hyaluronic Acid 3 Serum is a concentrated hydration serum formulated with three different molecular weights of Hyaluronic Acid working at three distinct skin depths, plus additional humectants and hydrators, in a lightweight 20ml concentrated serum format. Where regular hyaluronic acid products use a single molecular size that only hydrates at one depth, this triple-HA approach provides comprehensive, layered hydration from the deepest dermis to the skin surface for lasting plumpness and moisture.

Key Ingredients & Benefits

The serum's name references three hyaluronic acid variants operating at distinct skin depths:

High Molecular Weight HA (1500–1800 kDa) forms an invisible, breathable film on the skin surface that prevents transepidermal water loss (TEWL) — the evaporation of moisture from skin — while simultaneously attracting atmospheric moisture into the skin. For Pakistani skin in dry northern climates or air-conditioned environments, this surface HA film is a critical barrier against chronic dehydration.

Medium Molecular Weight HA (50–1000 kDa) penetrates the outer stratum corneum to hydrate the mid-layers of the epidermis. This is the layer responsible for the 'plumped' appearance associated with well-hydrated skin, visibly reducing the appearance of dehydration lines and fine lines within 30–60 minutes of application.

Low Molecular Weight HA (5–50 kDa) — sometimes called 'hydrolysed HA' — penetrates deepest, reaching the dermis to provide moisture at the foundational structural layer. Dermal hydration supports the extracellular matrix function that determines long-term skin firmness and elasticity. Sodium Hyaluronate Crosspolymer provides extended-release hydration that delivers moisture gradually over 12+ hours rather than the rapid absorption-and-evaporation of standard HA.

Skin Concerns This Addresses

How to Use COSRX The Hyaluronic Acid 3 Serum

Apply 2–3 drops to slightly damp skin (within 30 seconds of washing or toning) immediately after toning. Press gently into skin using patting motions — do not rub. The damp skin application is critical: hyaluronic acid is a humectant that draws moisture from the environment. Applying to completely dry skin in a dry climate (like Pakistani winters) can cause it to draw moisture from the deeper dermis instead, potentially worsening dehydration. Follow immediately with moisturiser to seal in the HA hydration.

COSRX The Hyaluronic Acid 3 Serum in Your Korean Skincare Routine

Apply this serum as the first serum step in your Korean skincare routine, immediately after toning and before any other serums or heavier treatments. The rule: HA goes first, heavier serums and creams go after. For maximum hydration benefit, follow with COSRX Hyaluronic Acid Intensive Cream to seal the layered HA hydration. In Pakistan's most humid summer months, a lighter moisturiser is sufficient. In cooler northern Pakistan winters, layer the HA serum 2–3 times before moisturiser.

Why Buy COSRX from Korean Skincare Pakistan?

Korean Skincare Pakistan sources directly from COSRX's official Korean distributors and ships door-to-door from Seoul in 5–7 business days. Every product is 100% authentic with Cash on Delivery available in Lahore, Karachi, Islamabad, Rawalpindi, Multan, Faisalabad, Peshawar, and all major Pakistani cities.

Frequently Asked Questions

Is COSRX The Hyaluronic Acid 3 Serum available in Pakistan?

Yes — COSRX The Hyaluronic Acid 3 Serum is available in Pakistan exclusively at Korean Skincare Pakistan. We import directly from Seoul with Cash on Delivery nationwide.

What is the COSRX The Hyaluronic Acid 3 Serum price in Pakistan?

COSRX The Hyaluronic Acid 3 Serum is available at PKR 6,980 at Korean Skincare Pakistan, shipped directly from Seoul, South Korea.

What is the difference between regular HA serum and COSRX Hyaluronic Acid 3 Serum?

Standard HA serums use a single molecular weight that hydrates only one skin depth. The triple-HA approach in this serum delivers hydration at surface, epidermal, and dermal depths simultaneously, providing more comprehensive and longer-lasting hydration than any single-weight HA product.

Should I apply COSRX HA Serum to wet or dry skin?

Apply to slightly damp skin immediately after toning. Hyaluronic acid works by drawing moisture — on dry skin in Pakistan's climate, it may draw moisture from the skin itself rather than from the environment. Damp application ensures it draws atmospheric moisture instead.

Can I use COSRX Hyaluronic Acid 3 Serum under makeup in Pakistan?

Yes. The lightweight, fast-absorbing formula works well under makeup. Apply after toning, allow 1 minute for absorption, follow with moisturiser, then apply SPF, then makeup. The HA will keep skin hydrated and plumped throughout Pakistan's long working days.