Bridal Trial and a PPD Reaction
A bride, 27, is getting married in five days. At her trial six weeks ago she reacted to nothing in the foundation, but she reports a severe reaction two years ago to a hair dye: facial swelling and blisters that needed medical treatment. She now wants 'black henna' brow tint, a lash tint and individual lash extensions at the same appointment. The salon's lash adhesive contains cyanoacrylate; the henna paste is a market product labelled 'black henna'. She refuses a patch test because she has 'no time', and asks for waterproof mascara and a long-wear lip stain. The makeup artist has a free 30-minute slot today and the wedding is on Saturday. The bride says she will sign a consent form and threatens to go to another salon if refused.
1. Assess the risks of the requested brow tint, lash tint and lash extensions. Is there enough time for patch testing?
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A previous hair-dye reaction with facial swelling and blisters suggests sensitisation to paraphenylenediamine, or PPD, a common dye ingredient. 'Black henna' pastes frequently contain PPD, sometimes at very high levels, and applying it to the brow area is especially dangerous: the skin is thin, close to the eyes, and a severe reaction can cause angioedema, blistering and scarring. Lash tints may also contain dye intermediates, and cyanoacrylate lash adhesive can cause allergic dermatitis or eye irritation. Five days is enough time for a patch test if it is applied today and read at 48-72 hours, which is before Saturday. However, a patch test reduces but does not eliminate risk, and it cannot make a known PPD-containing black henna product safe. That product should be refused regardless.
2. What service plan would you offer, and how do you handle her refusal and threat to go elsewhere?
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Offer a plan that avoids the known allergen. Use a brow pencil or powder matched to her hair, not black henna. If she still wants a tint, use a product whose ingredients you can verify and patch test it today, reading before the wedding. For lashes, patch test the cyanoacrylate adhesive; if negative, apply strip lashes with that adhesive or use magnetic lashes, and keep the adhesive away from the eye margin. A waterproof mascara and lip stain can be patch tested or chosen from products she has used before. Do not perform an untested lash tint or any black henna service. Explain the reaction risk and record her refusal, the advice given and her decision. A consent form does not remove the duty of care. If she leaves, that is her choice; do not chase the booking by lowering the safety standard.
3. What would you do if she developed swelling and itching during the service?
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Stop the service immediately and remove the product with lukewarm water, taking care not to let it run into the eyes. If the eye area is involved, rinse gently with saline or clean water for several minutes and do not rub. Assess for lip or eyelid swelling, spreading redness, blistering, wheezing or difficulty breathing; any of these needs urgent medical referral or emergency services, not a cold compress alone. For mild itching without systemic signs, apply a cool compress and advise her to see a pharmacist or doctor before taking any antihistamine. Record the time, product, batch, symptoms, action taken and referral. Keep the product container. Photograph the area with consent. Review the salon's patch-test and consent process afterwards, because an adverse event is also a systems problem.