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  • TWIN-C to GO


TWIN-C to GO with its modern, elegant and discreet design will be your daily companion used as a key ring or hung on your bag.

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  • Your new life companion


    TWIN-C supports you on a daily basis, by measuring all the environmental factors likely to attack your body, in particular your skin and hair.


    Connected to the IEVA mobile application, it becomes a life coach that protects you from the harmful effects of environmental stress by guiding you on the actions to follow to preserve your beauty capital.


    A jewel - 2 uses


    Nomadic mode: Worn on your wrist, hung on your bag or as a key ring, TWIN-C is in nomadic mode. It measures and analyzes in real time the environment around you as well as your physical activity to allow you to act...


    Indoor mode: When placed on its charging base, TWIN-C switches to Indoor mode and becomes a great tool for analyzing the air quality of your home.


    The functions


    Journal: Find the summary of the data measured by your TWIN-C every day, along with perfectly personalized advice, tips and recommendations.


    Blog: Find a multitude of articles, recipes, tips, ... on various themes ranging from beauty to lifestyle, nutrition and well-being.


    Your Beauty Ritual: Find the daily steps of a beauty ritual that is perfectly suited to your environment.

  • Product recommendation


    Thanks to this continuous data collection and the use of artificial intelligence algorithms, IEVA offers you an unprecedented level of expertise.


    Every day, TWIN-C allows a very high precision diagnosis to offer you a beauty ritual combining IOMA products in perfect harmony with your environment and your needs.

  • Environmental measures


    Behind the TWIN-C jewel, hides a concentrate of technologies integrating sensors capable of continuously quantifying your environment, to understand its impact on your organism.


    The sensors measure:


    air pollution (fine particles, ozone, carbon dioxide, etc.)
    the humidity rate
    ambient noise
    UV-A, UV-B and UV index
    the luminosity


    The IEVA application allows the user to visualize these various data collected and to know the environment in which he operates. It is a daily guide with recommendations for actions to take against the effects of environmental stress.

  • Find all the useful information for understanding and anticipating environmental factors on the IEVA mobile application available on


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  • Dimensions

    Dimensions: jewel 45x38 ø x12.5 mm, hanger 50 mm, loop 38 mm ø

    Material: silver metal, silicone hook, metal buckle

  • Sensors

    Volatile organic compounds (VOC) and carbon dioxide (CO2) sensor

    Noise level sensor

    Temperature and humidity sensor

    Brightness sensor

    UV-A and UV-B sensor

    Activity sensor


  • Battery

    Lithium polymer (LiPo), Autonomy 5 to 6 days, Charging 3h +/- 30mn

  • Compatibility

    Application available Google Play / Apple Store iOS 10.0 or higher Android 4.1

  • Connectivity

    Bluetooth Low Energy BLE 4.2

  • Your loyalty
    rewarded 1€ spent =
    1 reward point

  • 100% secure
    payment Visa, Mastercard, Amex
    Paypal, Alipay, Giropay*

  • Samples
    offered* Try our products
    before buying

  • 48h free delivery
    from 60€* Straight to your door
    in less than 72h

  • Free product
    returns* Your product
    reimbursed 100%

  • Customer
    Service Do you have
    a question?

Quality commitments

Advanced engineering
Revolutionary patented technology.
Born on the premises of IEVA, the microsystems encapsulated at the base of TWIN-C are the culmination of more than 10 years of research and development on personalized beauty.

Use a soft, dry cloth.

All IEVA products are guaranteed for 2 years.


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