Welcome to Groupon Customers

Thank you for purchasing through Groupon! You’ll receive a physical Holisys test kit in the post — this includes everything you need to collect and return your hair sample.

To ensure your kit is dispatched correctly, you must redeem your Groupon code on this page.

Please select the product you ordered from the dropdown at the bottom of this page and add to cart.

How to Redeem Your Groupon Code

  1. Select the same Holisys product you purchased on Groupon (using the dropdown below).
  2. Add it to your basket and proceed to Checkout.
  3. Enter your Groupon redemption code — price reduces to £0.
  4. Pay shipping only (£3.99).

What Happens Next

Your kit is dispatched
Once redeemed, we’ll send your kit.

Collect your sample
Collect 10–15 strands of hair.

Return your sample
Use the free return envelope provided.

Receive your results
Results processed in 3–5 working days.
You’ll receive an email when results are ready to view on your secure dashboard.

Please complete all sections during redemption to avoid delays.

Select your Groupon product

Open the dropdown, choose the exact product you purchased, then click “Select & add”.

Holisys Core Premium Sensitivity Bundle (Test + Digestive Support Drops)

Holisys Core Premium Sensitivity Bundle (Test + Digestive Support Drops)

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Holisys Radiance Premium Sensitivity Bundle (Test + Skin & Immune Support Drops)

Holisys Radiance Premium Sensitivity Bundle (Test + Skin & Immune Support Drops)

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Holisys Vital Premium Sensitivity Bundle (Test + Energy & Stress Support Drops)

Holisys Vital Premium Sensitivity Bundle (Test + Energy & Stress Support Drops)

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Holisys Complete Reset Premium Sensitivity Test (Test Only)

Holisys Complete Reset Premium Sensitivity Test (Test Only)

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If you accidentally choose the wrong one, you can remove it from your cart and select again.

Any issues with your Groupon journey?

Tap below and our team will help you with activation, postage or supplement queries.

What can we help with?

Send us your details and we’ll get back to you as soon as possible.

View our tests

Simple, Symptom-First Wellness — Without the Overwhelm

No giant item lists. No 50-page PDFs. Our premium hair-based wellness screenings focus on patterns linked to real-world symptoms — like bloating, low energy, skin flare-ups and stress — with a clean Digital Results Dashboard and free live chat support.

Why We’re Different

  • Symptom-led insights you can act on (not just numbers)
  • Clear dashboard — no long PDFs or confusing jargon
  • Physical kit delivered + free UK return postage
  • Includes your matching supplement (Core, Radiance and Vital screenings all come with the relevant vegan liquid drop)
  • Optional extra vegan drops if you want additional support beyond your included one

Balance guided by how you actually feel — not by how many items we can list.

What to Choose

  • Core Premium — gut & everyday reactivity focus
    Includes Core Balance Drops
  • Radiance Premium — skin, immune & glow focus
    Includes Radiance Drops
  • Vital Premium — energy, sleep & stress patterns
    Includes Vital Energy Drops
  • Complete Premium — our widest screening library
    No drops included

Tip: Most customers start with a symptom-based Premium screening and use their included matching drop — then add extra vegan drops if they want more support.