Lash Extension Refill with Blepharitis and Latanoprost
A 35-year-old regular client requests a refill of her classic eyelash extensions before a job interview in four days. She has had extensions for eight months with no previous reaction. Today she reports itchy, gritty eyes for five days, and on inspection both upper lids are mildly erythematous with crusting at the lash line; the conjunctiva is mildly injected. She uses latanoprost eye drops nightly for glaucoma and has not changed brands. She wears daily disposable contact lenses and removed them this morning. She has no fever, no vision change, and no corneal opacity visible. The salon uses cyanoacrylate adhesive and has a 24-hour patch-test rule for new clients; she was patch-tested eight months ago. She is adamant the refill is essential and asks the therapist to 'just avoid the crusty bits'.
1. Should the therapist proceed with the lash refill? Assess blepharitis and latanoprost.
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No. The itchy, gritty eyes, lid erythema, lash-line crusting and mild conjunctival injection suggest active blepharitis, possibly with low-grade infection. Lash extension adhesive fumes, occlusion and manipulation can aggravate lid inflammation, trap debris and increase the risk of conjunctivitis or corneal irritation. Latanoprost is not an absolute ban on lashes, but it can cause lash lengthening, periocular pigmentation and increased sensitivity, so the eye is already pharmacologically active. The therapist should defer the refill until the blepharitis has resolved and, if there is no improvement in 48-72 hours or vision changes, refer to an optometrist or GP. Do not remove existing lashes forcefully if the lid is inflamed.
2. What are the specific risks of cyanoacrylate adhesive and latanoprost in this client?
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Cyanoacrylate adhesive can cause allergic contact dermatitis, fume-related irritation and, if improperly applied, bond lashes to the lid or cause corneal abrasion. With active blepharitis the lid margin is already inflamed and the tear film unstable, so fume exposure is more likely to sting and the risk of secondary infection rises. Latanoprost can lengthen and darken lashes and increase iris pigmentation; it does not usually interact with adhesive, but it makes the ocular surface more sensitive and the lash cycle less predictable. The therapist should not rely on an eight-month-old patch test to clear active disease. A new patch test is not appropriate while the eye is inflamed.
3. What alternatives, referral, and documentation would you provide?
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Offer brow grooming, a gentle eye makeup consultation without adhesive, or a strip-lash trial only after the blepharitis settles; do not apply adhesive to inflamed lids. Advise warm lid compresses, dilute lid hygiene according to her optometrist's advice, and avoiding eye makeup and contact lenses until symptoms improve. Refer to an optometrist or GP if symptoms persist beyond 48-72 hours, worsen, or are accompanied by pain or vision change. Document the findings, latanoprost use, refusal of refill, referral advice, aftercare and rebooking criteria: at least 48 hours symptom-free and, if needed, optometrist clearance. Ask her to sign the record and explain that the interview deadline does not justify risking her eye health.