Oct 18, 2025

Q&A with TRSTAY LUXE: Your Top Skincare Questions Answered

At TRSTAY LUXE, we’re committed to delivering luxury skincare backed by science, and our flagship PDRN Serum—infused with Stem Cell and Salmon DNA technology—is at the heart of this mission. Developed at our NDC-certified R&D center in Seoul (#1114, 320, Gangnam-daero), this serum has garnered attention for its regenerative and anti-aging benefits. But we know you have questions! Based on feedback from our global community—spanning the U.S. (via Amazon), Korea, and China—we’ve compiled the most asked questions about TRSTAY LUXE products. Our experts, including dermatologists and skincare innovators, provide detailed answers to help you achieve your best skin yet.

 

Why Choose TRSTAY LUXE PDRN Serum?

Before diving into the Q&A, let’s highlight why TRSTAY LUXE stands out. PDRN (Polydeoxyribonucleotide), sourced from salmon DNA, activates adenosine A2A receptors to boost collagen and repair skin at a cellular level. Paired with Stem Cell technology, it’s a powerhouse for hydration, elasticity, and wrinkle reduction—perfect for those seeking a luxurious, science-driven routine.

 

Your Top Questions Answered

Here’s a comprehensive look at the questions you’ve been asking, with expert insights to guide you.

Q1: Can I Use TRSTAY LUXE PDRN Serum Every Day?

A: Yes, daily use is not only safe but recommended for optimal results. Apply 1-2 drops morning and night after cleansing. Our NDC certification ensures the formula is gentle yet effective, even with consistent use. For best results, follow with a moisturizer to lock in hydration. If you’re new to PDRN, start with nightly application for the first week to monitor your skin’s response.

 

Q2: Is TRSTAY LUXE PDRN Serum Suitable for Sensitive Skin?

A: Absolutely, with a caveat. The serum is formulated to be non-irritating, thanks to its hypoallergenic base and NDC-approved safety standards. However, sensitive skin types should perform a patch test on a small area (e.g., behind the ear) for 24 hours before full use. If no redness or irritation occurs, incorporate it gradually—start with twice a week, then build to daily use. Consult a dermatologist if unsure.

 

Q3: How Long Until I See Results with TRSTAY LUXE PDRN Serum?

A: Visible improvements typically begin in 4-6 weeks with consistent use. Clinical studies from our Seoul lab show a 20% increase in skin elasticity and a 15% reduction in fine lines after 8 weeks. For deeper wrinkles or significant hydration needs, results may take up to 12 weeks. Patience is key—pair it with a rich night cream and SPF 50 during the day to enhance outcomes.

 

Q4: Can I Layer TRSTAY LUXE PDRN Serum with Other Products?

A: Yes, layering is encouraged! Follow the K-beauty 10-step routine’s luxury evolution:

  • Step 1: Apply a lightweight toner.
  • Step 2: Add 1-2 drops of PDRN Serum, patting gently.
  • Step 3: Follow with an essence or serum (e.g., vitamin C).
  • Step 4: Seal with a moisturizer. Avoid mixing with retinoids or strong acids initially—test compatibility over a week. Our Seoul experts recommend this sequence for maximum anti-aging benefits.

 

Q5: How Should I Store TRSTAY LUXE PDRN Serum?

A: To preserve its potency, store the serum in a cool, dry place away from direct sunlight—ideally between 15-25°C (59-77°F). Keep the bottle tightly closed after use to prevent oxidation. If you live in a humid climate (e.g., Guangdong, China), consider refrigerating it, but let it reach room temperature before applying.

 

Q6: Is TRSTAY LUXE PDRN Serum Tested on Animals?

A: No, TRSTAY LUXE is proudly cruelty-free. Our NDC certification and Seoul R&D processes adhere to strict ethical guidelines, ensuring no animal testing at any stage. We also prioritize sustainable sourcing for our Salmon DNA, aligning with global beauty standards.

 

Q7: What Makes TRSTAY LUXE Different from Other Brands?

A: Our edge lies in Korean innovation and NDC certification. Unlike many brands, we integrate PDRN and Stem Cell technology, developed by our Seoul team, to offer regenerative skincare. The luxurious texture and gold-accented packaging reflect our commitment to elegance, setting us apart in the U.S., Korean, and Chinese markets.

 

Expert Tips for Best Results

  • Consistency: Use daily for at least 8 weeks.
  • Hydration: Drink 8 glasses of water daily to support skin health.
  • Sun Protection: Always follow with SPF 50 to protect PDRN’s effects. Our Seoul dermatologists emphasize that lifestyle factors amplify the serum’s benefits.

 

Join the Conversation

Have more questions? We’d love to hear from you! Leave a comment below or contact us via our Contact Page. Stay updated with TRSTAY LUXE’s latest innovations by subscribing to our newsletter.

 

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