Banner Image

Natural Nail Treatment – ​​Starter Class + One Day Exclusive By Michella Bella | 4 Days

Do you dream of working professionally as a nail technician?
Don't worry, we're here for you! At Dutch Nail Cosmetics, we offer the training you need to launch your career as a nail technician. We start with comprehensive training in the NN Treatment, an essential technique that will form the foundation for all your future work. During our classes, you'll not only learn all the techniques but also be in an environment full of like-minded people who, like you, share a passion for the nail industry.

What is a NN Treatment (Natural Nail Treatment)?
An NN Treatment (Natural Nail Treatment) is, as the name suggests, a treatment for natural nails, and it's the ultimate treatment that creates strong, natural-looking, and perfectly finished nails. An NN Treatment (Natural Nail Treatment) combines a sleek cuticle finish with the perfect application of NN Gel/Builder | Extend Gel.

Who is this training intended for?
This comprehensive 4-day course is specifically designed for beginners who want to start with the NN Treatment from the ground up and immediately take it to the next level. The first three days are led by our own Dutch team, where you'll learn all the basic skills. On the fourth day, none other than our guest instructor Michella Bella will take over, and under her guidance, you'll learn everything about applying a Dual Forms set to extend your nails.

What will you learn?
During this practical training, you'll learn step-by-step how to work safely, hygienically, and technically correctly with various products and techniques. After completing this training, you'll master the complete basics of an NN Treatment, including perfect preparation, product application, and applying Dual Forms using professional techniques!

Our class times – please check carefully which day your course is scheduled for:

Monday: 10:00 AM - 4:00 PM
Tuesday: 2:00 PM - 8:00 PM
Friday: 10:00 AM - 4:00 PM
Saturday: 10:00 AM - 4:00 PM

  • The training will take place on: Emmy van Leersumhof 4, Rotterdam;
  • The training is given in Dutch;
  • Previous education: not required;
  • Including a catered lunch – Please let us know if you have any food allergies or dietary requirements when registering;
  • After completing the training you will receive a certificate.

The Natural Nail Treatment – ​​Starter Class + One Day Exclusive by Michella Bella consists of 4 days, during which we will train you to become an all-round nail stylist:

Day 1

Theory about:

  • Anatomy of the nails;
  • Explanation about our products;
  • Hygiene;
  • Electric manicure.

In practice we will carry out:

  • Pretreatment of the natural nail;
  • Electric manicure;
  • Gel polish on natural nails.

Day 2

Theory about:

  • Nail disorders;
  • Products and materials;
  • File technique.

In practice we will carry out:

  • Pretreatment of the natural nail;
  • Manicure to perfection;
  • Application of NN Gel;
  • How to draw a French manicure.

Day 3
Theory exam

In practice we will carry out:

  • Post-treatment with application of Builder | Extend Gel (Full color);
  • Placing small extensions using Dual Forms;
  • Laminating;
  • Advice on how to win customers.

Day 4 - with Michella Bella

Theory about:
Dual Forms technique

In practice we will carry out:

  • Pretreatment of the natural nail;
  • Manicure to perfection;
  • Application of the Dual Forms;
  • Basic photography for salon presentation and social media.

Yes, for this training you will need models:

  • Day 1: Work on your own hand. Make sure there's no product on your nails. You won't need a model this day;
  • Day 2: Bring a model with good cuticles and a healthy, clean nail plate;
  • Day 3: Bring a model you've practiced on previously. We'll do the finishing touches on this model.
  • Day 4: Work on your own hand. Make sure there's no product on your nails. You won't need a model this day;

Total price:
€800.00 excl. VAT + the lesson package costs of €250.00 or €410.00 excl. VAT.

1. When you register online, you pay a deposit of €100.00 excluding VAT . The remaining amount of €700.00 excluding VAT is due on the first day of class.
2. The NN Basic Exclusive Package costs €250.00 excluding VAT or the NN Luxury Exclusive Package costs €410.00 excluding VAT. The course package is required for this training, so everyone works with the same materials and can follow the lessons optimally. More information can be found below.

  • Cleaner (100 ml)
  • Prep & Prime (100 ml)
  • Bonding Primer (15 ml)
  • Basecoat 1 (15 ml)
  • Basecoat 2 (15 ml)
  • NN Gel (2 pcs, 15 ml)
  • Builder | Extend Gel (30 ml)
  • Gel polish (15 ml)
  • Shine Topcoat (15 ml)
  • Cuticle Oil (10 ml)
  • Halfmoon File – 150/180 grit (2 pieces)
  • Buffer File Deluxe - 100/150 grit
  • Straight Wooden File - 180/180 grit
  • Nail Wipes
  • Mini Manicure Brush
  • Duo Brush (Fine Liner + Gel Brush Oval)
  • Nail Forms
  • Dual Forms Square Free Edge & Universal
  • Rosewood sticks
  • Combi Manicure Set
  • LED Lamp Pearl For Professionals - White

Price: €250.00 excl. VAT

  • Cleaner (100 ml)
  • Prep & Prime (100 ml)
  • Bonding Primer (15 ml)
  • Basecoat 1 (15 ml)
  • Basecoat 2 (15 ml)
  • NN Gel (2 pcs, 15 ml)
  • Builder | Extend Gel (2 pcs, 30 ml)
  • Gel polish (2 pieces, 15 ml)
  • Shine Topcoat (15 ml)
  • Cuticle Oil (10 ml)
  • Halfmoon File – 150/180 grit (2 pieces)
  • Buffer File Deluxe - 100/150 grit
  • Straight Wooden File - 180/180 grit
  • Nail Wipes
  • Mini Manicure Brush
  • Duo Brush (Fine Liner + Gel Brush Oval)
  • Nail Forms
  • Dual Forms Square Free Edge
  • Rosewood sticks
  • Combi Manicure Set
  • LED Lamp Pearl For Professionals - White
  • Flash LED Lamp For Professionals
  • Marathon Champion 3 Electric Mill

Price: €410.00 excl. VAT

Date(s) :


November 14, November 21, December 5 and December 13, 2025

View our other courses