Consulting with cosmetic chemists, dermatologists, and beauty experts from all over this great country, we researched what worked and what didn’t work in skincare. We sought to create an all-in-one product that could replace a cabinet full of skincare creams, lotions, and serums. First, we selected a unique Vitamin C extract that is shown in studies to produce far better results than standard Vitamin C.
The serum (now sold as Dermacyl Peptide-C Radiance Serum) was developed to meet the needs of maturing skin without relying on retinol, acids, or harsh exfoliants.
Combines clinical-grade peptides to support collagen renewal
Includes stabilized Vitamin C to brighten and even tone
Lightweight, fast-absorbing, and ideal for daily use—even for sensitive skin
Shoppers who bought it at Costco said they were shocked to find something so effective and affordable.
Although it’s no longer available through Costco, the same original formula is now available directly from the brand’s website—with smaller-batch production and tighter control over shipping and shelf life.
Click here to see why Dermacyl Peptide-C Serum keeps selling out
But be warned: supply is still limited, and many of the same shoppers who cleared it out at Costco are now buying it online.
Here at TruthAboutSkin.com we have tested hundreds of skin care serums. They are sent to us every single day. After years of trying new products, we are constantly going back to Dermacyl and recommending it to our family.
Dermacyl’s Peptide-C Radiance Serum is uniquely formulated for mature skin:
Dual-action anti-aging with peptides and Vitamin C
Hydrates, brightens, and firms in one step
Dermatologist-loved and cruelty-free
Whether you’re overhauling your skincare or just refining your routine, Dermacyl delivers real results without irritation.
Want to see what it can do for your skin? Click here to learn more about Dermacyl Peptide-C Radiance Serum
Sleep: Aim for 7–9 hours—your skin repairs itself at night.
Diet: Antioxidant-rich foods (berries, leafy greens, fatty fish) support collagen.
Water: Hydration begins on the inside—drink at least 8 cups/day.
Stress management: Cortisol can degrade collagen; try yoga, journaling, or a walk.
TruthAboutSkin.com is your go-to guide for evidence-based skincare, real product reviews, and honest answers about what actually works. Stay tuned as we dive deeper into each of these critical skincare topics — and help you find what works best for your skin.
Hi, I’m Sarah. I am the founder of TruthAboutSkin.com and on a mission to bring real results to mature women who want the very best for their skin.
For months, it was one of the fastest-selling skincare products in Costco’s beauty aisle—flying off shelves four separate times before quietly disappearing.
Aging is natural, but premature aging is often preventable. Fine lines, sagging, and dull skin can show up years earlier than they should—and many of the culprits are hiding in your daily routine.
For all products featured, results may vary. Please visit the product websites for further information.
These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.
The information on this website is not intended as a substitute for professional medical advice. If you have, expect to have, or suspect you may have any medical condition, we recommend you consult with a physician.