A previous tint reaction, a deadline, and a request to skip the patch test

Significance. A red, itchy, puffy eyelid reaction appearing about 24 hours after a tint is a textbook delayed (type IV) allergic contact dermatitis, most likely to a dye ingredient such as PPD or toluene-2,5-diamine, or to another component of the tint. It happened after several uneventful tints, which is exactly how sensitisation works: the first exposures prime the immune system, and a later exposure produces the reaction. Once sensitised, the allergy is lifelong, and subsequent reactions can be faster and more severe - including marked eyelid and facial swelling and, rarely, a generalised or anaphylactic response. 'It was a cheap product' does not make it safe to repeat.

Decision: do not perform the lash or brow tint, on Thursday or at any point.

A patch test is designed to detect sensitivity in someone with no history; in a client who has already reacted it is not a reliable green light. A small test dose may itself provoke a reaction, and a negative result does not guarantee that a full application will be safe. Manufacturer and insurer guidance is to avoid tinting a client with a known reaction to tint. Timing also works against her: a test read on Wednesday leaves no margin to manage a reaction before she flies, and any delayed reaction would surface while she is abroad.

Alternatives to offer:

• A lash lift on its own, provided a patch test for the lift solution (which contains thioglycolate, a different chemistry) has been done 24-48 hours beforehand and she has no reaction. Her previous lift was uneventful, but a test is still required.
• Mascara, a lash primer, or strip/individual lashes with an adhesive patch tested in advance - practical for a holiday and easy to remove.
• Brow shaping plus brow pencil, pomade or tinted brow gel, which give colour without any dye touching the skin.
• Suggest she asks her GP about referral for proper allergy testing if she wants tinting in future, so she knows exactly which ingredient to avoid.

Handling the disclaimer: explain kindly but firmly that a signature cannot make an unsafe treatment safe. Consent must be informed, and you cannot obtain valid consent to a treatment you believe carries a real risk of harm; a waiver does not transfer your duty of care or protect you, or her, if she reacts. Say it in her terms: 'If your eyelids swell on the flight, a form won't help either of us.'

Record: the reported reaction and its timing, the decision not to tint, the patch test offered, the alternatives offered, the disclaimer declined, and her response. Do not charge for the refused service.

Contact lenses. They must be removed before any eye treatment and before the patch test; she should bring glasses and should not reinsert lenses for the period the manufacturer advises after treatment (commonly around 24 hours), because residue and manipulation can irritate the eye.

Recent cold sore. Healed three weeks ago, so it is not an active lesion and does not by itself rule out a lash lift. Ask directly about current tingling, blistering or scabs, and about any eye infection, stye or conjunctivitis; if any are present, reschedule. Good hand hygiene matters because herpes simplex can be transferred by hands and implements near the eye, and she should reschedule if a cold sore becomes active before Thursday.

Other checks before lifting: patch test for the lift solution 24-48 hours before; condition of the natural lashes (sparse, brittle or over-processed lashes should not be lifted); recent eye surgery or lashes tinted/extended elsewhere; dry eye or sensitivity; pregnancy, since hormonal changes can affect how the lift takes.

Aftercare instructions: no water, make-up, steam, sauna or swimming for 24 hours; no waterproof mascara; do not rub or sleep face-down; avoid oil-based removers; use a lash conditioner; book a re-lift after about six to eight weeks. Do not tint. Confirm all of this in writing.