Red light or blue? Here’s the difference
Preview text: Find the light setting that fits your scalp care routine.

Using this email in an article? Credit: Hairlust email via They Sent It, with a link to this page. Full-size image
- Subject
- Red light or blue? Here’s the difference
- Preview text
- Find the light setting that fits your scalp care routine.
- From
- info@
hairlust.com - Brand
- Hairlust
- ESP
- Klaviyo
- Sent
- Wed Nov 4, 2026, 11:45 AM ET
- Sent to
- United Kingdom (hairlust.co.uk), hairlust.com, Spain (hairlust.es), Italy (hairlust.it), Japan (hairlust.jp), Luxembourg (hairlust.lu), United Kingdom (thehairlust.co.uk)
- Size
- 67 KB
- Images
- 10
- Links
- 16, 6 of them buttons
- Subject length
- 42 characters
Against Hairlust's usual
Sent in the 11 AM hour, which holds 4% of its emails; 28% arrive in the 2 AM hour. The subject is 42 characters; its average is 36.
Email headers
What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.
- From
- Hairlust <[email protected]>
- Subject
- Red light or blue? Here’s the difference
- Date
- Wed, 04 Nov 2026 16:45:06 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-34
- Return-Path domain
- send.hairlust.com
- DKIM signature
- d=hairlust.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- by recvd-…-ccprv with SMTP
- from (unnamed) by geopod-ismtpd-34 with HTTP
Other sending headers (names only): X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse, X-SG-EID, X-SG-ID, X-Entity-ID
Sent just before and after
| Nov 4, 2026 11:45 AM | Red light or blue? Here’s the difference (this email) | |
| Nov 4, 2026 1:45 AM | Punaista vai sinistä valoa hiuspohjalle? | |
| Nov 4, 2026 1:45 AM | Czerwone czy niebieskie światło LED? | |
| Nov 4, 2026 1:45 AM | Rotes oder blaues Licht für die Kopfhaut? | |
| Nov 4, 2026 1:45 AM | Rødt eller blåt lys til din hovedbund? | |
| Nov 4, 2026 1:45 AM | Rood of blauw licht voor je hoofdhuid? | |
| Nov 4, 2026 1:45 AM | Rødt eller blått lys til hodebunnen? |
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Nov 4, 2026 1:45 AM
Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Nov 4, 2026.















