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Nail Extension Course
More than 2 million students worldwide

Nail Extension Course

4.4

Take your passion for nails and turn it into a professional skill set that pays. This comprehensive nail extension course covers everything from acrylic and hard gel to soft gel and Gel-X systems, giving you the technical foundation to deliver flawless results every time. Whether you're starting from scratch or leveling up, this training gets you behind the table with confidence.

Dedika for Business

What you will learn:

In this course, you will learn how to safely prepare natural nails, apply and finish acrylic, hard gel, and soft gel extension systems, and master a full range of nail shapes from square to stiletto. You will study nail anatomy, sanitation standards, and client consultation so every service you deliver is safe and professional. The curriculum also covers nail art techniques, color theory, and specialty finishes that increase your service value. On the business side, you will learn how to price your services, build a portfolio, and use social media to attract and retain clients. By the end, you will have the complete technical and professional toolkit to work confidently as a nail extension specialist.

How you study in practice Nail Extension Course

How you practise Nail Extension Course

For companies looking to train their team

With Dedika for Business, the course includes exercises and examples tailored to your own business and the way your company needs.

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Course Content

8 Chapters • 40 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Foundations of Nail Technology

  • Lesson 1 • Professional Tools and Their Uses

    Introduces files, buffers, pushers, nippers, and brushes. Correct tool selection directly impacts extension quality and client safety.

  • Lesson 2 • Client Consultation and Contraindications

    Trains students to assess client health history and nail condition before service. Identifying contraindications prevents adverse reactions and liability.

  • Lesson 3 • Salon Hygiene and Sanitation Standards

    Teaches disinfection, sterilization, and waste disposal protocols. Proper sanitation protects clients and meets professional regulatory requirements.

  • Lesson 4 • Workplace Safety and Ergonomics

    Addresses chemical exposure limits, ventilation, and posture. Safe working habits protect long-term technician health and career longevity.

  • Lesson 5 • Nail Anatomy and Physiology

    Covers nail plate structure, matrix, bed, and surrounding skin. Accurate anatomy knowledge prevents damage during prep and application.

Chapter 2See details

Nail Preparation Techniques

  • Lesson 1 • Assessing Natural Nail Condition

    Teaches visual and tactile evaluation of nail health before prep begins. Accurate assessment determines the correct prep intensity and product choice.

  • Lesson 2 • Cuticle and Skin Preparation

    Instructs safe cuticle removal and skin retraction techniques. Clean cuticle areas prevent lifting and product contamination at the proximal fold.

  • Lesson 3 • Nail Tip Application Basics

    Introduces tip sizing, blending, and adhesive application as a prep step. Properly fitted tips form the scaffold for all extension product systems.

  • Lesson 4 • Shaping and Filing the Natural Nail

    Covers filing direction, grit progression, and shape fundamentals. Proper shaping creates the structural base that supports extension alignment.

  • Lesson 5 • Surface Dehydration and Priming

    Explains dehydrators, acid-based primers, and acid-free primers and their roles. Correct priming chemistry maximizes adhesion without compromising nail integrity.

Chapter 3See details

Acrylic Extension System

  • Lesson 1 • Zone Application and Apex Building

    Covers three-zone placement strategy and apex construction for structural strength. Correct apex placement prevents stress fractures and breakage under load.

  • Lesson 2 • Acrylic Chemistry and Product Selection

    Explains polymerization, monomer types, and polymer powder properties. Product knowledge enables correct ratio control and consistent bead consistency.

  • Lesson 3 • Bead Pickup and Consistency Control

    Trains correct brush loading, bead size, and wet-to-dry bead recognition. Consistent bead quality is the foundation of smooth, bubble-free acrylic application.

  • Lesson 4 • Shaping and Refining Acrylic Extensions

    Teaches filing sequence, shape refinement, and surface smoothing after cure. Precise filing reveals the final shape without thinning the stress area.

  • Lesson 5 • Acrylic Maintenance and Infills

    Explains regrowth assessment, product removal at the cuticle, and infill application. Regular infills maintain structural integrity and extend service life.

Chapter 4See details

Hard Gel Extension System

  • Lesson 1 • Sculpting with Hard Gel on Forms

    Teaches form fitting, gel sculpting, and free-edge extension without tips. Sculpting skills expand service offerings and eliminate tip-blending steps.

  • Lesson 2 • Hard Gel Chemistry and Curing Science

    Explains photoinitiators, oligomers, and lamp wavelength compatibility. Understanding cure science prevents under-cure, inhibition layers, and product failure.

  • Lesson 3 • Hard Gel Maintenance and Removal

    Covers infill technique, crack repair, and safe file-off removal. Hard gel cannot be soaked off, so correct removal prevents natural nail damage.

  • Lesson 4 • Builder Gel Application Over Tips

    Covers gel placement, self-leveling management, and flash-cure technique. Controlled application prevents flooding the cuticle and ensures even thickness.

  • Lesson 5 • Filing and Finishing Hard Gel

    Addresses gel-specific filing tools, surface refinement, and top coat application. Gel requires different filing pressure than acrylic to avoid heat spikes.

Chapter 5See details

Soft Gel and Gel-X Systems

  • Lesson 1 • Soft Gel Overlay Application

    Teaches applying soak-off builder gel over natural nails or tips for strength. Overlays add durability without significant length, ideal for natural nail clients.

  • Lesson 2 • Soak-Off Removal and Nail Care

    Covers acetone soak-off methods, foil wrapping, and post-removal nail treatment. Correct removal preserves natural nail integrity for repeat service cycles.

  • Lesson 3 • Customization and Nail Art Integration

    Introduces embedding foils, glitters, and pigments within soft gel layers. Encapsulation techniques add design value without compromising structural integrity.

  • Lesson 4 • Soft Gel Product Categories

    Distinguishes soak-off gels, builder-in-a-bottle, and gel-X systems by chemistry. Correct product identification prevents misapplication and removal errors.

  • Lesson 5 • Gel-X Application Technique

    Covers sizing, adhesive gel application, and tip placement for gel-X systems. Precise sizing and adhesive control determine extension longevity and comfort.

Chapter 6See details

Nail Shaping and Finishing Mastery

  • Lesson 1 • Nail Art Fundamentals on Extensions

    Introduces stamping, freehand line art, and simple chrome effects on extensions. Basic nail art skills increase service menu value and client retention.

  • Lesson 2 • Symmetry and Length Consistency

    Teaches measurement techniques and visual checks for uniform length across all ten nails. Symmetry errors are the most visible quality flaw in finished extensions.

  • Lesson 3 • Surface Refinement and Buffing

    Covers progressive buffing grits, shine development, and surface defect removal. A flawless surface is essential before applying any color or top coat product.

  • Lesson 4 • Gel Polish Application Over Extensions

    Teaches thin-coat gel polish application, capping, and curing over extension products. Proper gel polish technique prevents chipping, shrinkage, and color fading.

  • Lesson 5 • Nail Shape Profiles and Client Selection

    Covers square, round, oval, almond, coffin, and stiletto shapes and their suitability. Shape selection aligned to finger anatomy and lifestyle improves client satisfaction.

Chapter 7See details

Advanced Extension Techniques

  • Lesson 1 • Corrective Extension Work

    Addresses repairing broken extensions, correcting lifting, and rebuilding damaged nails. Corrective skills retain clients and demonstrate advanced technical problem-solving.

  • Lesson 2 • Extreme Length Structural Engineering

    Teaches reinforcement strategies, apex placement, and product layering for long extensions. Structural engineering prevents breakage in extensions beyond standard length.

  • Lesson 3 • Dual-System Extension Combinations

    Explores combining acrylic structure with gel finish or gel-X with builder overlay. Dual systems leverage the strengths of each product for superior results.

  • Lesson 4 • Sculpting on Nail Forms

    Covers form selection, fitting, and full sculpted extension without tips. Sculpting eliminates tip-blending steps and allows unlimited length and shape control.

  • Lesson 5 • Competition and Editorial Nail Techniques

    Introduces precision standards, extreme shapes, and 3D art used in competition work. Competition training elevates technical discipline and creative range.

Chapter 8See details

Professional Practice and Client Management

  • Lesson 1 • Portfolio Building and Social Media

    Introduces nail photography, editing basics, and platform strategy for professional visibility. A strong portfolio attracts new clients and demonstrates technical range.

  • Lesson 2 • Pricing, Menus, and Service Packages

    Covers cost-of-goods calculation, competitive pricing, and service menu design. Accurate pricing ensures profitability while remaining competitive in the local market.

  • Lesson 3 • Client Communication and Retention

    Teaches active listening, managing complaints, and building long-term client relationships. Strong communication skills drive repeat bookings and referral growth.

  • Lesson 4 • Service Timing and Workflow Efficiency

    Covers step sequencing, time benchmarks, and workflow optimization for full extension services. Efficient workflow increases daily client capacity without sacrificing quality.

  • Lesson 5 • Continuing Education and Career Pathways

    Maps advanced certifications, educator roles, and salon ownership as career options. Ongoing education maintains technical currency and expands professional opportunities.

Certification

Your valid completion certificate

This course is for you:

  • Complete beginner: wants a structured path into the nail industry from zero.

  • Esthetician or cosmetologist: ready to add extension services to an existing menu.

  • Stay-at-home parent: seeking a flexible, skill-based career with real earning potential.

  • Nail enthusiast: passionate about nail art and wants to go fully professional.

  • Career changer: leaving an unrelated field and investing in a hands-on trade.

  • Salon assistant: building technical credentials to move into a full-service role.

What our students say

Your classes are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of interest without needing to switch platforms... I thank you for everything you do, I've already recommended you to other people...
Giulio Carlo
Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can change chapters and skip content I don't need.
Mariana Ferres
Mariana FerresPhotography Student
I like the content and the presentation style and video transcription, which speeds up the process!
Luciana Alvarenga
Luciana AlvarengaNail Design Student
The platform is fast, simple to use. The diversity of content and complementary videos really help with learning.
André Felipe
André FelipePrompt Engineering Student

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