Retinol 2.5% & Vitamin C Face Serum – Brighten & Firm Skin

Transform your skincare routine with the TRSTAY Retinol 2.5% & Vitamin C/A Facial Essence — a powerhouse serum formulated to visibly brighten, firm, and even your complexion. Enriched with a potent blend of Retinol, Vitamin C, and Vitamin A, this lightweight essence targets dark spots, dullness, and uneven skin tone while supporting collagen production for a more youthful-looking appearance.

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:

• Retinol 2.5% – Encourages skin cell renewal to visibly smooth and refine skin texture over time.
• Vitamin C & A Complex – Works synergistically to brighten the skin, fade the appearance of dark spots, and promote a luminous, even tone.
• Collagen Support – Helps maintain skin's natural firmness and elasticity for a plumper, more supple look.
• Whole Face Use – Suitable for full-face application, designed for unisex use on all skin types.
• Lightweight Essence Formula – Absorbs quickly without feeling heavy or greasy, making it ideal for layering under moisturizer or SPF.

How to Use:
After cleansing, apply a few drops of the essence to your face and neck. Gently press and pat into the skin until fully absorbed. Use as part of your morning or evening routine. Always follow with sunscreen when using retinol products during the day.

Who Is It For?
This unisex serum is ideal for anyone looking to improve skin radiance, minimize the look of dark spots, and support a more youthful-looking complexion — whether you're new to retinol or looking to upgrade your current serum.

Made in Mainland China.

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For more information on skincare ingredients and how retinol affects skin health, visit the National Center for Biotechnology Information (NCBI) for peer-reviewed research on topical retinoids.

Learn more: K-beauty

Frequently Asked Questions

Q: What does the Retinol 2.5% & Vitamin C facial essence do for my skin?

A: This facial essence combines Retinol 2.5% with Vitamin C and Vitamin A to help visibly brighten the complexion, reduce the appearance of dark spots, support collagen production, and refine skin texture for a smoother, more luminous look with regular use.

Q: Is this Retinol serum suitable for all skin types and both men and women?

A: Yes! The TRSTAY Retinol & Vitamin C essence is formulated for unisex use and is designed for whole-face application. If you have sensitive skin, we recommend starting with evening use only and gradually increasing frequency as your skin adjusts to retinol.

Q: How should I incorporate this essence into my skincare routine?

A: Apply a few drops to cleansed skin, gently patting into the face and neck before your moisturizer. Since retinol can increase skin sensitivity to sunlight, always apply broad-spectrum sunscreen during the day when using this product.

Q: How long before I see results from using this Retinol & Vitamin C serum?

A: Visible results vary by individual, but most users begin to notice a brighter, more even complexion within 4–6 weeks of consistent daily use. Dark spots and skin texture improvements typically become more apparent after 8–12 weeks of regular application.