hi my question concerns on how long friction burns tend to last. About 2 weeks ago I used a brand new bath sponge on my inner thighs/butt and I may have scrubbed a little too hard. It has gotten better because I did have some small red marks where my tail bone is and some of the upper/inner butt, but those have recently gone away. Mainly it is now in the area under the genital and inner cheeks. There is a slight burning sensation but nothing that keeps me from walking or sleeping. On a scale I would say a 1 maybe 2 of pain.