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Tina K Skin

COPPER•K | GHK-CU | BIOIDENTICAL

Regular price
$130.00
Regular price
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$130.00
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The Story ✨

COPPER•K

Super Strength GHK-Cu Peptide Serum

Meet the peptide powerhouse. COPPER•K is our high-strength GHK-Cu serum—an advanced, water-based copper peptide treatment designed to visibly rejuvenate skin at the highest level. Naturally occurring in plasma, this powerful signaling molecule is known for supporting the look of firmer skin, improved elasticity, smoother texture, softened fine lines, and a more youthful glow.

 

This is not your average copper peptide. Not all GHK-Cu is created equal, and COPPER•K was designed at a higher strength for next-level results. Skin recognizes it beautifully, absorbs it with ease, and gets right to work. This peptide helps support skin renewal by attracting immune-supporting activity and rejuvenating fibroblasts—the cells responsible for producing healthy connective tissue.

The result? Skin that looks stronger, calmer, firmer, smoother, and more even-toned. COPPER•K also helps minimize the appearance of irritation, supports the look of broken capillaries, and helps improve the appearance of discoloration, including melasma, in a naturally elegant way.

WHY IT’S DIFFERENT

  • High-strength GHK-Cu peptide technology
  • Supports collagen, elasticity, and firmness
  • Helps improve the look of fine lines and skin fatigue
  • Visibly calms the appearance of irritation
  • Supports a smoother, stronger-looking skin barrier
  • Water-based formula layers beautifully into your regimen
  • Clean, advanced skincare at its finest


HOW TO USE

Apply COPPER•K once daily right after toner, before oils, moisturizers, and SPF. Because it is water-based, it should always go on first in your treatment steps.

For an elevated ritual, use with light microneedling:

Microneedle lightly, apply COPPER•K, then gently microneedle again. Do this up to 3 times per week. On the remaining days, use it as a standalone serum after cleansing and toning.

Follow with your favorite face oil, moisturizer, and sunscreen as needed.

STORAGE

Keep COPPER•K away from direct sunlight and store in a cool place, such as a drawer or cabinet, to preserve potency.

THE BOTTOM LINE

If you love clean skincare with serious performance, COPPER•K is in a category of its own. Potent, elegant, and visibly effective—this is the kind of formula that makes you do a double take.

Get ready for something different. Get ready for results.

1oz | Glass bottle with dropper 

Inside The Formula ✨

Aqua (Water), Acetyl Hexapeptide-8, Glycerin, Panthenol, Phenoxyethanol, Ethylhexylglycerin, Allantoin, Sodium Hyaluronate, Copper Tripeptide-1, Citric Acid

Application Ritual ✨

• Twice daily = optimal transformation
• Once daily = great starting point
• Never mix with strong acids or low pH vitamin C in the same routine

    COPPER•K | GHK-CU | BIOIDENTICAL
    FREE SHIPPING on all orders over $100
    10% OFF your first order | Use code: FIRST10

    Why TINA•K?

    • Clean meets science Skincare

      Transparency you can read about — visit our blog

    • International Delivery

      DHL International Shipping to France, the UK & Canada.


    • Sustainability

      Glass to reuse. Tubes to recycle.


    • PRIVACY

      We respect your privacy. Your information never leaves Tina K.

    “You shouldn’t have to choose between protecting your skin and nourishing it. Topical vitamin D3 lets you do both.”

    – TINA•K

    FAQs

    Are your products organic / natural?

    Our Ingredient Philosophy

    Tina K skincare, body care, and bath products are thoughtfully formulated with a balance of organic botanicals and advanced scientific ingredients. We believe truly corrective skincare happens when nature and science work together in perfect synergy.

    Botanical ingredients support the skin with nourishment and wellness, while clinically studied actives deliver the efficacy and corrective results your skin needs.

    Our philosophy is simple: care deeply about health and wellness, while remaining uncompromisingly results-driven. Each formula is intentionally crafted so every ingredient works together to support stronger, healthier, more radiant skin. ✨

    Do your products contain fragrance?

    At Tina K, fragrance is intentional. Our products are either lightly kissed with the cleanest fragrance available or completely fragrance-free—giving your skin exactly what it needs, nothing it doesn’t. We do not use any Prop 65–listed fragrances, and every formula is designed to feel fresh, natural, and effortlessly clean. From body oils to skincare, you’ll always have the option to go scent-free or subtly scented—never overwhelming, always elevated.

    Is there talc in any of your products?

    Talc-Free Commitment

    All Tina K products are 100% talc-free. We believe beauty should support both health and wellness, which is why our formulas are thoughtfully created without talc.

    Our approach is simple: keep your beauty routine clean, conscious, and skin-supportive so you can enjoy products that feel as good for your health as they do for your skin.

    What is the shelf life of my product?

    All Tina K skincare products have a 12-month shelf life after opening, also known as the Period After Opening (PAO). This standard applies across our entire skincare system.

    After 12 months, the formula may still be enjoyable to use, but the potency and efficacy of the active ingredients can begin to decline. For best results and optimal performance, we recommend using your product within this one-year window after opening.

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