Question: what is the best product to use for chafing?
Answer: Lip balm. We like: Lucas Pawpaw Ointment ($8; amazon.com) ... 
Petroleum jelly. We like: Vaseline 100% Pure Petroleum Jelly Skin Protectant ($7 for 2; amazon.com) ... 
Body Glide. We like: BodyGlide Body Glide For Her Anti Chafe Balm ($8; amazon.com) ... 
Spanx.