Understanding Cellular Toxicity and Inflammation in Eyelash Perm Ingredients

When it comes to lash lifts + brow laminations, safety is paramount. For professionals working with perming products, it's essential to know the effects that different ingredients can have on cellular health. This article breaks down key findings from a recent evaluation of the cytotoxicity (cell toxicity) and inflammation potential of various common ingredients used in eyelash perming solutions.

What is Cytotoxicity?

Cytotoxicity refers to the degree to which a substance can damage or kill cells. Understanding the cytotoxicity of ingredients is crucial because it helps us identify the safety and effectiveness of cosmetic formulations. In this evaluation, the focus was on HaCaT cells—human skin cells commonly used in scientific testing for their similarity to the skin found in human hair follicles and other parts of the body.

Cytotoxicity Results: The Safest Ingredients

The evaluation tested several common eyelash perm ingredients, measuring the percentage of viable (alive) cells after exposure to each substance. Here's a summary of the findings:

1. Pure Cysteamine Formula – With a viability of 87.34%, this ingredient had the lowest cytotoxicity, making it the safest option for eyelash perming.
2. Cysteine – Showing 26.36% viability, this ingredient presented higher cytotoxicity compared to Pure Cysteamine.
3. Thioglycolic Acid – At only 5.76% viability, this substance exhibited significant cytotoxicity, which may suggest it poses a higher risk to cell health.
4. Ethanolamine Thioglycolic Acid – With a viability of 11.98%, this ingredient demonstrated relatively higher cytotoxicity than Pure Cysteamine.
5. Cysteine-HCL – The viability stood at 48.96%, indicating moderate cytotoxicity.
6. Cysteamine-HCL – Similar to Cysteine-HCL, the viability was 35.67%.

Inflammation Induction: What You Need to Know

Inflammation is a natural response of the body to irritation, but excessive inflammation can lead to discomfort and damage. The ingredients were also tested for their ability to induce inflammation in the same HaCaT cells. This test measured NF-KB transcription factor activity, which is an indicator of inflammation.

• Pure Cysteamine was again the best performer, showing minimal inflammation induction across various concentrations.
• Cysteine and Thioglycolic Acid showed much stronger inflammatory responses, with Thioglycolic Acid causing the highest level of inflammation.

Choosing the Right Ingredients for Safe Beauty

For professionals offering eyelash perm treatments, understanding the cytotoxicity and inflammation potential of your products is critical. Products containing Pure Cysteamine formulas not only provide superior results but also offer the lowest cytotoxicity and inflammatory risks, making them ideal for clients concerned about the health of their lashes.

On the other hand, ingredients like Thioglycolic Acid and Cysteine should be used with caution, as their higher cytotoxicity and inflammatory responses may lead to discomfort or potential damage to delicate areas such as the eyes.

Final Thoughts

When choosing lash/brow perming solutions, the health of your client’s lashes, brows and skin should always be a priority. Opt for formulas like Pure Cysteamine, which demonstrate lower cytotoxicity and inflammation, ensuring that your clients enjoy beautiful results without compromising safety.