The most important thing about bathroom hooks is that they’re waterproof. Only then can they securely hold towels, shower gels, toothbrushes and other bathroom utensils over the long term. But the wall tiles in bathrooms often make it very difficult to drill a hole into a wall because surfaces are invariably damaged. That isn’t necessary though! Self-adhesive bathroom hooks can provide a powerful grip and thus objects can be hung on them reliably.