Cookie policy
Last updated: 13 October 2026
Cookies and similar technologies are small files or stored values that websites use to remember things and measure how they are used. This page lists what we use on circadiansignal.com and how to control it. Our privacy policy explains how the data is used.
Your choice
When you first visit, we ask whether you accept advertising measurement cookies. Choosing Reject means we won’t load the Meta Pixel or set its cookies. You can change your choice at any time with the cookie settings link in the footer. The site works the same either way.
Cookies and storage we use
| Name | Type | Set by | Purpose | Duration |
|---|---|---|---|---|
| cs_consent | Local storage (strictly necessary) | Circadian Signal | Remembers whether you accepted or rejected measurement cookies | Until you change it |
| cs_currency | Local storage (preference) | Circadian Signal | Remembers the currency you chose | Until you change it |
| cs_code | Session storage (preference) | Circadian Signal | Keeps a discount code from a link through to checkout | Until you close the tab |
| _fbp, _fbc | Cookie (marketing) | Meta | Measures visits from our Meta advertising and attributes sign-ups | Up to 90 days |
| fr | Cookie (marketing) | Meta | Delivers and measures Meta advertising | Up to 90 days |
| Cart and checkout cookies | Cookie (strictly necessary) | Shopify (our store) | Keeps your basket and checkout working | Set by Shopify. See the store privacy policy. |
Fonts
We load the Fraunces and Inter typefaces from Google Fonts. Google may log your IP address when the font loads. We don’t set any cookies for this.
How to control cookies in your browser
You can also block or delete cookies in your browser settings. Blocking the Meta cookies has the same effect as rejecting them on our site. Blocking Shopify’s cookies may stop your basket and checkout from working.