Client Consultation, Contraindications, Allergies, and Patch Testing
A structured consultation
Use a written intake: medical history, medications, allergies (especially cyanoacrylate and latex), prior lash services, eye conditions, contact lens use, occupation and hobbies, plus informed consent. Ask open questions and document answers - the record is your defense if a reaction is alleged later.
Absolute versus relative contraindications
Absolute (do not proceed, refer): active eye infection such as conjunctivitis, blepharitis, or a stye; an active allergic reaction or undiagnosed irritation; recent eye surgery or LASIK without clearance; unwillingness to follow aftercare. Relative (proceed only with caution or written medical clearance): pregnancy or hormonal shifts, chemotherapy, thyroid conditions, chronic dry eye, trichotillomania, very oily lids, use of lash growth serums, and isotretinoin, which makes skin fragile and slow to heal. Contact lens wearers must remove lenses before the service. Latex-sensitive clients need nitrile gloves.
Patch testing
Apply a small amount of adhesive behind the ear or on the inner elbow, leave it, and have the client observe the site for 24–48 hours. Document the date, product, site, and result - including a documented refusal. Patch testing is a prudent safeguard, not a guarantee; sensitization to cyanoacrylate can develop after any number of uneventful exposures.
Traps
Treating a negative patch test as proof no reaction can occur; patch testing on the eyelid; diagnosing a condition instead of referring; skipping the consent form because "she's a regular."
Rule of thumb
When in doubt, don't apply - refer to an eye care professional and note the referral and the client's decision in the record.