Free shipping in Ireland, always · Free shipping worldwide on orders over €30
Alert. UV Patches 24 pack
Two sheets of Alert. UV patches — clear before UV exposure
1Patch on first — bare skin 2Suncream on top 3Wait 30 min → goes clear. Purple = reapply
€9.99 · Free shipping
Free shipping — always · 30-day returns

See When
The Protection
Stops.

The moment your sunscreen wears off, your Alert. patch turns purple — a clear signal that it's time to reapply. One patch, worn all day. No guesswork, no getting caught out.

Shop Now — €9.99 See How It Works The Science
24
patches per pack
UV
reactive ink
1
patch lasts all day
🌞
UV Reactive
Turns purple when your SPF wears off
💧
Water Resistant
Stays on through swimming & sweat
✅
Easy To Apply
Peel, stick and go
🚀
Free Shipping
Always free within Ireland
How It Works

One patch. The whole day.

Stick one patch on in the morning and it works all day — it resets itself every time you reapply sunscreen. No new patch needed, no guesswork.

01
✍️
Stick On One Patch
Apply a single Alert. patch to clean, dry skin on the wrist, arm, knee or leg. One patch is all you need for the entire day.
›
02
🌞️
Apply Sunscreen
Apply your SPF 30+ over your skin as normal. The patch sits on bare skin and reads UV through the SPF layer.
›
03
Patch Goes Clear
After 30 minutes the patch clears. While it stays clear, your sunscreen is still active.
›
04
Purple = Reapply
When your SPF breaks down the patch turns purple. Just reapply sunscreen — the same patch resets and keeps working. You never need a fresh patch when you top up your suncream.
Alert UV 24 Pack Reactive Patches
Alert. UV Patches — 24 Pack

Sun safety
you can actually see.

  • ✓Turns clear when SPF is active, purple when it wears off
  • ✓One patch lasts all day — resets every time you reapply sunscreen
  • ✓Water and sweat resistant
  • ✓24 patches per pack
€9.99
= €0.42 per patch
✓ Free shipping — always, no minimum
🔒 Secure checkout · 30-day returns · Ships in 1–2 days
Early Tester Reviews

People love Alert.

How we collect reviews: these are from our first testers, each of whom received a free pack from us. They are published with permission, unedited, and are not verified purchases.

★★★★★
"Genuinely such a clever product — I was blown away."
Hannah
Gifted a free pack
★★★★★
"An absolute lifesaver for remembering to reapply."
Dearbhla
Gifted a free pack
★★★★★
"Brilliant on holiday — told us exactly when to reapply so we never got caught out."
Jane
Gifted a free pack
★★★★★
"Really practical — I always knew when to top up my sunscreen."
Eric
Gifted a free pack
★★★★★
"Out of this world — such a clear signal, made reapplying simple."
James
Gifted a free pack
★★★★★
"Perfect for my interrailing trip around Europe — kept me on top of reapplying the whole way."
Dylan Colmer
Gifted a free pack

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