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KX2By Kronos
Start KX2
KX2By Kronos
Start KX2

Feel like yourself. More consistently.

Your body changes. Your days change. Your hydration should too.

KX2 is a personalized, measurable hydration protocol designed to help women stay clearer, steadier and more in control throughout the day.

See how KX2 worksExplore the Science

Hydrate smarter. Not more.

A woman in her forties sits in a boucle armchair by a tall window, chin resting on her hand, a KX2 bottle on the stone table beside her.

Francesca Caracciolo, 42

You optimize almost everything. Why are you still guessing hydration?

Early morning: just awake in linen sheets, she checks how she slept on her phone.
Sleep, tracked:7h 40m
Mid-morning: on a sunlit path after a brisk walk, she lifts her wrist to read her fitness watch.
Heart rate, tracked:68bpm
Midday: at a stone kitchen island, she logs her lunch bowl on her phone.
Calories, tracked:1,240kcal
Late afternoon: at her desk, fitness watch on her wrist, she holds up a nearly empty glass of water and studies it, unsure.
Hydration, not measured: “I think I drank enough today.”

What if you didn’t have to guess?

Measure what used to be guesswork.

A short face scan captures a physiological signal and turns it into your KX2 Score — showing where you are now.

From there, KX2 helps you:

  • Stay in range
  • Learn your rhythm
  • Personalize what comes next

KX2 Hydration Protocol

Stay in your KX2 target range.

KX2 starts with a target range of

50–80

with the aim of spending

80%

of your tracked day within that range.

Continuous Hydration Management (CHM): A time-in-range approach adapted for hydration. Illustrative day of KX2 scores, 6am to 10pm: below the KX2 target range of 50 to 80 on waking (next step: a glass of water mid-morning.), then inside it from about 9am through the evening — 80% of your tracked day in the range.

Over time, KX2 learns from your rhythm to make guidance more relevant to you.

Stay in your range. Stay in your rhythm.

Built with women in mind.

A magnesium-forward electrolyte blend with sodium, potassium and calcium, developed with midlife women’s changing physiology and hydration needs in mind.

Know where you are. Know what to do next.

KX2 turns each scan into a clear next step — and, over time, a pattern you can learn from.

  1. 01. Check in & scan

    Your scan generates your KX2 Score.

  2. 02. See your range

    See where your score sits within the KX2 target range.

  3. 03. Take your next step

    Get one clear action based on where you are now.

  4. 04. Understand your pattern

    See how your scores change across your days and different contexts.

  5. 05. Stay in your rhythm

    Know when to respond — and when to simply maintain.

  1. Check in & scan

    Your scan generates your KX2 Score.

  2. See your range

    See where your score sits within the KX2 target range.

  3. Take your next step

    Get one clear action based on where you are now.

  4. Understand your pattern

    See how your scores change across your days and different contexts.

  5. Stay in your rhythm

    Know when to respond — and when to simply maintain.

Personalized guidance, adapted to your day.

Your hydration doesn’t exist in isolation.

KX2 learns from your activity, environment, cycle context and history over time — so your guidance can become more relevant to you.

  • ActivityOptional

    Workouts, walks and busy days.

  • EnvironmentOptional

    Heat, travel and long days indoors.

  • Cycle contextOptional

    One signal among several, only if you share it.

  • History

    How you’ve been hydrating, over time.

Kronos Coach, the KX2 guide

Kronos Coach

Here for you

Today

  1. Good morning. Let’s shape today around you.

  2. Evening walk at six.
    Logged · Activity

  3. Lovely. I’ll pace your guidance around it.

  4. It’s really warm out today.
    Logged · Environment

  5. Warm days ask a little more of you. I’ll keep that in mind.

  6. Sharing my cycle context.
    Logged · Cycle context

  7. Thank you for trusting me with that. It’s one signal I weigh alongside the others.

  8. How have my mornings been?
    Logged · History

  9. They often start below your range. Let’s begin gently.

  10. Your plan now moves with your day — designed to help you stay in your range. I’m right here with you.

Hydration isn’t the outcome. Your day is.

Hydration is one fundamental factor that can influence how you feel and perform, and now you can see and manage it more intentionally.

  • A woman writes in a notebook at a sunlit table, a glass of water beside her.

    Clearer

    Support better focus and mental clarity.

  • A woman walks through a sunny courtyard with a tote bag and a KX2 bottle.

    Steadier

    More consistent hydration through demanding days.

  • A woman leans on a kitchen counter, smiling at her phone, a KX2 bottle beside her.

    More in control

    See your pattern. Understand your next step. Make decisions with more confidence.

Brighter days.

More clarity. More steadiness. More confidence.

Feel like your brighter self.

A woman walks along a sunlit path through a meadow of pale grasses and wildflowers, a KX2 bottle in her hand, the countryside opening out behind her.

Everything works together.

One connected KX2 experience — bringing your KX2 Score, your next step, your KX2 Protocol and personalized discoveries about your rhythm together.

  1. KX2 Smart App

    See your KX2 Score, history, hydration patterns and overall discoveries in one place.

  2. KX2 Protocol

    Get personalized guidance and one clear next step to help you stay within your KX2 target range for more of your waking time.

  3. KX2 Daily Hydration Protocol Pack

    A magnesium-forward electrolyte formula designed with women’s hydration needs in mind.

  4. KX2 Bottle

    A premium 1 L everyday bottle designed to make the routine easier to follow.

  5. KX2 Smart Bottle

    Coming soon. A connected bottle designed to make intake tracking more effortless.

KKX2 Protocol

Next step

Nothing to add. Keep your usual rhythm.

A KX2 Daily Hydration Protocol Pack sachet.
The KX2 Bottle: a 1 L cream bottle with a carry handle and the KX2 wordmark in plum.
KX2 Smart Bottle, coming soon: a sculpted connected-bottle concept with a soft light under its cap and a glowing base.
KX2 Smart App
See your KX2 Score, history, hydration patterns and overall discoveries in one place.
KX2 Protocol
Get personalized guidance and one clear next step to help you stay within your KX2 target range for more of your waking time.
KX2 Daily Hydration Protocol Pack
A magnesium-forward electrolyte formula designed with women’s hydration needs in mind.
KX2 Bottle
A premium 1 L everyday bottle designed to make the routine easier to follow.
KX2 Smart Bottle
Coming soon. A connected bottle designed to make intake tracking more effortless.

Clear science. Clear choices.

See what the evidence supports, what KX2 is still learning, and how your data is used.

The KX2 system on a travertine ledge: the plum box open with the KX2 Bottle and a row of Daily Hydration Protocol Pack sachets, and a phone leaning against it showing the KX2 app — today's score, 66.

Start from where you are.

Build your personal hydration intelligence.

Your KX2 Score, personalized guidance, KX2 Protocol and daily hydration support — brought together in one membership that learns with you over time.

Your KX2 Starter Kit

  • KX2 Daily Hydration Protocol sachetsA month of daily hydration support, with a little extra built in.
  • KX2 BottleYour 1 L bottle, included with your first KX2 kit.
  • Full access to the KX2 Smart App

Your monthly refill

  • KX2 Daily Hydration Protocol sachetsYour next month of hydration support, delivered without another bottle.
  • KX2 Smart App access continues

A system designed to become more useful over time.

The KX2 bottle.

KX2 Membership

$100per month

Your complete KX2 experience — personal hydration intelligence plus daily hydration support, delivered each month.

Every month

  • KX2 Daily Hydration Protocol sachetsDaily hydration support, formulated with women in mind.
  • Full access to the KX2 Smart AppYour KX2 Score, guidance, protocol, patterns and discoveries.

When you joinYour KX2 Bottle (1 L) is included with your first delivery.

Join the KX2 Waitlist

Be among the first to hear when KX2 becomes available.

A woman seen from behind on a sofa, a KX2 bottle in her lap, looking out at hills in golden evening light.

Better hydration. Better days.

Start KX2Explore the Science