Hyaluronic Acid Serum – Hydrating Pore Tightening Essence

Give your skin the deep, lasting hydration it craves with the TRSTAY Hyaluronic Acid Essence Serum. This lightweight, fast-absorbing facial serum is formulated to replenish moisture at every layer of the skin, visibly smooth the look of pores, and support a firmer, more radiant complexion — all in one bottle. Available in multiple sizes (5ml, 15ml, 30ml, 50ml, and 100ml) to suit every routine and budget.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Why You'll Love This Serum

• Intense Moisture Boost: Hyaluronic acid attracts and retains moisture, leaving skin feeling plump, smooth, and supple throughout the day.
• Pore-Minimizing Effect: Regular use helps visibly tighten and refine the appearance of pores for a more even skin texture.
• Skin Barrier Support: Nourishing ingredients work to reinforce the skin's natural protective layer, promoting a healthier-looking complexion over time.
• Suitable for All Skin Types: This unisex formula is gentle enough for all skin types, including sensitive, oily, combination, and dry skin.
• Versatile Sizing: Choose from 5ml, 15ml, 30ml, 50ml, or 100ml — perfect whether you're trying it for the first time or stocking up on your favourite serum.
• Whole Face Use: Designed for full-face application, integrating seamlessly into your morning and evening skincare routines.

How to Use

1. Cleanse and tone your face as usual.
2. Apply a few drops of the hyaluronic acid serum to your fingertips.
3. Gently pat and press the serum onto your face and neck.
4. Follow with your preferred moisturiser to lock in hydration.
5. Use morning and/or evening for best results.

Product Specifications

• Brand: TRSTAY
• Gender: Unisex
• Application Area: Whole Face
• Sizes Available: 5ml / 15ml / 30ml / 50ml / 100ml
• High-Concern Chemicals: None
• Made in: Mainland China

Complete Your Skincare Routine

Pair this serum with other skincare essentials for a complete routine. You may also enjoy:

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For more information on how hyaluronic acid supports skin hydration, visit the National Center for Biotechnology Information (NCBI) for peer-reviewed research on hyaluronic acid and skin care.

Learn more: South Korean beauty standards

Frequently Asked Questions

Q: What does hyaluronic acid serum do for the skin?

A: Hyaluronic acid is a naturally occurring molecule that helps skin retain moisture. As a serum, it works by drawing water into the skin's surface layers, improving hydration, smoothing texture, and giving the complexion a plumper, more youthful appearance. The TRSTAY Hyaluronic Acid Serum also helps visibly tighten pores and supports the skin's natural barrier function.

Q: Which size should I choose?

A: If you're trying the TRSTAY Hyaluronic Acid Serum for the first time, the 5ml or 15ml sizes are a great way to experience the formula. For daily users who already love this serum, the 50ml or 100ml options offer excellent value. The 30ml is a popular all-round choice for regular use.

Q: Can I use this serum if I have sensitive skin?

A: Yes! The TRSTAY Hyaluronic Acid Essence is formulated for unisex, all-skin-type use, including sensitive skin. It contains no high-concern chemicals. As with any new skincare product, we recommend doing a small patch test on the inner arm before full-face application.

Q: Can I layer this serum with other skincare products?

A: Absolutely. This serum is designed to be used after cleansing and toning, and before your moisturiser. Its lightweight, fast-absorbing formula layers beautifully under creams, SPF, and makeup without feeling heavy or greasy.