Why Not To Use Henna With Brow Bomber
Why can’t we use Henna in the Brow Bomber treatment?
LET’S START FROM THE ACTIVE INGREDIENT OF THE PERMANENT:
AMMONIUM THIOGLYCOLIC.
Ammonium Thioglycolic is a chemical used to straighten or curl hair, eyelashes and eyebrows. Compared to other chemicals of this kind, Ammonium Thioglycolic is the mildest because it causes less damage to the hair shaft.
In chemistry the thiol group (-SH) makes this substance a “reducing agent”, which creates the splitting of disulphide bonds. What does the Ammonium Thioglycolic do? It swells the hair, penetrates and it breaks disulphide bonds inside the keratin filaments. This chemical is much less damaging than other ingredients to eyelashes and eyebrows hairs.
The hair natural pH ranges between 4,5 - 5,5 and Ammonium Thioglycolic’s pH varies from 9 to 10: compared to other substances is much less alkaline, so it causes less stress to the hair. For example Ammonium Hydroxide, used in some permanents, has a higher pH from 14 up to 16 and for this reason it seriously damages the hair.
THE DYES
Now I will refer to the classic permanent process and dyeing used by hairdressers, from which we always take inspiration.
From a chemical point of view, once the Ammonium Thioglycolic is used (it creates the splitting of disulphide bonds), the hair will suffer a very strong stress. The most common substance used as a "neutralizer" of the permanent is Hydrogen Peroxide, the same substance used in permanent colours too. So, components of the dye may react with components of the perm product.
You may get an unpredictable result because Hydrogen Peroxide can alter the colour. In addition, the dye can reduce to zero the result of the permanent: under the impact of some substances (dyes), curly hair can become smooth again and vice versa.
Ammonium Thioglycolic VS permanent colouring and Henna colouring.
From a chemical point of view it is not recommended to use dyes or Henna colouring together with perm!
WE NOW GET TO PERMANENT AND COLOURING APPLIED TO OUR FIELD: EYELASHES AND EYEBROWS.
I remind you that eyelashes and eyebrows products require a more gentle percentage of the ingredients mentioned above. In the case of Hydrogen Peroxide the percentage for eyelashes and eyebrows is only 1.5% as in our “Developer” (unlike the concentration suitable for hair, which can reach 12%).
InLei® Tints have been specifically created for our treatments InLei® Lash Filler and InLei® Brow Bomber. They have been tested internally by us and by external laboratories, to ensure the maximum safety in use.
Remember: "InLei® is the first and, at the moment, the only tint specifically designed for lamination treatment!”. We already claimed this in 2017 through clinical tests (it is part of the protocol of Lash Filler treatment). Moreover, InLei® production is controlled as it is located in Italy.
HENNA AND PERM.
Based on the data above, we have no similar certainties as regards to Henna, neither from the point of view of analysis or testing nor from the point of view of production (as there is no European Henna production).
In the case of Henna colouring, is not recommended during the perm process for several reasons.
First of all, Hydrogen Peroxide (which is included in the second substance of the perm) can alter Henna. This has a harmful effect on hair follicles and could also cause growth to stop.
As we have already said, Ammonium Thioglycolic swells the hair structure too much and makes it fragile. Inserting the large Henna molecule in this fragile structure, would lead to a harmful effect on the health of the hair shaft or will cause their early fall.
In addition, Henna binds to the cuticle, leaves it open and (since it activates with water) it absorbs most of the liquids of the hair, drying it in depth.
The process of Henna colouring is good for a healthy hair, but it completely damages a hair treated with perm.
Henna and perm treatments have a great influence on the structure of the hair, so they must be performed with the right distance of time (at least 20 days). Otherwise, the hair would become too fragile and would break immediately or within a few days with the slightest mechanical movement.
This is an opinion of scientists based on scientific studies on the safety of Lawsonia (Henna) on hair.
CONCLUSIONS:
If we do InLei® Lash Filler or InLei® Brow Bomber with InLei® Tints, we are sure not to damage the hair for following reasons:
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- Our tints are tested and they have been specifically designed for this process.
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- They contain Argan oil that restores the hair structure.
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- Filler 3 contains molecules able to reconstruct the internal structure and it facilitates the proliferation of new keratin molecules.
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- Brow Bomber butter contains oils and extracts that nourish the hair, protect it and restores its structure.
If we do InLei® Lash Filler or InLei® Brow Bomber with Henna we can seriously damage the hair and cause growth to stop due to the following reasons:
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- There is no targeted study on this topic.
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- The scientists’ opinion confirms that Hydrogen Peroxide alters Henna, so these two substances must not come into contact the one with the other.
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- Filler 3 or Brow Bomber butter can no longer penetrate into the hair to nourish it, as Henna large molecule clogs the passage.
I hope that this article will be useful to you.
I recommend you to read it two or three times to fully understand it.


Classic Lash Extension Course
If you have no prior eyelash extension training and are ready to delve into the lash world for the first time, or have a little bit of experience with classic lashes but need a better understanding of the lash extension fundamentals… you have come to the right place!
Van Isle Beauty is an accredited lash extension academy dedicated to helping you kick-start your lash career. As salon-owners ourselves and with over 15 years experience in the lash industry, you can train alongside industry experts, have the opportunity to try your hand at practical application on models and be welcomed into a blooming Lash community.

Course Information
Our Classic EyeLash Extension Course is a two day in-person training event with an optional third day to cover Hybrid Eyelash Extension training. Each highly-qualified & experienced trainer hosts small groups of up to four to give as much one-on-one, personal support as possible. You can learn alongside the best in the industry, in a group environment where there is plenty of time for questions and to learn the best-kept industry secrets.
The course includes a comprehensive Classic Lash Extension Kit (RRP: $300+) a professional-grade lash extension kit enabling you to perform up to 30 top-notch lash treatments, making it an invaluable addition to your training and practice.
The in-person training session will be hosted at Van Isle Beauty, in the heart of Nanaimo, B.C.
Q&A's About Our Classic Lash Course
Why Educate with Van Isle Beauty Co.?
Why Educate with Van Isle Beauty Co.?
Our academy is led by highly skilled and experienced trainers who are passionate about sharing their knowledge and expertise. They will guide you through the entire process, from the basics of eyelash extensions to advanced techniques, ensuring that you gain a deep understanding of the artistry and precision required.
What sets our academy apart is our commitment to providing hands-on training. We believe that practical experience is crucial in mastering the art of eyelash extensions. You will have the opportunity to practice on live models under the guidance of our trainers, allowing you to refine your skills and build confidence in your abilities.
In addition to technical skills, our academy also places great emphasis on client communication and professionalism. We understand the importance of creating a comfortable and enjoyable experience for clients, and we will teach you how to effectively communicate with them, address their needs, and provide exceptional customer service.
Upon completion of our academy, you will receive a certification that is recognized and respected in the industry. This certification not only demonstrates your skills and knowledge but also opens up opportunities for career advancement and growth.
Topics We Will Cover
Topics We Will Cover
CLASSIC LASH COURSE
You’ll gain access to the online portion of the course two weeks before your class date, giving you plenty of time to dive in and prepare. Inside, you’ll find a comprehensive mix of theory, videos, and slides designed to help you fully understand the material. Please note that the online section must be completed 100% prior to attending the in-person class to ensure you’re ready to get the most out of your training.plete this section 100% before class begins.
Pre-Application
- Product Knowledge
- Health & Safety
- Natural Lash Growth Cycle
- Allergies & Irritants
- Anatomy of the Eye
- Workspace Preparation
- Adhesive Bonds
- Client Consultation
- Body Positioning
Application
- Diameters of Extensions
- Extension Curl Types
- Extension Style & Design
- Weight of Extensions
- Styling for Eye Shapes
- Creating Symmetry
- Securing Bottom Lashes
- Irritation Minimization
- Isolation Techniques
- Proper Adhesive Usage
Post-Application
- Completion Steps
- Retention Troubleshooting
- Fills / When to take lashes off
- Single Extension Removal
- Client Aftercare
- Pricing Your Lash Services
Business
- Career Options for Lash Technicians
- Pricing your lash services
- Marketing your Lash Business
- Making Money with Retail
- Yearly Profit
- Insurance & Business Licence
What Is In My Lash Kit
What Is In My Lash Kit
Your professional kit will be provided to you on the day of the course. Each kit is thoughtfully curated with all the high-quality products and tools you’ll need to confidently perform treatments both during training and once you begin offering the service to clients.
- 5 lash trays
- Lash Pallet
- 3 Pro-lash Line Tweezers
- 1 Lash Adhesive
- Jade Stone for Adhesive
- Eye Pads
- 3m Surgical Tape
- Liquid Primer
- Lash Cleanser
- Micro-brushes
- Lint-free Lash Wands
- Mascara Wands
- Lash Remover
Course Curriculum
Course Curriculum
The online portion of the course must be completed before the class date to ensure you are fully prepared for hands-on training.
Two-Day Classic Lash Extensions Course
DAY 1
- 9:00 AM – Class Begins: Introduction & Theory
- 11:00 AM – Live Model Demonstration
- 12:30 – 1:15 PM – Lunch Break
- 1:15 – 3:15 PM – Practice on Mannequin
- 3:15 PM – Lash Removal, Proper Eye Pad & Tape Placement
DAY 2
- 9:00 – 12:00 PM – First Live Model Application
- 12:00 – 1:00 PM – Lunch Break
- 1:00 – 4:00 PM – Second Live Model Application
- 4:00 – 4:15 PM – Clean-Up & Q&A Session
DAY 3 (Optional Hybrid Day)
- 9:00 – 12:00 PM – First Hybrid Model Application
- 12:00 – 1:00 PM – Lunch Break
- 1:00 – 4:00 PM – Second Hybrid Model Application
After-Class Certification Requirements
Your learning doesn’t stop after the two-day course! To become fully certified, you’ll need to complete 6–8 additional model sets, including full sets and fills, on your own time. You’ll submit before-and-after photos of each model for your trainer to review and provide personalized feedback on.
Lash artistry is a craft that takes time, practice, and patience to master. These additional models help you refine your skills, improve your technique, and gain the confidence needed to deliver professional-quality results.
Once your trainer has reviewed and approved your work, you’ll receive your official certification, confirming that you’re ready to confidently take paying clients — whether independently or in a salon setting — and start your career as a certified lash artist.