Privacy

Privacy and affiliate policy

Last updated October 2026.

Analytics

We use Google Analytics 4, loaded through Google Tag Manager, to count visits and see which pages and tools are used. Google may set cookies and process your IP address and device information for this. You can block it with your browser settings or an extension.

The scalp map

The scalp map runs in your browser. Your answers about duration and symptoms are never sent anywhere. We record one anonymous event when it shows a result, with the area you picked (for example “crown”) and nothing else.

Affiliate links

Links on this site whose address starts with /go/ lead to brand or retailer stores. Some of them are or will become affiliate links: if you buy, the store may pay us a commission at no extra cost to you. The store’s privacy policy applies once you leave this site.

Local storage

If you close the product bar at the bottom of the screen, your browser remembers that for six hours. Nothing else is stored.

Contact

Questions about privacy: hello@pdrn.hair.