I use the Replens lubrication and find it good, but I also need to use a vaginal wash and daily external moisturiser too to prevent the outer skin drying out and hurting.
The best thing I have found after suffering very uncomfortable sex for quite a few months was the Pujr water based lubricant. Bought it at an adult shop while on holidays and it made all the difference.
It has actually helped my libido because I am not afraid of the pain which kills the enjoyment stone dead.
Now just to get over the chest infection and radiation burns and I might feel like going there again.