Your hair plan. Finally mapped out.
The Advanced Trichology app puts the Zone Method™ in your pocket—bringing your assessment, personalized protocol, scalp images, and daily check-ins together in one place. Join the waitlist, and we’ll notify you when it launches.
Don’t want to wait? Take the Zone Hair Loss Test™ now, and
your results will be ready when the app launches.
Ask CATIA anything about hair.
Get instant, science-backed guidance on your products, protocol, results, and overall hair-health journey.
Also in the first release
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Scalp microscope
Connect your microscope for a closer look at your scalp and a clearer view of your hair health.
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Capture Your Progress
Take scalp photos to document changes and compare your results throughout your treatment.
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Daily tracking
Check off your daily essentials and extras, and take another step toward healthier-looking hair.
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Understand Blood Work
Upload your lab results to identify nutritional and hormonal markers that may be affecting your hair.
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Track Shedding Over Time
Complete Hair Pull Tests and track changes in shedding throughout your journey.
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Our Store
Shop by zone and easily reorder the products recommended for your personalized plan.
The app is not open yet. Take our free quiz instead.
Take the Zone Hair Loss Test™WHAT HAPPENS NEXT
Three steps, starting today
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STEP 01
Join the wait list
Leave your email above. One message when the app opens, nothing else.
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STEP 02
Take the Zone Hair Loss Test™
Two minutes on the site. It builds your profile and points you at the right zone — Hormonal, Nutritional or Inflammatory.
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STEP 03
Start where you are
Your protocol is on the site now. When the app opens, everything you have already answered is waiting inside it.