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    • SupraTonic® C Antioxidant & Antipollution Serum Circe Skincare SupraTonic® C Antioxidant & Antipollution Serum SupraTonic® C Antioxidant & Antipollution Serum Full Set SupraTonic® C Antioxidant & Antipollution Serum Breaker Top SupraTonic® C Antioxidant & Antipollution Serum Vials SupraTonic® C Antioxidant & Antipollution Serum SupraTonic® C Antioxidant & Antipollution Serum Vial Drip SupraTonic® C Antioxidant & Antipollution Serum Unopened Vial SupraTonic® C Antioxidant & Antipollution Serum Open Box Product Video
    SupraTonic® C Antioxidant & Antipollution Serum
    day
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    Circe Skincare SupraTonic® C Antioxidant & Antipollution Serum
    SupraTonic® C Antioxidant & Antipollution Serum Full Set
    SupraTonic® C Antioxidant & Antipollution Serum Breaker Top
    SupraTonic® C Antioxidant & Antipollution Serum Vials
    SupraTonic® C Antioxidant & Antipollution Serum
    SupraTonic® C Antioxidant & Antipollution Serum Vial Drip
    SupraTonic® C Antioxidant & Antipollution Serum Unopened Vial
    SupraTonic® C Antioxidant & Antipollution Serum Open Box
    Product Video

    SupraTonic® C

    Antioxidant & Antipollution Serum
    16 Ampoules x 2mL
    5 Stars (1) 

    Your daily antioxidant defense against environmental stressors. Ingredients in this multifunctional serum help guard against oxidative damage generated by UV, ozone, and environmental pollutants. This powerful formula works to tighten, firm, and reduce the signs of aging for a radiant, healthy complexion. Expertly designed, SupraTonic C sinks in quickly and dries fast for exceptional layering under your SPF and makeup.

    Dermatologically Tested · Clinically Tested · Hypoallergenic · Suitable for Sensitive Skin · Vegan · Cruelty-Free · Microplastic Free

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    $115.00
    $103.50
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     $115.00
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    What We’re Made Of
    • 15% Stable Vitamin C (3-0- Ethyl Ascorbic Acid): Defends
      Absorbs deeper than other forms of vitamin C and boosts skin's resistance to photoaging
    • 9.3% Fermented Rice Water: Provides Micronutrients
      Contains vitamins B1 and B2 to diminish fine lines and even skin tone
    • .5% Tranexamic Acid: Brightens
      Reduces the appearance of dark spots
    • Organic Proprietary Adaptogenic Blend: Nurtures
      Reishi mushroom, ginger root, ashwagandha, holy basil, turmeric, and spirulina
    • 80.18% Natural Origin Content

    OUR PROMISE
    •  Dermatologically Tested
    •  Clinically Tested
    •  Hypoallergenic
    •  Microbiome-Friendly
    •  Suitable for Sensitive Skin
    •  Vegan
    •  Cruelty Free
    •  Microplastic Free
    FREE FROM
    •  Silicone
    •  PEGs
    •  Parabens
    •  Phenoxyethanol
    •  Gluten
    •  Colorants
    •  Fragrance
    •  Alcohol

    Open Ampoules as instructed. Apply to face, neck, décolleté, and back of hands.

    If going outside, apply sunscreen after using this product.
    Watch How To Use Video   
    Watch How To Use Video   

    Water/Aqua/Eau, 3-O-Ethyl Ascorbic Acid (Stable Vitamin C), Propanediol, Saccharomyces/Rice Ferment Filtrate, Glycerin, Butylene Glycol, Dimethyl Isosorbide, Tranexamic Acid, Tocopherol, Panthenol, Alteromonas Ferment Extract, Curcuma Longa (Turmeric) Root Extract*, Ganoderma Lucidum (Mushroom) Stem Extract*, Helianthus Annuus (Sunflower) Seed Oil*, Ocimum Sanctum Leaf Extract*, Spirulina Maxima Extract*, Withania Somnifera Root Extract*, Zingiber Officinale (Ginger) Root Extract*, Moringa Oleifera Seed Oil, Camellia Sinensis Leaf Extract, Ethylhexylglycerin, Citric Acid, Polyglyceryl-10 Laurate, 1,2-Hexanediol, Sodium Phytate, Xanthan Gum, Cellulose Gum, Caprylyl Glycol, Centella Asiatica Extract, Corallina Officinalis Extract, Sodium Citrate, Melia Azadirachta Leaf Extract, Melia Azadirachta Flower Extract.

    *Certified Organic

    97% Agree this product penetrated the skin quickly with no greasy or heavy after-feel

    87% Saw their skin was smoother and more even after using this product

    87% Saw an increase in their skin’s glow and radiance

    86% Saw skin’s improved tone and texture after just 4 weeks

    Clinical Perception Study as reported by 31 participants after 4 weeks of use (Fitzpatrick Skin Type: I-IV).
    •  National Library of Medicine. 2019 Jul 19;1:100025
    •  National Library of Medicine. 2014 Aug;19(8):753–757
    •  Healthline.com: Tranexamic Acid for Skin
    •  Clevelandclinic.org: Melasma
    •  Reserachgate.net: Rice Water. April 2018
    ADD ON     Get the full Circē system and save
    SO, WHY CIRCĒ?

    Science is Our First Language.
    With decades of experience in high-end, clinical skincare, our multidisciplinary team has more than passion—we have credibility. And receipts.

    Circē by the Numbers

    20 plus
    20+
    YEARS OF FOUNDER EXPERIENCE
    Backed by an exceptional team of chemists, dermatologists, toxicologists, regulatory specialists and more—each one an expert in their field.
    3 years
    3
    YEARS OF FORMULA DEVELOPMENT
    By world-class Korean chemists.
    300 plus
    300+
    PEOPLE TESTED
    Rigorous safety, use and clinical testing.
    100 percent
    100%
    OF PRODUCT CLAIMS
    Statistically validated and supported by testing.

    Skincare Demystified Demonstration

    SKINCARE, DEMYSTIFIED.

    Shop Now
    CIRCĒ ESSENTIALS
    day
    day
    SupraTonic® C

    STEP 01

    Skin's Defense Barrier

    This serum protects skin from stressors—tightening and firming for a radiant, healthy complexion.

    SupraTonic® C
    5 stars
    (1)
    Add to Bag - $115.00
    night
    night
    PhytoFacials®

    STEP 02

    Mini Facial

    These Capsules remove makeup, sunscreen, and environmental impurities—prepping skin for the rest of your routine.

    PhytoFacials®
    5 stars
    (5)
    Add to Bag - $49.00
    night
    night
    HydraRet® A

    STEP 03

    Skin-Renewing

    This nourishing formula smooths wrinkles and fine lines, evens skin tone, and boosts radiance.

    HydraRet® A
    5 stars
    (1)
    Add to Bag - $135.00

    The Circē Potency Promise

    THE CIRCĒ POTENCY PROMISE

    We optimize potency and longevity with perfectly calibrated ingredients and product forms—like these light-resistant, airtight Amber Glass Ampoules.

    The result? Actives that stay active, without harsh preservatives or leaching plastic.

    Learn More
    THE CIRCĒ POTENCY PROMISE THE CIRCĒ POTENCY PROMISE
    SCIENCE-BACKED,
    SKIN-LOVED.

    By combining potent, cleanical ingredients with innovative formula preservation, we deliver intentional, exciting, results-driven rituals.

    97%
    of SupraTonic® C users saw smoother and more even skin.
    86%
    of SupraTonic® C users saw improved tone and texture.
    Before/After Circē

    Key Ingredients

    KEY INGREDIENTS
    Every potent, pure ingredient is expertly chosen. From hydration to nourishment to restoration, they team up to give your skin everything it craves.

    Frequently Asked Questions

    FAQS

    Expertly engineered.
    Carefully calibrated.
    Perfectly potent.

    The effectiveness of Vitamins C and A are directly impacted by the packaging. Packaging that allows in light and prolonged exposure to air are known to degrade Vitamin C and Vitamin A and render it ineffective. Circē’s ampoules offer formula preservation by limiting exposure to light, air, and interaction with your hands.
    Learn More   
    Once attached, leave the nozzle on your Ampoule between uses. When the Ampoule is empty, transfer the nozzle to a new one. Before storing or traveling, make sure the nozzle is securely attached and its cap is closed. Keep the Ampoule upright during storage and place it in a protective, leak-resistant pouch for travel.
    Circē Ampoules come with a reusable nozzle that ensures product integrity. We package our serums in small amber glass Ampoules designed to protect formula potency, so you can finish each one within a short time, then open a new Ampoule of serum preserved in potency-protecting packaging.
    To open our 2mL Ampoules, watch this How To Video:
    Watch How To Use Video    Watch How To Use Video    Note: If you don't have the Ampoule Opener, you can still open the container.

    Here's How: Hold the ampoule in one hand. Locate the white dot on the ampoule top. With your other hand, wrap a tissue around the neck of the ampoule and use your thumb to press against the white dot, snapping the top off. Then apply the Nozzle and dispense the product into your hand.
    Real science, real research, real results.

    Reviews

    5.0
    (1)
    Absolutely Wonderful
      |   Age: 40-55

    I've been using Supratonic C for about a month, and it’s been a great addition to my skincare routine. I have oily skin, so I’m always cautious with serums—but this one impressed me right away with its lightweight texture. It blends effortlessly into the skin without feeling greasy or heavy. What I love most is how refreshing it feels during application, almost like a light veil of hydration. Over the past few weeks, I’ve noticed that my skin looks visibly brighter and feels much softer. There's a nice, healthy glow that wasn’t there before. I haven’t experienced any irritation or breakouts, which is a huge plus for my skin type. Overall, I’d definitely recommend Supratonic C to anyone looking for a gentle yet effective Vitamin C serum, especially if you have oily or combination skin.