This stuff is amazing! It really helps with red marks, and also reduces inflammation.
I used a bit mixed into calendula cream (or sometimes just water) and left it on for 30mins, or sometimes id leave it on over night, I found this method very good.
However turmeric stains everything yellow! its very messy and so I have got sick of using the stuff. my pillows, clothes, flannel and bathroom surfaces have a fluorescent yellow hue to them!
Highly recommend but stains be warned!