Privacy Policy

Last updated: July 16, 2026

Hair Theory ("we", "us", "our") provides personalized hair-care insights, product rankings, tutorials, and a community where you can post reviews and ratings. This policy explains the information we collect, how we use and share it, and the choices you have. By using the site or creating an account, you agree to this policy.

Information we collect

We collect the following categories of information:

Account and profile information — such as your email address, sign-in credentials, display name, and any details you choose to add to your profile, including information about your hair and any brand affiliation.
Content you provide — reviews, ratings, comments, images, product submissions, and anything else you post or send to us.
Usage and device information — information about how you access and use the site, including pages viewed, interactions, approximate location, and technical information about your device, browser, and connection.
Information from others — information we may receive from service providers, partners, and publicly available sources, which we may combine with the information above.

How we use your information

We may use the information we collect for any of the following purposes:

Provide, operate, maintain, and secure the site and your account.
Display the content you and others contribute.
Personalize your experience, including the products, reviews, and recommendations you see.
Analyze usage, conduct research, and measure and improve our content, products, and services.
Develop new products, features, services, and business offerings.
Understand trends and preferences, including by combining your information with information from other users and sources.
Communicate with you, including sending account, service, promotional, and marketing messages.
Display and measure advertising, and operate affiliate and referral programs — including personalizing what you see and attributing purchases made through links on the site.
Prevent fraud and abuse, enforce our terms, and comply with legal obligations.
Any other purpose described to you at the time of collection or to which you consent.

How we share your information

We may share the information we collect:

With service providers and partners who perform services on our behalf or help us operate, analyze, improve, and promote the site.
With advertising and affiliate partners — we may display advertising and include affiliate links, and we may share information such as device and usage details, identifiers, and interactions with ads or links so those partners can deliver, measure, and personalize advertising, attribute referrals and commissions, and report on performance. These partners may set their own cookies and collect information about you across other sites and over time.
Publicly — content you post, such as reviews, ratings, comments, and images, along with your display name, is visible to others and may be indexed by search engines or shared beyond the site.
In connection with a business transaction, such as a merger, acquisition, financing, or sale of assets.
For legal and safety reasons, including to comply with law or legal process, or to protect our rights, our users, or the public.
With your consent or at your direction.

Depending on where you live, some of this sharing may be considered a "sale" or "sharing" of personal information under applicable law. Where the law gives you the right to opt out, we will honor it — see "Your rights and choices" below.

Aggregated and de-identified information

We may create aggregated, anonymized, or de-identified information from the data we collect, and we may use, share, license, and commercialize that information for any purpose, including research, analytics, insights, benchmarking, and publications. This information does not identify you personally.

Cookies and similar technologies

We, our service providers, and our advertising and affiliate partners use cookies, local storage, and similar technologies to keep you signed in, remember your preferences, understand how the site is used, measure and improve our services, and deliver, personalize, and measure advertising and referrals. Some of these technologies are set by third parties and may track your activity across other sites and over time. You can control cookies through your browser settings, though some features may not work properly without them.

Data retention

We retain information for as long as we need it for the purposes described in this policy, including to operate the site, meet legal and business requirements, resolve disputes, and enforce our agreements. Retention periods vary depending on the type of information and how it is used.

Your rights and choices

You can update your profile and remove content you have posted at any time. Depending on where you live, you may also have the right to request access to, correction of, a copy of, or deletion of your personal information, to opt out of certain uses or disclosures, and to withdraw consent where we rely on it. We will respond to requests as required by applicable law, and we may need to verify your identity before acting on a request.

Note that content you have already shared publicly, and information that has been aggregated or de-identified, may remain available or in use.

Security

We use reasonable safeguards designed to protect the information we hold. No method of transmission or storage is completely secure, and we cannot guarantee absolute security.

Children's privacy

The site is not directed to children under 13, and we do not knowingly collect personal information from them. If we learn that we have collected personal information from a child under 13, we will delete it.

International users

We and our service providers may process and store information in the United States and other countries, which may have data-protection laws different from those in your own country. By using the site, you understand that your information may be transferred to these locations.

Changes to this policy

We may update this policy from time to time. When we do, we will revise the "Last updated" date above. Your continued use of the site after an update means you accept the revised policy.