Some Heathrow lounges offer dedicated shower suites, hairdryers, and premium toiletries

https://www.scribd.com/document/1065269088/Heathrow-First-Class-Lounges-The-Ultimate-Luxury-Experience-128120

Some Heathrow lounges offer dedicated shower suites, hairdryers, and premium toiletries, turning a long layover into a mini spa moment that helps you feel your best.