Bring your own toiletries if you prefer specific brands; Frankfurt lounge shower kits are convenient but may be basic.

https://www.scribd.com/document/1053611817/How-to-Access-the-Frankfurt-Airport-VIP-Lounge-Eligibility-and-Perks-186956

Bring your own toiletries if you prefer specific brands; Frankfurt lounge shower kits are convenient but may be basic.