Books That I Have Published
After more than 40 years behind the chair, I've learned there's only so much you can share in a single appointment — so I started writing it all down. Below you'll find my growing collection of books, each one built on decades of real conversations with real clients about hair, scalp health, and aging gracefully with confidence. Whether you're navigating hair changes after 45 or just want a straightforward, no-jargon guide to what actually works, there's something here for you.
Your Best Hair Yet: A Botanical Guide for Women Over 45
Available in paperback and Kindle
Is your hair thinner, drier, and harder to manage than it used to be? You are not imagining it — and it is not your fault.
After 45, your hair changes. Hormones shift, the growth cycle slows, and the products you have trusted for years may actually be making things worse. Most women spend years trying product after product, never getting a straight answer about why their hair changed or what to actually do about it.
Your Best Hair Yet changes that.
Written by Master Hairstylist Renee Kortzoyler — with over 40 years of experience behind the chair — this practical guide gives you the honest, expert-backed information the beauty industry has never wanted you to have.
Inside you will discover:
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Why your hair changes during and after menopause, and what is driving it biologically
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The toxic chemicals hiding in most hair products — and exactly how to spot them on any label
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The botanical ingredients that actually nourish, strengthen, and stimulate real hair growth
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Proven techniques for washing, conditioning, and handling long hair without damage
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How to build a simple personalized routine that delivers visible results within 90 days
This is not a trend. This is not a sales pitch. This is four decades of real expertise from a stylist who has dedicated her career to finding what truly works — and sharing it with every woman who deserves better for her hair.
Your best hair is not behind you. It is ahead of you.
THE SCALP FIRST METHOD: The Botanical Guide to Healthier Hair at Any Age
Available in paperback and Kindle
You've spent years treating your hair. It's time to treat what's actually growing it.
Every shampoo, every serum, every styling product you've ever used was designed to fix what you can see — the hair itself. But hair is dead protein. It cannot heal, regenerate, or improve on its own. Everything that determines whether your hair grows in thick, strong, and healthy happens somewhere you've probably never paid attention to: your scalp.
With over forty years of experience as a Master Hairstylist, Renee Kortz has seen the same pattern play out in her chair thousands of times — women frustrated by hair that won't respond, no matter what they try, because the real problem was never the hair at all.
The Scalp First Method flips the script on everything you thought you knew about hair care. Inside, you'll learn how to identify your true scalp type, the real difference between dry scalp and dandruff, what's actually driving hair thinning and loss, which botanical ingredients are backed by real evidence, a complete step-by-step scalp care routine, and how your scalp's needs shift from your twenties through menopause and beyond.
This isn't a book of miracle promises. It's a clear, honest, professionally grounded guide to understanding your scalp as the living skin it is — and finally giving it the attention it's needed all along.
Healthier hair doesn't start with another product. It starts at the root.
The Scalp First Method Companion Workbook & Journal
Available in paperback only
Reading about healthier hair is one thing. Building a routine around it is another.
The Scalp First Method Companion Workbook & Journal is the hands-on companion to The Scalp First Method: The Botanical Guide to Healthier Hair at Any Age. Instead of another chapter to read, this is a guided 16-week practice — a place to track your scalp's real patterns, test botanical routines, and see what actually changes over time.
Inside, you'll find:
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A starting self-assessment to establish your true baseline (not a guess)
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16 weekly two-page spreads to log scalp condition, habits, and product response
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Four monthly check-ins with progress photo boxes to track change over time
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A closing reflection section to lock in the routine that worked for you
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Prompts to bring real information to your next salon visit
Written by Master Hairstylist Renee Kortz, with over 40 years behind the chair, this workbook turns botanical scalp care from a concept into a habit — one honest week at a time.
Whether you've read The Scalp First Method or you're starting fresh, this journal gives structure to the process of figuring out what your scalp actually needs.
