TRSTAY Retinol & Vitamin C Face Serum – Brighten & Moisturize

Reveal a more radiant, even-toned complexion with the TRSTAY Retinol & Vitamin C Facial Serum — a lightweight, oil-based essence crafted for all skin types. This dual-action formula combines the age-defying power of retinol with the brightening brilliance of Vitamin C to help your skin look visibly smoother, luminous, and deeply moisturized from the very first use.

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-Powered Renewal: Helps minimize the appearance of fine lines and wrinkles, promoting a visibly firmer, youthful-looking complexion.
• Vitamin C Brightening: Works to fade the look of dark spots, uneven pigmentation, and dullness for a naturally glowing finish.
• Deep Moisturization: The oil-based formulation delivers rich hydration that helps maintain a smooth, supple skin texture all day long.
• Skin Whitening & Evening: Targets discoloration and helps create a more uniform, luminous skin tone over time.
• Unisex Formula: Suitable for all skin types and genders — a versatile addition to any daily skincare routine.
• No High-Concern Chemicals: Formulated with no high-concern chemical ingredients listed.

How to Use

1. Cleanse your face thoroughly and pat dry.
2. Apply a few drops of the serum to your fingertips.
3. Gently massage onto face and neck in upward circular motions.
4. Follow with your preferred moisturizer for best results.
5. Use morning and/or evening as part of your regular skincare regimen.

Product Specifications

Pair It With

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

• 10 Pairs Transparent Adhesive Wall Hooks – No-Drill, Heavy Duty
• 0.5mm Mini Pocket Gel Pen – Quick Dry, Waterproof & 10 Refills

Skincare Reference

To learn more about how retinol and Vitamin C work to support healthy skin appearance, visit the National Center for Biotechnology Information (NCBI) for peer-reviewed dermatology research.

Learn more: South Korean beauty standards

Frequently Asked Questions

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

A: This serum is formulated for unisex, all skin types. Its oil-based formula provides moisturizing benefits while delivering the brightening and smoothing effects of retinol and Vitamin C. Whether you have dry, combination, or normal skin, it can be incorporated into your daily skincare routine.

Q: How long does it take to see results from the Retinol & Vitamin C Facial Serum?

A: Results vary by individual skin type and consistency of use. Most users begin to notice an improvement in skin brightness, moisture levels, and the appearance of dark spots and fine lines within 4–8 weeks of regular daily use. For best results, use consistently as part of your morning or evening routine.

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

A: Yes! The TRSTAY facial serum is designed to layer well in a skincare routine. Apply it after cleansing and before your moisturizer or sunscreen. If you are new to retinol, we recommend starting with every other day use and gradually increasing frequency as your skin adjusts.

Q: Is this product safe during pregnancy or breastfeeding?

A: We recommend consulting your healthcare professional before using retinol-based products during pregnancy or breastfeeding, as retinol is generally advised with caution during these periods.