Vitamin C Face Serum – Hyaluronic Acid & Dark Spot Care

Reveal a brighter, more radiant complexion with the TRSTAY Vitamin C Face Serum — a lightweight, fast-absorbing facial serum powered by a potent blend of Vitamin C and Hyaluronic Acid. Designed for all skin types and genders, this Korean-inspired skincare formula helps even skin tone, deeply hydrate, and visibly reduce the appearance of dark spots and uneven pigmentation over time.

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 Brightening: Helps visibly reduce the appearance of dark spots and dullness for a more luminous, even-looking complexion.
• Hyaluronic Acid Hydration: Delivers deep, long-lasting moisture to plump and smooth the skin's surface.
• Lightweight Oil Formulation: Absorbs quickly without leaving a greasy residue — ideal for layering under moisturizer or SPF.
• Korean Skincare Inspired: Formulated following K-beauty principles for gentle yet effective daily use.
• Unisex & Versatile: Suitable for all skin types and genders.
• Multiple Size Options: Available in 5ml, 15ml, 30ml, and 50ml — perfect for travel, trial, or a full daily routine.

Key Ingredients

• Vitamin C (Ascorbic Acid): A powerful antioxidant that helps brighten skin tone and protect against environmental stressors.
• Hyaluronic Acid: Attracts and retains moisture to keep skin looking plump and supple throughout the day.

How to Use

1. Cleanse your face thoroughly and pat dry.
2. Apply 2–3 drops of serum onto your fingertips.
3. Gently press and smooth the serum across your face and neck.
4. Follow with your favourite moisturizer or sunscreen.
5. Use morning and/or evening for best results.

Product Details

• Brand: TRSTAY
• Item Type: Face Serum
• Formulation: Oil
• Feature: Moisturizing
• Gender: Unisex
• Pieces: One Unit
• Sizes Available: 5ml / 15ml / 30ml / 50ml
• Made in: Mainland China

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Trusted Resources

Learn more about the science of Vitamin C in skincare from the NIH Office of Dietary Supplements – Vitamin C Fact Sheet.

Frequently Asked Questions

Q: What skin types is the TRSTAY Vitamin C Face Serum suitable for?

A: This Vitamin C serum is formulated for all skin types, including normal, dry, oily, combination, and sensitive skin. Its lightweight oil formula absorbs quickly and is gentle enough for daily use by both men and women.

Q: How long does it take to see results from a Vitamin C and Hyaluronic Acid serum?

A: Many users notice improved hydration and a more radiant glow within 2–4 weeks of consistent use. Visible improvements in the appearance of dark spots and uneven skin tone typically develop with continued daily use over 4–8 weeks.

Q: Which size should I choose?

A: The 5ml size is ideal for travel or first-time use. The 15ml and 30ml sizes are great for incorporating the serum into your daily routine, while the 50ml size offers the best value for long-term use.

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

A: Yes! Apply the serum after cleansing and before heavier products like moisturizers or SPF. Vitamin C serums pair especially well with sunscreen during daytime use, as Vitamin C and UV protection work together to help maintain a bright complexion.