TRSTAY Vitamin C & Hyaluronic Acid Brightening Facial Serum

Reveal a more radiant, luminous complexion with the TRSTAY Vitamin C Brightening Facial Serum — a lightweight essence powered by antioxidant-rich Vitamin C and deeply hydrating Hyaluronic Acid. Designed for all skin types and genders, this serum works across the whole face to visibly even skin tone, restore natural glow, and support a plumper, more youthful-looking complexion.

*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 It

• Vitamin C (VC) Antioxidant Complex — Helps neutralise environmental stressors that can dull the skin, visibly brightening and evening out the complexion over time.
• Hyaluronic Acid Hydration — Draws moisture into the skin for a plumper, smoother look and feel that lasts throughout the day.
• Lightweight Essence Texture — Absorbs quickly without greasiness, making it an ideal everyday step in both morning and evening routines.
• Whole-Face Application — Formulated for use across the entire face, targeting uneven tone and dullness wherever you need it most.
• Unisex Formula — Suitable for all skin types and genders; no harsh high-concern chemicals.
• No High-Concern Chemicals — Free from flagged harmful substances, so you can feel confident in what you're applying to your skin.

How to Use

1. Cleanse and tone your face as usual.
2. Apply 2–3 drops of the serum onto your fingertips.
3. Gently pat and press the essence into the skin across the whole face.
4. Follow with your regular moisturiser for best results.
5. Use morning and/or evening as part of your daily skincare routine.

Specifications

• Brand: TRSTAY
• Gender: Unisex
• Application Area: Whole Face
• Quantity: 1 Unit
• High-Concern Chemicals: None
• Made in: Mainland China

Pair It With

Complete your skincare routine with these complementary products from our store:

• 10 Dual-End Temporary Tattoo Markers – Body & Face Paint Pens
• 0.5mm Mini Pocket Gel Pen – Quick Dry, Waterproof & 10 Refills

Learn More

For guidance on skincare ingredients and skin health, visit the FDA's Cosmetic Ingredients resource — a trusted reference for understanding what goes into the products you use every day.

Learn more: South Korean beauty standards

Frequently Asked Questions

Q: What does the Vitamin C in this facial serum do for my skin?

A: The Vitamin C (VC) in the TRSTAY Brightening Facial Serum acts as a powerful antioxidant that helps combat environmental stressors, visibly brightening the complexion and working to even out skin tone over consistent use. It supports a more luminous, glowing appearance.

Q: Can I use this Vitamin C serum with Hyaluronic Acid on sensitive skin?

A: This formula contains no high-concern chemicals and is designed for all skin types. However, if you have particularly sensitive skin, we recommend performing a patch test on a small area before applying across the whole face, and consulting a dermatologist if you have any concerns.

Q: How often should I apply this brightening facial essence?

A: For best results, apply the TRSTAY Vitamin C & Hyaluronic Acid serum once or twice daily — morning and/or evening — after cleansing and toning, and before your moisturiser. Consistent daily use helps maximise the brightening and hydrating benefits.

Q: Is this serum suitable for both men and women?

A: Yes! The TRSTAY Vitamin C Facial Serum is a unisex formula, making it an excellent everyday skincare essential for any gender and all skin types looking to boost radiance and hydration.