For Licensed and Certified Estheticians

Your Acne Clients Deserve More Than a Three-Step Regimen.

This course teaches you how to clear their skin—from the inside out.

Enroll Now — $350 USD Save $200

Learn About

MBK ACNE DETECTIVE PROFESSIONAL ESTHETICIANS COURSE™

BECOME AN MBK ACNE SPECIALIST

Investigate

Understand

Clear

A young woman pointing to acne on her face

Be honest.

 

You're a skilled esthetician. But acne is still winning.

 

You recommend the right products. You build consistent treatment plans. You educate your clients on their home care. And their acne keeps coming back.

That's not a skill problem. That's a root-cause problem.

Acne is not a topical disease. It is a chronic, systemic, inflammatory condition — driven by hormones, gut health, stress, blood sugar, and nutritional deficiencies that no cleanser or retinoid was ever designed to fix. Until you understand what's actually happening inside your client's body, you're managing symptoms. Not clearing skin.

Your clients deserve better. And so does your practice.

Show Me a Different Approach

This Is For You If...

This course is for you if...

  • You're tired of watching clients cycle through treatment plans that produce temporary results
  • You want to understand hormones, gut health, and nutrition well enough to actually use that knowledge in your practice
  • You've completed another acne course (including Face Reality) and want more depth — especially on the inside-out drivers
  • You want a brand-neutral framework you can apply with any product line you already trust
  • You want to be the esthetician in your area who gets the results other practitioners can't explain
Yes — That's Me. Let's Go.

What makes this different

Tree roots image to indicate the root causes and symptoms of acne

This is not another protocol course

 

Most acne education teaches you what to do at the facial table. This course teaches you what to investigate before you ever pick up a product.

The MBK Acne Detective Course is the only esthetician acne training built on functional nutrition and holistic skin health — covering the gut-skin axis, hormonal drivers, detoxification pathways, blood sugar balance, and stress physiology alongside the clinical esthetics you already know.

It was built by Katie Marshall — Medical Esthetics Practitioner and Functional Nutrition Counselor with 18 years of hands-on clinical experience. Katie has been Face Reality certified since 2015. She built this course because she wanted something more.

Three differentiators.

Brand Neutral

Apply every principle with the skincare line you already use. No product affiliation. No upsell.

Root Cause First

You won't just learn what acne looks like. You'll learn where it comes from — and how to address it at the source.

Built for Real Practice

Done-for-you client resources, business tools, and a private community of 2,900+ acne specialists you can actually learn from.

Leading Root Causes of Acne Skin

Human Immune system and bacteria that cause inflammation.

Root Cause #1

Inflammation & Immune Balance

Colorfull mix of types of microbes found in the body

Root Cause #2

Microbiome Disturbances

Blue and rusted surface caused by oxidative damage

Root Cause #3

Oxidative Damages

Womans' red lips covered in white sugar that causes blood sugar imbalances

Root Cause #4

Blood Sugar Imbalances

A mix of nutritionaly unhealthy high-fat, high-sugar snackes

Root Cause #5

Nutritional Deficiencies

Young blond woman with face acne possibly that can indicate hormonal imbalances

Root Cause #6

Hormonal Imbalances

Social Proof

2,900+ estheticians.

Real results.

No filter.

KERRI BROOKS PENDER

Licensed Esthetician, About Face,

Tampa, Florida

"I have spent a small fortune on classes that were not teaching me anything new, it surely gets frustrating. This course is a go-at-your-own-pace and it was perfect! The information is clearly written and a wealth of knowledge. It is not focused on a product line, as most are. If you apply the information to your practice then you will not fail to help any of your acne clients. Acne is not a one size fits all type of disorder, the information provided gives you the pieces of the puzzle you are trying to solve. I promise, if you put the time in to really absorb the course you will help your acne clients. It is far more detailed about the causes of acne and how to clear it than any other course I have taken. If you have been looking for an acne course that you can take from your couch then this is for you. I am extremely grateful to Katie for creating this course! Worth every single cent!"

NAOMI MUNDY

Certified Esthetician/Skin Coach, Naomi Mundy Beauty,

Toronto, Ontario

"I'm so glad that I took the MBK Acne Detective Course! Earlier this year, I took another acne course, and while it was okay, I was still left wondering how to translate and apply what I had learned to the products that I use in the clinic. I love that the MBK Acne Detective Course is not product-dependent but also that it gave me WAY MORE information (and in more detail) than the previous course did when it comes to treating acne. Everything is broken down into digestible sizes and it's easy to understand. I feel confident in being able to better assess my client's skin and recommend the appropriate products to help their skin heal and their confidence grow."

MARLENE WOLFBERG

Licensed Esthetician & Acne Specialist,

Glendale, California

"I strongly urge you to take the MBK Acne Detective Ecourse. Katie is one of the most knowledgeable estheticians around. Her course will be worth every penny. Not only will you quickly make your money back, but it will give you a sound foundation that will give you the confidence you need to deal with clients."

VERONICA KOROLOGOS

Licensed Esthetician,

Essential Skin Care & Acne Treatment

New York

"I have to say, Katie, your course is fabulous. By far the best one I've taken. Since I've taken several I was somewhat hesitant to purchase it because I figured what more could be in it that wasn't in others, but then I reminded myself "THIS IS Katie we are talking about, of course, I'm taking this course". And I'm so glad I did. Thank you for reinvigorating my passion for treating acne."

MARIA DERKS

Licensed Esthetician, The Skin Girl,

Penfield, New York

"It’s amazing. There’s so much info and it’s so detailed. She’s an incredibly knowledgeable person. Katie’s program is way more in-depth and she has so much more knowledge on pretty much everything lol"

MARCIA SIMO

Licensed Esthetician

"Absolutely!!! Great training."

What You Will Learn

12 modules.

Everything you need to become the esthetician who actually clears acne.

Office desk with computer and stationary

Module 1

Business Fundamentals for Your Acne Practice

Desk with laptop keypad, pen, and notebook

Module 2

Business Tools for Your Acne Practice

Desk with laptop keypad, pen, and notebook

Module 3

30+ Done-for-You Client Handouts

Esthetician examining a client's skin through a machine

Module 4

Anatomy, Physiology, and the Integumentary System

Acne on the face of a young person

Module 5

Types, Causes, and the Four Drivers

A selection of healthy foods, greens, spices, dark chocolate, on a white, wooden table

Module 6

Food as Medicine for Skin

Young woman holding her stomach indicating gut health problems

Module 7

The Gut-Skin Axis

Young woman sitting on the toilet struggling with health issues

Module 8

The Liver, Emunctories, and Skin

Woman with facial acne possibly indicating hormonal imbalance

Module 9

PCOS, Perimenopause, Estrogen Dominance, and More

Young woman holding her head in her hands looking stressed

Module 10

The HPA Axis and Cortisol

Young woman holding a card of birth control pills

Module 11

What Your Clients Need to Know

Young woman stuffering with acne and rosacea on her face

Module 12

Differentiating and Treating

Bonus 5yr Anniversary Modules

Your Hormone Gut Connection

You also get 100+ Canva-ready social media images, 5 done-for-you healthy recipe books to share with clients or sell, and monthly live Acne Masterclasses with Katie — covering case studies, course content, and business growth.

Enroll Now — $350 USD Save $200

WHAT YOU WILL LEARN

Throughout the 12 comprehensive modules and 76 videos, you will learn the many root causes of acne and how to treat it from the inside out. You'll also have done-for-you handouts, ebooks, and other business tools to use for your acne business...and so much more!

Office desk with computer and stationary

MODULE 1

Desk with laptop keypad, pen, and notebook

MODULE 2

Desk with laptop keypad, pen, and notebook

MODULE 3

Esthetician examining a client's skin through a machine

MODULE 4

Acne on the face of a young person

MODULE 5

A selection of healthy foods, greens, spices, dark chocolate, on a white, wooden table

MODULE 6

Young woman holding her stomach indicating gut health problems

MODULE 7

Young woman sitting on the toilet struggling with health issues

MODULE 8

Woman with facial acne possibly indicating hormonal imbalance

MODULE 9

Young woman holding her head in her hands looking stressed

MODULE 10

Young woman holding a card of birth control pills

MODULE 11

Young woman stuffering with acne and rosacea on her face

MODULE 12

KERRI BROOKS PENDER

Esthetician/Owner, About Face Tampa

"I have spent a small fortune on classes that were not teaching me anything new, it surely gets frustrating. This course is a go-at-your-own-pace and it was perfect! The information is clearly written and a wealth of knowledge. It is not focused on a product line, as most are. If you apply the information to your practice then you will not fail to help any of your acne clients. Acne is not a one size fits all type of disorder, the information provided gives you the pieces of the puzzle you are trying to solve. I promise, if you put the time in to really absorb the course you will help your acne clients. It is far more detailed about the causes of acne and how to clear it than any other course I have taken. If you have been looking for an acne course that you can take from your couch then this is for you. I am extremely grateful to Katie for creating this course! Worth every single cent!"

NAOMI MUNDY

Certified Esthetician/Skin Coach, Naomi Mundy Beauty

"I'm so glad that I took the MBK Acne Detective Course! Earlier this year, I took another acne course, and while it was okay, I was still left wondering how to translate and apply what I had learned to the products that I use in the clinic. I love that the MBK Acne Detective Course is not product-dependent but also that it gave me WAY MORE information (and in more detail) than the previous course did when it comes to treating acne. Everything is broken down into digestible sizes and it's easy to understand. I feel confident in being able to better assess my client's skin and recommend the appropriate products to help their skin heal and their confidence grow."

Hear What Others Are Saying

2,900+ estheticians.

Real results.

No filter.

TASHA ERIKSEN

Licensed Esthetician, The Esthetician.

Apple Valley, Minnesota

"I just want to say WOW and thank you for putting together your online program and sharing your knowledge. I am Face Reality certified as well and have only begun your course and it is amazing. And the resources in the group will really help my practice.. thank you, thank you, thank you!"

NESSA RILEY

Certified Esthetician, The Remedy Room,

Edmonton, Alberta

"Yay! I purchased this course from Katie last year & definitely recommend it to anyone considering taking it. It’s definitely worth the money & was even better than I had anticipated!"

TARYN HALLAL

Licensed Esthetician, Skincare Lounge,

New Orleans, Louisiana

"Just purchased and I cannot wait to get started! I am so happy you did this- you’re such a wealth of knowledge and I love learning from you!"

TANJA RASAVONG

Licensed Esthetician, Sacred Beauty by Tanja,

Chandler, Arizona

"Yes, 100% recommended. I have been an Esthetician for over 20 years and Face Reality and MBK by Katie are by far the best trainings I invested in."

NICOLE VIOLA SPANO

Licensed Esthetician, Radiance Skin Care Salon,

North Chelmsford, Massachusetts

"Loved your course, Katie! Definitely helped elevate my acne knowledge along with Face Reality!"

LYNNE SHIRVANDEHI-GOW

Licensed Esthetician, Goddess Lynne Body & Skin,

Los Angeles, California

"Excellent course!! It’s beyond worth it!!"

What's Included

What's Included

Everything included when you enroll.

 

  • 12 comprehensive self-study modules with 70+ videos — $5,000 value
  • Business Fundamentals — guidance and support as an esthetician solopreneur — $1,000 value
  • 30+ done-for-you client handouts, rebrandable in Canva — $1,500 value
  • 100+ Canva-ready social media images for your acne business
  • 5 done-for-you healthy recipe books — rebrandable in Canva or sell them on your site — $1,500 value
  • Monthly live Acne Masterclasses with Katie — case studies, course content, business building
  • Lifetime access to the course — including all future updates and new lesson videos
  • Private Facebook community with 2,900+ acne specialists — active, supported, and priceless

Total value: $9,000+

Enroll Now and Get Instant Access
A woman looking at a body of water with arms raised in joy

Hear What Others Are Saying

2,900+ estheticians.

Real results.

No filter.

TIA PAPATHEODORE

Licensed Esthetician, A Wicked Skin & Wax Studio,

Billings, Montana

"I am loving this course so far! I’m about 1/2 way done and I’ve learned so so much so far! Thank you again for creating this training!!! Especially having it online, as I can’t travel much with 4 little ones."

LINDSAY FLINT

Licensed Esthetician, Lilac & Flint,

Sacramento, California

"For the last 8 years, Katie has blessed our group with her mentorship and knowledge. She has spent countless hours managing this (Esthetician Think Tank) group and shaping it into the wonderful group it has become! And now she has created an Acne E-Course to help further spread her vast knowledge! I personally purchased the E-Course and even though I am already a Face Reality Acne Specialist, I am learning so much!"

SANDY NELLES

Licensed Esthetician, Modfacial Bar,

Flower Mound, Texas

"Love it so far! Thank you for creating this! You have a lot of valuable knowledge, Katie."

LIZABETH KRISTIANSEN

Licensed Esthetician, Spa Liz & Co.,

Greenfield, Wisconsin

"Highly recommend MBK Acne Detective Program!"

MICELLE ANDREA

Licensed Esthetician

"1000% yes!"

ROBYN PRAZMARK

Licensed Esthetician, Skin Care by Robyn,

Littleton, Colorado

"Treating Acne with Katie will take you to the highest level of care."

How It Works

Slim womans' mid-section kept healthy as a result of healthy diet

Self-paced. Online. Yours for life.

Enroll once and get immediate access to all 12 modules, every video, every handout, and every resource. There is no schedule and no deadline. Study at your own pace, on desktop or mobile, at whatever hour your schedule allows.

Most students complete the course in about four months. You have lifetime access — including every future update and new video added to the course.

Once you complete all modules, you'll submit your Acne Skin Transformation Case Study to receive your MBK Acne Detective Specialist certificate.

MARIA DERKS

Licensed Esthetician, The Skin Girl

"It’s amazing. There’s so much info and it’s so detailed. She’s an incredibly knowledgeable person. Katie’s program is way more in-depth and she has so much more knowledge on pretty much everything lol"

MARCIA SIMO

Licensed Esthetician

"Absolutely!!! Great training."

Hear What Others Are Saying

2,900+ estheticians.

Real results.

No filter.

JESSICA JIMENEZ

Licensed Esthetician, Skin Confidence Studio, Campbell, California

"Thank you so much for sharing! I just purchased this course and OMG the load of information provided is amazing!!! I can’t wait to incorporate both Face Reality and MBK in my practice. Game changer "

CHANEL YANCY

Licensed Esthetician, Skin Envy,

Memphis, Tennessee

"I can’t say enough about this course and the dedication that Katie has put into it she is such a knowledgeable resource and very giving I hands-down recommend this course to anyone completely worth the money if not double what she actually is charging for this course it will change your business for sure."

KATHRYN BARREL

Licensed Esthetician, Skin Maven,

Owosso, Michigan

"Your set-up is excellent and worth every single penny, and so mind-boggling in depth! Thank you, Katie."

ALEXANDRIA PAQUETTE

Licensed Esthetician, Tulip & Tonic,

Middlebury, Vermont

"Holy hell that is a LOT of information!!! So excited to dive into this!!"

12 Week Acne Course

Program commences once you sign up

PROGRAM PRICING

$550USD

Coupon Code: ACNEPRO2026 (Save $200 USD)

  • Video Tutorials and handouts are accessible via Desktop or Mobile App
  • 12 online self-study course modules
  • Business Fundamentals
  • Acne Business Tools & Resources
  • Social Media Acne Images
  • Clear Skin Healthy Recipe Books
  • Monthly Acne Masterclasses
  • Access to a private support group on Facebook
  • Lifetime access to future updates to this program (NEW updated lessons and videos)
  • Bonus 5yr Anniversary Modules - Your Hormone Gut Connection
SIGN UP NOW

Program Disclaimer

The contents of this course are for educational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider before undertaking any dietary supplement or exercise program. MBK Cultivate Skin and Nutrition Wellness is not responsible for any adverse effects resulting from your use of information contained in this course.

MBK Cultivate Skin & Nutrition Wellness is not responsible for any adverse effects resulting from your use of the information contained in this course.

Hear What Others Are Saying

2,900+ estheticians.

Real results.

No filter.

BRENDA TARTER

Licensed Esthetician, Glow Girl Esthetics,

Crawfordsville, Indiana

"Totally worth it. It’s very complimentary to what you learned from Face Reality. Also, tons of pics, and more dietary and hormone info. For sure a benefit to you and your treatment of acne."

SHARON LOCONSOLO

Licensed Esthetician, Dana Point Acne Lab & Skincare Studio,

Dana Point, California

"It’s an excellent course - Money well spent! Purchasing the course gives you access to her Facebook group which is a great resource."

ELIZABETH PRICE

Licensed Esthetician, Vivid Skin,

Gilbert Arizona

"Such good info and totally recommended especially if you’ve been with Face Reality for a while. I took it after 3 years of using Face Reality and felt like it went into much more detail about hormones, cycles, and ingredients!!"

LEAH LOYNES

Certified Medical Esthetician, Essence of L,

White Rock, British Columbia

"Love the new platform. Well done!!! I'm sure you have your reasons... I think you should charge more for your acne courses. So much information in here."

MARIA PRISCILLA

Licensed Esthetician, The Beauty Plug by Maria,

Los Angeles, California

"If you’re thinking about taking an acne class. I highly recommend taking MBK Acne Detective. It is a wealth of information that I don’t think you’ll find anywhere else + constant support. Some of the key things that I’ve learned among other things is how to approach acne in a healthy way. Gut health matters and is a big factor. I learned how to repair the barrier. In some cases, acne clients over-dry their skin which makes them break out even more. She even goes over acne-safe products & ingredients. Something that was very helpful for me was I was able to post pictures of my clients and we were able to go over a treatment plan and also talk about at home regimens. She has a private Facebook group for continuing education and they also do a zoom once a month."

We've Got Your Questions Covered