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Investigate
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Clear
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 ApproachThis 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
What makes this different
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
Root Cause #1
Inflammation & Immune Balance
Root Cause #2
Microbiome Disturbances
Root Cause #3
Oxidative Damages
Root Cause #4
Blood Sugar Imbalances
Root Cause #5
Nutritional Deficiencies
Root Cause #6
Hormonal Imbalances
Hear What Others Are Saying
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2,900+ estheticians.
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Real results.
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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
Hear What Others Are Saying
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2,900+ estheticians.
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Real results.
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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
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.
Hear What Others Are Saying
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2,900+ estheticians.
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Real results.
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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
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
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2,900+ estheticians.
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Real results.
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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."