Hate needles? Love Emla. Emla Cream is a topical anaesthetic that can help numb the skin before needle procedures, such as injections, childhood immunisations, vaccinations, blood tests or cannula (drip) insertion. Emla can also be used before cosmetic procedures involving needle insertion or laser hair removal. Emla is suitable for adults and children of any age, from full-term birth and is available to buy without prescription. Make sure you apply Emla one hour in advance and always cover it with a suitable (non-absorbent) dressing. Conveniently, an Emla pack is available providing 2 suitable dressings. Always read the label.