Can I use Flex Foaming Cup Wash on my body? Zori January 07, 2021 00:22 Updated Follow Absolutely. Flex Foaming Cup Wash is safe for use on all your external body parts. If you have any additional questions, reach out to us at here! Related articles Can I use Flex Foaming Wash on other silicone menstrual cups? How do I use the Flex Foaming Cup Wash to clean my Flex Cup? Why do I need a specific wash for my menstrual cup? Can I travel with the Flex Foaming Cup Wash? Flex Cup Care Instructions Comments 0 comments Please sign in to leave a comment.