top of page

8 key takeaways from Lash Factor’s patch testing guide

Over at Lash Factor (like our friendsglo), we recognise how confusing the world of patch testing can be. That’s why we've recently put together our ultimate patch testing guide, consolidating all our findings into one comprehensive article for you.

However, in this blog post, we’ve outlined the 8 main takeaways from our guide so you can check that your patch testing policies, and knowledge, are up-to-date in just a few minutes.

The importance of patch tests.

You don’t need us to say it, but we will. Patch testing is a part of your duty of care to your clients. By not patch testing, you’re risking the safety of your client. ALWAYS follow the manufacturer’s patch testing instructions and your insurer’s guidance.

Allergies are not the same as sensitivities or intolerances

An allergy involves the immune system, whereas sensitivities and intolerances do not. However, the symptoms of each can sometimes look similar, which is why it’s important to treat any reaction as potentially serious (hence why any adverse reaction to a patch test means that treatment becomes a no-go for the client).

PPD is the main allergen to be aware of (but is not the only one that can cause adverse reactions)

Most of us are aware of PPD, the chemical found in many hair colouring and lash + brow tinting products. Although PPD is a common allergen, there are plenty of other chemicals found in PPD-free formulas that still have the potential to cause a reaction. That’s why it’s important to follow your insurer’s and the manufacturer’s advice when it comes to determining whether a treatment requires a patch test or not.

Who carries out the patch test could be just as important as how you patch test

Depending on your insurance policy, a patch test might only be valid if it’s carried out by a qualified professional. This means asking an apprentice or receptionist to see to patch test walk-ins might render your insurance invalid.

That’s why we recommend checking through your policy with a fine-toothed comb and asking your insurer plenty of questions. Oh, and postal patch testing kits? We say steer clear. Although they seem convenient, there’s no way to ensure that your client has applied them correctly, if at all!

Recording patch testing info is key for compliancy

Obviously good to glo know this, which is why we’re big advocates of their software which helps to streamline the patch testing process and consolidate all the paperwork you need.

Click here for more information about how it works.

  1. There are at least 5 different reasons that would prompt a re-patch test

These are:

  1. It’s time to re-patch test according to the manufacturer’s guidance (this is usually every 6 or 12 months)

  2. There’s been a change in your client’s medical history

  3. Your client becomes pregnant (only if it’s safe to keep performing that treatment during pregnancy)

  4. You introduce a new product

  5. There’s been a formulation change

In the unlikely event of an allergic reaction, it’s important to know how to respond

Fail to prepare, prepare to fail. Even when all precautions have been taken, a reaction can still happen. Therefore, it’s important to recognise the signs of an adverse reaction and know how to respond calmly. If this is an area you don’t feel confident in, why not undertake first aid training that covers allergic reactions?

Today, there are common allergen alternatives for your sensitive clients

A positive patch test does not have to rule out a treatment completely. Today, there are alternative products formulated without common allergens, as well as alternative treatments. For example, there are PPD-free formulas for tint-sensitive clients, or PMU could also be a viable alternative for brow longevity.

So, there you have it! 8 key takeaways from our patch testing post. And if you’ve got any further questions, why not check out the full guide here? In the meantime, we’re offering all good to glo customers 15% off their next order at Use code GTG15 at checkout (one-time use per customer, excludes Tina Davies and Perma Blend).


Michaela Salacinski

Brand Manager at Lash Factor, Michaela is passionate about creating in-depth guides around industry-relevant topics to spread awareness and share knowledge.


bottom of page