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Demodex Folliculorum vs. Demodex Brevis: The Hidden Reason Behind Eyelash Loss & Dry Eyes

Demodex Folliculorum vs. Demodex Brevis: The Hidden Reason Behind Eyelash Loss & Dry Eyes

You can’t see them, but your eyelashes and eyelids can feel them.

Demodex mites are microscopic organisms that naturally live on human skin. In small numbers, they’re usually harmless. But when they overpopulate the eyelids, they become a major root cause of eyelash loss, eyelid inflammation, and Meibomian Gland Dysfunction (MGD).

There are two different types of Demodex mites, and each causes very different problems for your eyes and lashes.

Let’s break it down.

 

Meet the Two Demodex Mites Living on Eyelids

1. Demodex folliculorum

Where they live:

  • Inside eyelash hair follicles

  • Wrapped tightly around the base of each eyelash

What they eat:

  • Dead skin cells

  • Keratin

  • Sebum (oil from skin and lash follicles)

What they cause:

  • Eyelash loss

  • Brittle, thinning lashes

  • Lash follicle inflammation

  • Demodex collarettes (cylindrical dandruff)

Demodex folliculorum congregate in clusters around the lash shaft, forming sticky, waxy debris called collarettes. These look like tight bracelets hugging the base of each eyelash.

Over time, these mites:

  • Weaken the lash follicle

  • Block healthy lash growth

  • Trigger inflammation

  • Cause lashes to shed prematurely

If you’re noticing unexplained lash loss, poor lash extension retention, or itchy lash lines, Demodex folliculorum is often the culprit.

 

2. Demodex brevis

Where they live:

  • Deep inside the meibomian oil glands

  • Burrowed into gland orifices at the eyelid margin

What they eat:

  • Meibomian gland oils

  • Lipids that normally protect the tear film

What they cause:

  • Meibomian Gland Dysfunction (MGD)

  • Evaporative dry eye

  • Inflammation of the eyelid margin

  • Thickened or blocked oil glands

Demodex brevis is sneakier and more damaging long-term. These mites burrow into the oil glands that are responsible for producing the lipid layer of your tears.

When those glands become clogged or inflamed:

  • Tears evaporate too quickly

  • Eyes feel dry, gritty, or burning

  • Contact lenses become uncomfortable

  • Chronic dry eye develops

This is why Demodex brevis is strongly linked to MGD and persistent dry eye symptoms.

 

What Demodex Mites Leave Behind (and Why It’s So Hard to Remove)

Demodex mites don’t just live on your eyelids, they leave behind and buried in debris.

Their waste is:

  • Sticky

  • Oily

  • Greasy

  • Waxy

  • Highly adhesive to lashes and skin

Because the eyelid margin is such a small, delicate area, regular face cleansers and makeup removers simply can’t reach where Demodex hides.

That’s why Demodex debris often builds up unnoticed, until symptoms appear.

 

Why You Must Target Both Types of Demodex

Most people only treat the lashes, but Demodex lives both in the follicles AND inside the oil glands.

To truly restore lash health and eye comfort, you must:

  • Remove collarettes from lash follicles (Demodex folliculorum)

  • Clean meibomian gland openings at the eyelid margin (Demodex brevis)

This requires precision tools + the right cleansing formula.

 


Set of 'we love eyes' skincare products including a dropper bottle, serum, and applicator on a white background.

Clean Demodex Mite Debris in Seconds, XO

Cleaning Demodex debris is tricky because the mites are invisible and the eyelid margin is incredibly small. That’s why we created an organized, professional-grade system designed specifically for this area. Shop here.

How the System Works

Step 1: Loosen Collarettes (Demodex folliculorum)
Use the Eyelid Margin Scrub Brush with Tea Tree Eyelid & Eyelash Cleansing Oil to gently loosen the tight, waxy collarettes wrapped around each eyelash.

Step 2: Clean Meibomian Gland Openings (Demodex brevis)
Use the same brush to scrub directly along the eyelid margin where Demodex brevis burrow into oil gland orifices—helping reduce inflammation and support healthy oil flow.

Step 3: Detail Work Between Lashes
Use the In Between Eyelash Cleansing Brush with cleansing oil. Insert the bristles at the base of the lash and pull upward from base to tip to physically remove collarettes.

✨ Pro tip: Always use a 10X lighted magnifying mirror for precise, effective cleansing, accuracy and safety.

Step 4: Wash It All Away
Finish with the probiotic Tea Tree Eyelid & Eyelash Foaming Cleanser to remove loosened debris and complete the double cleanse. Probiotic ingredients help maintain a balanced eyelid skin microbiome.

 

What’s Included

  • Tea Tree Eyelid & Eyelash Cleansing Oil (30mL)

  • Tea Tree Eyelid & Eyelash Foaming Cleanser (50mL)

  • Eyelid Margin Scrub Brush

  • In Between Eyelash Cleansing Brush

 

The Bottom Line

  • Demodex folliculorum causes eyelash loss by damaging lash follicles

  • Demodex brevis causes MGD by clogging oil glands

  • Both mites feed on oils and skin debris

  • Both must be addressed for truly healthy lashes and comfortable eyes

  • Find my Demodex Mites Debris Cleansing System here


 

Hi, I’m Dr. Tanya Gill, optometrist and founder of We Love Eyes. I started We Love Eyes in 2014 while trying to help one of my (stubborn) patients with contact lens discomfort. In 2016, I had 3 products. Fast forward to today — We Love Eyes has almost 30 SKUs. It’s been an amazing journey. Explore my life’s work at weloveeyes.com. Check out my content on DEMODEX and basically eavesdrop things I have discussed with my patients. I also have a ton of content at TIKTOK. See the profile page and see the playlist DEMODEX. xo

 

 

 

 

My Additional Demodex Content with links:

  1. Demodex Mites Debris Cleansing System
  2. This is How You Clean Demodex Mites Debris
  3. Understanding the Link Between Chalazion and Demodex Mites: Effective Eye Care Solutions
  4. How To Clean Demodex Eyelash Mites Debris
  5. WHAT IS AN EFFECTIVE EYE CARE ROUTINE FOR DEMODEX BLEPHARITIS?
  6. Demodex vs. Seborrheic BLEPHARITIS: Visual Examples and Treatment Tips
  7. Your eyes. Your makeup. A case of demodex mites.
  8. How Ocular Rosacea and Demodex Mites Are Connected: Key Insights for Optimal Eye Health
  9. Demodex Mites Collarettes: What They Are and How to Identify & Treat Eye Irritation
  10. Can You Really Get Demodex Mites from Makeup Counters? Expert Eye Doctor Advice & Tips
  11. The 2 Types of Demodex: Folliculorum vs. Brevis 

 

 

  • Effective eye care routine for Demodex blepharitis

  • Demodex blepharitis treatment

  • Demodex mites on eyelashes

  • Demodex eyelid hygiene routine

  • Demodex blepharitis eye care routine

  • Itchy eyelids Demodex

  • Collarettes on eyelashes

  • Red, irritated eyelids

  • Eyelid margin inflammation

  • Demodex eyelid cleansing

  • Daily eyelid hygiene for blepharitis

  • Optometrist recommended eyelid cleanser

  • Tea tree oil eyelid cleanser Demodex

  • Demodex mites debris on lashes

  • We Love Eyes Demodex Mites Cleansing System

  • We Love Eyes eyelid cleanser

  • Demodex mites cleansing system

  • XDEMVY eye drops

  • XDEMVY Demodex treatment

  • FDA approved Demodex eye drops

  • Lotilaner ophthalmic solution

  • What is the best eye care routine for Demodex blepharitis

  • How to get rid of Demodex mites on eyelashes

  • Why do I have collarettes on my eyelashes

  • How to treat itchy eyelids caused by Demodex

  • Can Demodex cause blepharitis

  • Daily routine for Demodex eyelids

  • Best eyelid cleanser for Demodex mites

  • Optometrist recommended Demodex treatment

  • Doctor-approved eyelid hygiene

  • Eye doctor advice for blepharitis

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