Before the treatment: the checklist.

7 days before: avoid blood-thinning painkillers such as aspirin, ibuprofen or diclofenac where possible – but never stop prescribed blood thinners on your own; that is discussed beforehand. Omega-3, vitamin E, ginkgo and St John's wort also increase bleeding tendency. Paracetamol is fine.

48 hours before: no alcohol, no tanning bed, no intensive sun. No peels, retinol or acids in the treatment area. Avoid dental appointments in the two weeks around a filler treatment.

On the day: come without make-up, or it will be removed. Have eaten and drunk something – on an empty stomach the risk of feeling faint rises. Comfortable clothing; nothing tight at the collar for neck or décolleté treatments.

Bring: a list of your medication, an allergy card if you have one, information about previous treatments (what, when, where). If you have a specific result in mind, say so – and hear whether it is achievable.

Reasons for cancellation: an acute infection (including a cold), cold sores for lip treatments, inflamed skin in the area, pregnancy or breastfeeding, fresh sunburn. Better to postpone honestly than to treat what is not sensible.