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Finally understand why your glue does what it does

LashSimple teaches you the real science behind cyanoacrylate adhesive — in plain English, with zero chemistry background required — so you can stop guessing, stop blaming the bottle, and start making confident decisions at every single appointment.

29 lessonsAI-adaptiveCancel anytimeLearn anywhere
LashSimple

The moment you understand why your adhesive does what it does, you stop chasing fixes and start making decisions — and that changes everything.Jancina Dyer

What you'll learn

What you'll be able to do

  • Explain how cyanoacrylate polymerization works and why humidity, temperature, and airflow each control your cure — no chemistry degree required.
  • Diagnose the root cause of any retention failure — stringy glue, sudden drop-off, poor bond — using the LashSimple Observe-Understand-Simplify-Apply-Evaluate method.
  • Select the right adhesive viscosity and working time for your personal technique and environment instead of chasing marketing claims about drying speed.
  • Walk through all five phases of adhesive cure and translate that knowledge into smarter aftercare instructions you can actually explain to clients.
  • Troubleshoot the ten most common adhesive mistakes — identifying the symptom, the true cause, and the practical fix — before they cost you clients.
  • Read and interpret an SDS, TDS, or ISO test summary so you can evaluate any adhesive on evidence, not brand loyalty or social-media hype.

How it works

A school that adapts to you

This isn't a set of static videos. Every lesson is generated live and tuned to where you actually are.

We learn your level

A quick placement check tailors your starting point so you're never bored or lost.

Lessons adapt as you go

Each lesson is written for your pace and your goal, adjusting as your skills grow.

Your AI coach keeps you moving

Checkpoints, feedback, and gentle nudges turn progress into a real result.

The curriculum

What's inside your school

6 modules · 29 lessons

1

How Lash Adhesive Actually Works

Builds the foundational chemistry knowledge every lash artist needs — explained in plain English with everyday analogies, zero jargon required.

  • 1.1What Is Cyanoacrylate? (And Why Should You Care)Included
  • 1.2Polymerization in Plain EnglishIncluded
  • 1.3The Moisture Trigger: Why Humidity Starts EverythingIncluded
  • 1.4How Temperature and Airflow Shape Your CureIncluded
  • 1.5Chemical Bond vs. Mechanical Bond: What's Actually Holding That Lash OnIncluded
2

Know Your Bottle: Adhesive Properties and Handling

Covers every physical property and handling habit that determines whether the adhesive in your hand is working for you or against you.

  • 2.1Viscosity: The Peanut-Butter-to-Water SpectrumIncluded
  • 2.2Working Time vs. Cure Time: Not the Same ThingIncluded
  • 2.3Drop Age, Freshness, and the Clock You Didn't Know Was RunningIncluded
  • 2.4Bottle Storage, Shelf Life, and Opening ProceduresIncluded
  • 2.5Pigments, Elastomers, and What Else Is in the FormulaIncluded
3

The Five Phases of Cure

Takes artists inside the full cure timeline — from first contact to complete bond — so they can make smarter placement, aftercare, and aftercare-instruction decisions.

  • 3.1Phase 1 — Initiation: The Moment Moisture HitsIncluded
  • 3.2Phase 2 — Propagation: The Chain Reaction BuildsIncluded
  • 3.3Phase 3 — Working Window: Your Time to PlaceIncluded
  • 3.4Phase 4 — Skin Cure: Surface Dry vs. Full CureIncluded
  • 3.5Phase 5 — Full Cure and Long-Term Bond IntegrityIncluded
4

The LashSimple Method: Observe, Understand, Simplify, Apply, Evaluate

Teaches a repeatable five-step decision-making framework so artists can diagnose and solve any adhesive problem systematically instead of guessing.

  • 4.1Introducing the LashSimple MethodIncluded
  • 4.2Observe: Reading Your Environment Before You Open a BottleIncluded
  • 4.3Understand and Simplify: Turning Data Into a DecisionIncluded
  • 4.4Apply and Evaluate: Testing, Adjusting, and Closing the LoopIncluded
5

The Ten Mistakes: Diagnose, Understand, Fix

Walks through the ten most common adhesive mistakes — each as a full problem-cause-symptom-solution lesson — so artists recognize and resolve issues before losing clients.

  • 5.1Mistakes 1–2: Chasing Fast Glue and Ignoring HumidityIncluded
  • 5.2Mistakes 3–4: Wrong Viscosity for Your Technique and Over-ApplicationIncluded
  • 5.3Mistakes 5–6: Contaminated Bottles and Improper StorageIncluded
  • 5.4Mistakes 7–8: Skipping Primer and Misunderstanding AftercareIncluded
  • 5.5Mistakes 9–10: Blaming the Adhesive First and Never Evaluating ResultsIncluded
6

Reading the Evidence: SDS, TDS, ISO, and Regulation Basics

Gives artists the practical literacy to evaluate any adhesive on real documentation — safety data sheets, test reports, and cosmetic regulations — rather than brand claims.

  • 6.1How to Read a Safety Data Sheet (SDS) Without a Chemistry DegreeIncluded
  • 6.2Technical Data Sheets and ISO Test Summaries: What the Numbers MeanIncluded
  • 6.3Adhesive Families: Ethyl, Butyl, Alkoxy, and Elastomer-ModifiedIncluded
  • 6.4MoCRA, Health Canada, and EU Cosmetic Regulation: What You Need to KnowIncluded
  • 6.5Evaluating Any Adhesive on Evidence, Not HypeIncluded

Who it's for

Is this you?

The Struggling Retainer

Her sets look great on day one but clients keep coming back with fallout — and she's tired of blaming the brand instead of finding the real answer.

The New Lash Artist

She finished her certification training but was never taught the 'why' behind adhesive — and she wants a solid foundation before bad habits form.

The Product Switcher

She's cycled through more adhesive brands than she can count and is finally ready to stop chasing marketing claims and understand what she's actually buying.

The Seasoned Pro Leveling Up

Years of experience, great clientele, but she knows there are gaps in her technical knowledge — and she wants to fill them before they cost her.

The Safety-Conscious Artist

She worries about client sensitivities and wants to actually understand SDS documents, regulatory requirements, and what's in her adhesive formula.

The Future Lash Educator

She's building toward teaching lash extension courses herself and knows she needs to understand adhesive science deeply before she can explain it to others.

Questions

Frequently asked

Your teacher

A note from your teacher

JD

Jancina Dyer

Hey — I see you.

You're good at what you do. Your clients love you, your sets look beautiful, and you show up prepared. But every time your retention goes sideways, there's this quiet voice in the back of your head that says, I don't actually know why this is happening. So you switch adhesives. You ask around. You buy the faster one, or the slower one, or the one that lash artist in another country swears by. And sometimes it helps — but you're never quite sure why it helped, which means you can't reliably repeat it.

That feeling used to drive me absolutely crazy. Because the answer isn't a better bottle. The answer is understanding what's happening inside the bottle — and right now, that knowledge just isn't being taught in most lash training. You learn application technique. You learn isolation and mapping and styling. But nobody sits you down and explains polymerization, or the five stages your adhesive moves through before it hits full cure, or why the exact same glue behaves completely differently on a humid Tuesday versus a dry Friday. That's not your fault. It's a gap in the industry.

That's why I built LashSimple. I wanted to create the resource I wish I'd had — one that treats you like the intelligent professional you are, without drowning you in jargon or making you feel dumb for not already knowing this stuff. We use plain language on purpose. We use analogies — peanut butter, chain reactions, things you already understand — because the science genuinely is that approachable once someone translates it properly. Chemistry isn't scary. It's just been explained badly.

Here's what I want for you: I want you to walk into your treatment room next week and feel completely in command of your materials. I want you to look at a drop of adhesive and actually understand what it's doing and why. I want you to be the lash artist who can pick up any Safety Data Sheet, read it, and know exactly what you're looking at — not because you memorized a list, but because you understand the principles underneath it.

You already have the hands and the eye. LashSimple gives you the knowledge to back it up. Come learn with me — I promise it's going to be so much simpler than you think.

Jancina Dyer

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  • 6 modules, 29 lessons
  • AI-adaptive lessons tuned to your level
  • Quizzes & checkpoints to lock in progress
  • Your own AI learning coach
  • Learn on any device, at your pace
  • Full access for as long as you're subscribed