Blepharitis is inflammation of the eyelid margin. It's extremely common, it's rarely dangerous, and it is almost never cured — which is the single most useful thing to understand before you spend money on it.
People come to us frustrated because a treatment "stopped working." Usually it worked exactly as intended, they stopped using it because their lids felt better, and the condition returned within a few weeks. That's the nature of it. Blepharitis is managed the way you'd manage gum disease: a routine you keep permanently, adjusted in intensity depending on how things are going.
Which type do you have?
The treatment differs, so this distinction matters more than most people realise.
Anterior blepharitis affects the front of the lid, around the lashes. You'll see crusting or flakes at the lash bases, often worse on waking, sometimes with lashes that fall out or grow in odd directions. It's usually staphylococcal or seborrhoeic — frequently in people who also have dandruff or seborrhoeic dermatitis.
Posterior blepharitis affects the meibomian glands behind the lashes. The lid margin looks thickened or red, the gland openings look capped, and the dominant symptom is dryness, grittiness and watering rather than crusting. This overlaps heavily with meibomian gland dysfunction.
Demodex blepharitis is worth separating out. Demodex are microscopic mites that live in hair follicles — most adults carry some, and the number rises with age. In some people they overpopulate the lash follicles and drive persistent inflammation. The giveaway is cylindrical dandruff: a clear collar or sleeve wrapped around the base of individual lashes, rather than loose flakes. Itchy lid margins, particularly first thing in the morning, are typical.
Plenty of people have more than one type at once.
The routine
Anterior and general blepharitis
Clean the lid margin daily. Not the eyelid skin — the margin, right at the lash line. A foam or wipe designed for the job, worked along the lash base with a closed eye, then rinsed or left as directed.
- Elin Eyes Lid & Lash Cleansing Foam for daily use — gentle enough to keep up long term, which matters more than potency for a condition you're managing for years.
- Elin Eyes Nourishing Lid & Lash Cleansing Oil suits drier, flakier lids that a foam leaves feeling tight.
- Systane Sterile Lid Wipes if you want something single-use and portable — practical for travel or for people who won't stand at the basin.
Add hypochlorous acid if the lids are inflamed. Hypochlorous acid is what your own neutrophils produce; as a lid spray it reduces the bacterial load on the margin without scrubbing an already irritated surface. It's a spray-on, leave-on product — no rinsing, no rubbing.
Either can be used alongside a cleanser: spray after cleaning, or on its own on days when the lids are too sore to touch.
If it's Demodex
Tea tree oil — specifically its active component, terpinen-4-ol — is the standard approach. Ordinary lid cleansers won't shift them.
The critical detail: Demodex have a life cycle of roughly two to three weeks, and treatment kills adults far more reliably than eggs. Treat for six weeks minimum, through at least two full cycles, before deciding whether it worked. Almost everyone who reports that tea tree lid products "did nothing" stopped at two weeks — right as the next generation hatched.
Neat tea tree oil does not belong anywhere near an eye. Use a product formulated at an ocular-safe concentration.
If the lid skin itself is dry and flaking
Optimel Manuka Honey Eyelid Cream is designed for the lid skin rather than the margin, and is useful where eczema-like dryness sits alongside the blepharitis.
The full range is in Lid Hygiene & Blepharitis NZ and OCuSOFT Lid Hygiene NZ. If your lids are inflamed and your eyes are dry with it, the Dry Eye Starter Kit for Irritated Lids puts the lid spray and drops together.
Warm compresses: only for posterior blepharitis
If your blepharitis is the posterior/meibomian type, heat is central — 8–10 minutes of genuinely sustained warmth, then massage. A facecloth from the hot tap cools too fast to do anything useful.
If it's purely anterior crusting, heat is optional. Cleaning is the part that matters.
Honest expectations
It will come back if you stop. Plan on a daily routine indefinitely, stepped up during flares. Most people settle into a maintenance rhythm of once daily.
It takes weeks, not days. Expect a noticeable difference in two to three weeks — with the exception of Demodex treatment, which needs the full six weeks to work through the mite life cycle. If three weeks of consistent lid care changes nothing, book an assessment rather than trying a fourth product.
It can cause dry eye, and dry eye can worsen it. Many people need both a lid routine and a lubricating drop — see which dry eye drop suits which eye.
Makeup and lash treatments matter. Eyeliner on the waterline blocks gland openings directly. Lash extensions and their adhesives are a recognised aggravator. We're not going to tell you to give either up, but if your lids flare and nothing else has changed, that's the first place to look.
When to be seen rather than self-treat
Get an appointment if there's pain rather than irritation, light sensitivity, blurred vision that doesn't clear on blinking, a lid lump persisting beyond two weeks, lashes that are falling out in one localised patch, or a lid margin that looks asymmetric — one lid clearly worse than the other in a way that isn't settling. Persistent one-sided lid changes in particular deserve an examination rather than another cleanser.
Under magnification we can see cylindrical dandruff, express a gland to judge oil quality, and check whether the cornea has been affected — none of which you can assess in a bathroom mirror.
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Written by Jacqueline Rowe — BSc Chemistry, BOptom. Partner Optometrist, Rose Optometry; New Zealand Eye Research Centre.
General information only — not a substitute for an eye examination.