Site analytics
We use Plausible and Google Analytics 4 to understand which pages and tools people use. They receive page-view information and general actions, such as using a calculator, opening a result or downloading a file.
These requests include browser and connection information, including your IP address. Google Analytics runs with analytics and advertising consent denied. It can still send cookie-free measurement requests. We send Google a page address without its query string, fragment or referring address.
Plausible measures visits without cookies and can report time spent and scrolling. We send it a page address without its query string or fragment. It also receives the referring page address when your browser provides one.
Prices you enter, measured doses, search text, contact fields and routine notes are not included in the action information we send.
If you are in the EU, the EEA or the UK
We rely on legitimate interests to run aggregate, cookie-free measurement of which products and guides are useful. Because analytics and advertising storage are denied by default, we do not ask for consent to set tracking cookies, and none are set.
Our measurement and hosting providers sit outside the EEA. Google LLC (Google Analytics), Amazon (product photographs and product links) and our own Plausible instance receive connection information, including your IP address, when a page or an image loads. Standard contractual clauses cover the transfers our providers operate under.
You can ask what we hold about you, ask for it to be deleted, or object to this measurement. We hold no account, no mailing list and no identifier for you, so the practical answer is usually that there is nothing to return. Nothing you enter about your own hair is ever sent to us. Use the contact page and we will answer.
If a display advertising network is added to this site later, it will bring its own vendors and its own consent request, and this page will say so before that happens.
The other companies involved
Cloudflare routes and protects the domain. Plausible Analytics, our own instance, measures page visits. Google Analytics measures page visits and product actions in the denied-storage state described above. Amazon serves product photographs at page load and receives the request when one is displayed, and records the referral when you follow one of our product links, which is how the site is funded.
Nobody else is involved: there is no advertising network, no email provider, no comment system and no embedded video. Following any product or source link opens a site with its own privacy practices, and no purchase is processed here.
Your routine and calculations
There is no account or server-side routine history. Tool inputs remain in the page memory and are cleared when you reload or leave. Printing uses your browser print dialog. Product comparison links can carry public product identifiers in their URL; do not put personal information in a shared URL.
A routine link you choose to copy includes selected products, enabled steps and the two color-service settings. Opening that link restores those choices. Prices and measured amounts are not included in routine links.
When you visit a shop
A retailer link takes you to that retailer, whose privacy and cookie policies then apply. The current links have no affiliate tracking tag. Authorized product photos, when enabled, load from Amazon image servers; those requests expose normal connection information such as an IP address. Photos are omitted when image metadata is missing or expired.
Contact requests
Contact delivery is disabled in local review. After activation, the portfolio form uses Cloudflare Turnstile and a Cloudflare Worker to send selected fields to a private Discord operator channel. The form does not create a site account or write to a site database. Provide only information needed to explain the issue, and do not include medical records, passwords, payment information or other sensitive material. Use the form for privacy and rights requests too.
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