Can I use Flex Foaming Cup Wash on my body? Zori April 08, 2021 21:04 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? Can I travel with the Flex Foaming Cup Wash? Why do I need a specific wash for my menstrual cup? How do I pause my subscription? Comments 0 comments Article is closed for comments.