COSRX The Hyaluronic Acid 3 Serum 20ml
COSRX The Hyaluronic Acid 3 Serum 20ml
In stock
COSRX The Hyaluronic Acid 3 Serum is a focused hydrating serum delivering 3% hyaluronic acid to quickly plump, smooth, and restore comfort to parched, tight skin.
What It Is
This serum positions itself as a no-frills, highly effective hydration booster in the Korean skincare landscape. It addresses common skin concerns like dehydration, tightness, and dullness, distinct from more complex serums targeting aging or brightening. Compared to something like Torriden's Dive-In Low Molecular Hyaluronic Acid Serum, COSRX provides a slightly higher concentration of HA, focusing on immediate surface plumping and a straightforward ingredient list for compromised barriers. It's a foundational step for nearly any routine needing a hydration boost.
Key Ingredients
- Hyaluronic Acid (3%) & Sodium Hyaluronate: These humectants attract and hold up to 1,000 times their weight in water from the atmosphere, binding it to the skin's surface for immediate plumping and hydration.
- Glycerin: A classic, highly effective humectant that draws moisture into the skin, supporting the hydrating effects of hyaluronic acid and enhancing overall skin suppleness.
- Panthenol (Vitamin B5): Known for its soothing and restorative properties, panthenol helps calm irritation, reduce redness, and strengthen the skin's barrier function, improving moisture retention.
- Allantoin: A gentle, non-irritating ingredient that helps to soothe, heal, and protect the skin. It promotes cell proliferation and encourages healthy tissue formation.
- Betaine: A naturally occurring amino acid derivative, betaine acts as an osmolyte, helping cells maintain their water balance and protecting against dehydration, contributing to a smoother texture.
- Arginine: An amino acid with antioxidant properties, arginine also aids in skin hydration and helps to support the skin's natural healing process.
This formula prioritizes hydration and barrier support with minimal potential irritants, focusing on core humectants and soothing agents. It's free from fragrance, essential oils, and drying alcohols, formulated likely around a physiological pH (5.5-6.5) to maintain skin health. The concise list is a deliberate choice for sensitive or reactive skin types.
Who It's For
| Skin Type | Verdict |
|---|---|
| Oily / acne-prone | Yes, provides oil-free hydration without feeling heavy. |
| Dry / dehydrated | Yes, excellent for deep, lasting moisture replenishment. |
| Combination | Yes, balances hydration without exacerbating oiliness in T-zone. |
| Sensitive / reactive | Yes, minimalist, soothing formula with barrier support. |
| Mature (40+) | Yes, plumps fine lines and restores elasticity lost with age. |
How To Use
- When in routine: After cleansing and toning, before heavier serums or moisturizers, AM and PM.
- How much: Two to three drops are sufficient for the entire face.
- How to apply: Gently press or pat into the skin, avoiding harsh rubbing, until absorbed.
- What to layer next: A hydrating moisturizer or facial oil to seal in the moisture.
- Frequency: Daily, both morning and evening for consistent hydration benefits.
Frequently Asked Questions
Is this serum sticky or heavy on the skin?
No, despite its potent hydration, the serum has a lightweight, fast-absorbing texture that penetrates quickly without leaving a sticky or tacky residue. It feels comfortable under subsequent layers.
Can I use this serum if I have sensitive skin?
Yes, the COSRX The Hyaluronic Acid 3 Serum is formulated with a minimal ingredient list, free from common irritants like fragrance and essential oils, making it suitable for sensitive and reactive skin types.
Does this product contain any fragrance?
No, this serum is entirely fragrance-free, making it an excellent choice for those sensitive to scents or prone to irritation from fragranced skincare products.
Will this serum help with fine lines and wrinkles?
By deeply hydrating and plumping the skin, the hyaluronic acid in this serum can temporarily reduce the appearance of fine lines and make the skin look smoother and more supple. Consistent use supports overall skin elasticity.
Pairs Well With
To complete a hydrating and strengthening routine, consider pairing this serum with a gentle, low pH cleanser to maintain skin's natural barrier. Follow with a ceramide-rich moisturizer to lock in the serum's hydration and further support barrier function, like the Illiyoon Ceramide Ato Concentrate Cream. For an extra boost, integrate a propolis or snail mucin essence before the serum to enhance repair and overall skin resilience.
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Returns
Returns
We understand that making the perfect skincare choice takes time—and we’re here to give you exactly that.
That’s why we offer a generous 180-day return window from the day your order is delivered. Because confidence in your skincare routine shouldn’t be rushed.
If for any reason you change your mind, simply make sure the product is unopened, unused, and in its original condition, and we’ll happily accept it back.
To initiate a return, just reach out to our customer service team with your order number. We’ll handle the rest with care and clarity.
Because at Mirai Skin, your glow—and your peace of mind—come first.
The Mirai Skin Experience
The Mirai Skin Experience
At Mirai Skin, we believe skincare should be simple, smart, and accessible to everyone.
We’re not just here to sell you products—we’re here to help you understand them. Our mission is to make expert knowledge and high-quality Korean skincare available at fair, honest prices, without the overwhelming fluff.
We know that finding the right product isn’t always easy. That’s why we’ve built Mirai Skin to be more than a shop—it’s a space where you can feel supported, informed, and empowered to make the best decisions for your unique skin.
✨ Whether you’re a skincare beginner or a glow-obsessed pro, we’re here to guide you. If you ever feel unsure about what product is best for you, don’t hesitate to reach out. Email us at support@mirai-skin.com and we’ll personally help you choose what fits your skin’s needs and your goals.
Because to us, it’s not just about what you buy.
It’s about how you feel using it.
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