Cookie Policy
Last updated: November 3, 2026
This cookie policy (the "Cookie Policy") provides comprehensive and transparent information about the use of cookies and other tracking technologies on the website https://prologuelabs.com (the "Website"), operated by Prologue Bio, Inc. (“Prologue”, “we”, “our” or “us”).
We use Cookies and other tracking tools to collect and process information about your use of our Website (such as page views, URL you just came from, and you go to next), your IP address, location, browser type, operating system, the type of device you are using, device identifier, processes names. This information is used to improve the Website, your user’s experience and enhance data security measures of the Website. For more details on cookies and options for changing settings, see below.
If you have questions or concerns regarding this Cookie Policy, please contact us at: support@prologuelabs.com.
1. What is a cookie?
Cookies and other trackers (hereinafter, "Cookies") are small text files that store or retrieve information on your browser or device (computer, tablet, mobile phone, etc.) by websites that you visit.
They are widely used by website owners, including us, for technical reasons, in order to help our Website function and to increase its efficiency and security. We refer to these as “essential” or “strictly necessary” Cookies.
Other Cookies help us better understand the needs and preferences of our users, in order to improve your browsing experience, save your preferences or adapt the services offered to you on the Website. For example, some Cookies provide us with insights about the performance of certain webpages, features and content on our Website.
We use both first-party cookies and third-party cookies – which are cookies from a domain different than the domain of the Website you are visiting.
2. How to manage cookie preferences?
You can opt out of the sale or sharing of your Personal Data for targeted advertising, including through Marketing Cookies, at any time by clicking the “Your Privacy Choices” link in the footer of every page of the Website. If you also provide your email address on that page, we will apply your choice to your account. We treat a Global Privacy Control (GPC) signal sent by your browser as a valid request to opt out for that browser. Your choice applies to the browser and device you use; if you clear your Cookies or use another browser or device, you will need to make your choice again. You can also block or delete Cookies through your browser settings, as described in section 4 below. Strictly necessary Cookies cannot be switched off, as the Website cannot function without them.
3. Cookies list
The providers that set Cookies and similar technologies (such as local and session storage) on our Website are listed below by category. Cookies last from the end of your visit for up to 400 days, unless you delete them sooner. A provider may change the specific Cookies it uses; this list names every provider that sets Cookies or similar technologies on our Website.
Strictly necessary cookies
These cookies are necessary for the Website to function and cannot be switched off in our systems. Strictly necessary Cookies help make our Websites usable by enabling basic functions such as page navigation, filling in forms and access to secure areas of the website. The Website cannot function properly without these cookies.
| Provider | Purpose | Type |
|---|---|---|
| Shopify | Cart, checkout security and your privacy choices | Third party |
| Prologue | Sign-in, cart and Gray Hair Simulator session | First party |
| Cloudflare | Bot protection on the Gray Hair Simulator | Third party |
| Skio | Sign-in to the subscription portal | Third party |
| Google (reCAPTCHA) | Protects support chat messages from spam | Third party |
Functionality cookies
Functionality Cookies enable the Website to provide enhanced functionality and personalization, and store information on user’s preferences using the Website. Functionality Cookies may be set by us or by third party providers whose services we have added to our Website pages. If you do not allow these Cookies, some or all of the Website services may not function properly.
| Provider | Purpose | Type |
|---|---|---|
| Gorgias | Support chat and on-site messages | Third party |
| Prologue | Remembers notices and pop-ups you have already seen, and your scroll position | First party |
Analytics cookies
Analytics Cookies allow us to collect performance data about our Website, to count visits and traffic sources, to collect information on how visitors behave on our Website so we can measure and improve the performance of our Website. Among others, analytics Cookies provide us data on which pages are the most and least popular and how visitors move around the site, to identify first and subsequent visits, etc. If you do not allow these Cookies, we will not know when you have visited the Website, and will not be able to monitor its performance.
| Provider | Purpose | Type |
|---|---|---|
| Shopify | Store analytics | Third party |
| Google Analytics | Visitor and session analytics | Third party |
| Mixpanel | Product analytics and session replay; inputs masked and photos excluded | Third party |
| Prologue | Campaign source and linking visits to orders | First party |
Marketing cookies
Marketing Cookies may be set through the Website by our advertising and marketing partners. These Cookies may be used by such vendors and third parties to build a profile of your interests to show you relevant content and advertisements on other websites. Marketing Cookies are based on uniquely identifying your browser and internet device. If you do not allow these Cookies, you will experience less targeted advertising.
| Provider | Purpose | Type |
|---|---|---|
| Shopify | Marketing attribution | Third party |
| Klaviyo | Email and SMS marketing, sign-up forms and products viewed | Third party |
| Google Ads | Ad-click attribution, ad measurement and remarketing | Third party |
| Meta | Ad measurement | Third party |
| Elevar | Sends conversion data to Google and Meta | Third party |
4. How can I see which cookies are saved in my device and how do I change my cookies settings?
Some web browsers allow control of most cookies through the browser settings.
If you wish to know which Cookies have been saved on your device or if you can delete Cookies, you can use a parameter of your browser. To disable Cookies and limit the collection and use of information through Cookies, you can set your browser to refuse Cookies or indicate when a Cookie is being sent. The opt-out Cookie is browser and device specific and will only last until Cookies are cleared from your browser or device. You will find more information on how to do it via the following links: Firefox; Chrome; Safari; Internet Explorer; Firefox (mobile); Chrome (mobile); Safari (mobile); Microsoft Edge.
If you use another browser, you can check if the procedure for your browser is mentioned in this explanatory website.
You can find out more about cookies and how to see what cookies are on your computer, visit aboutcookies.org or allaboutcookies.org.