Ever wondered what’s really triggering the cure in your LED UV lash adhesive?

In this episode of Lash Science, we’re unpacking the most commonly used photo-initiators in the industry: TPO, TPO-L, TMO, BAPO, and CQ.

We explain what they are, how they work, and our opinions on each—especially when it comes to eye safety, sensitivity, and yellowing.

Whether you're a chemistry nerd or just want to know what’s in your glue, this one's for you.

List of Photo Initiators mentioned and their info:

TPO: Ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate

CAS #: 84434-11-7

TPO-L: Ethyl (2,4,6-trimethylbenzoyl)oxyphenylphosphinate

CAS #: 75980-60-8

TMO: Methylene bis(1,4-cyclohexanediyl)(bis(2-(4-methylphenyl)-2-propyl)phosphine oxide)

CAS #: 145052-34-2    (Note: TMO is less commonly listed by this name and may be referred to as a specialty phosphine oxide initiator. It’s sometimes proprietary.)

BAPO: Bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide

CAS #: 162881-26-7

CQ (Camphorquinone): 1,7,7-Trimethylbicyclo[2.2.1]heptan-2,3-dione

CAS #: 10373-78-1

SSPI: Diphenyl(4-sodium phenylthio)phenyl sulfonium hexafluorophosphate

CAS #: 72135-85-6

In this episode, we’re breaking down the real science behind curing lights. With the rise of “white LED” lash systems, blue light exposure is becoming more common in lash rooms — but is it safe?

We dive into the risks associated with blue light, how it affects the eyes and skin, and why UVA-1 (395–400 nm) is the safer, more targeted choice for lash curing.

Tune in to get the facts and make confident, science-backed choices behind the lash bed.

In this episode, we address the recent misinformation shared at Lash Boss Summit and set the record straight with the actual word-for-word results from Opal System's safety testing.

We also issue a firm reminder to lash entrepreneurs about the real-world consequences of sharing false claims, stealing content, and misusing logos or photos. Copyright is real—and so are lawsuits.

Let’s raise the bar with facts, kindness, and integrity.

In this episode of Lash Science, we’re getting real about the criticism that comes with being early adopters of light curing.

From tough questions to outright hate, we share how we've handled negativity over the years—and how you can respond with confidence, professionalism, and facts.

Whether you're new to LED UV lashing or a seasoned educator, this episode will help you stand tall, stay informed, and not let the haters dim your light.

Struggling with lash retention while using an LED UV lash system?

In this episode, we break down the exact steps you need to take to maximize retention with light-cured adhesive. From proper lash prep and when to use (or skip) primer, to understanding adhesive ingredients, application techniques, and curing timing — we’re covering it all.

Whether you're brand new to light curing or want to refine your technique, this episode is packed with practical, science-backed tips you can start using right away.

💡 Don’t let poor retention hold your sets back — tune in now and take your LED UV lash game to the next level!

In this episode, we’re breaking down what radiometric testing is and why it matters when choosing a lash lamp. We explain the different Risk Group classifications — Exempt, 1, 2, and 3 — and what they mean for your safety.

We also talk about the difference between accredited and non-accredited labs, first-party vs. third-party testing, and why the OPAL system from Lash Apothecary being classified as Exempt is a big deal.

Get the facts, ditch the fear-mongering, and learn how to spot a truly safe LED UV lash system.

How do you know when it’s time to raise your lash prices?

In this episode, we’re talking specifically about light-cured lash services and how to recognize when a price increase makes sense.

We cover what makes LED UV lashing a premium experience, how to navigate pricing changes confidently, and tips for communicating with clients. If you’ve been upgrading your skills and tools, it might be time your prices reflect that.

In this episode of Lash Science, we dive into the safety and effectiveness of the new LED UV headlamps and the 'white LED' systems hitting the market.

We break down the science behind these products, discuss potential safety concerns, and share our expert opinions on whether these devices truly live up to their hype.

Tune in for an eye-opening discussion on some the latest LED UV lash technology!

Is LED UV lashing the smarter choice for beginners? In this episode of Lash Science, we dive into the debate of traditional vs. LED UV adhesives—but let’s be real, we know where we stand.

We break down why traditional adhesives come with unnecessary struggles for new lash artists and how LED UV can actually make learning easier with better control, retention, and consistency.

If you’re still on the fence about whether beginners should start with LED UV, this episode just might change your mind!

We’re spilling the tea on our biggest lash industry icks—no filter, no holding back! From questionable techniques to industry drama, we’re diving into the things that make us cringe. If you’re ready for some spicy takes, hit play and let’s talk about it! 🔥💀 #SorryNotSorry