I used A'kin replenshing body moist. Australian natural/organic product which is Paraben & sulfate free, but i was very fortunate and did not have any skin reddening until end of week 3
I also sampled ynatural.com.au (australian too),
'soothe cool calm gel', which cools & is all natural and was developed for those undergoing radiotherapy. I would recommend this if your skin is affected already.
Unfortunately i found at the hospital they recommend and give for free sorbolene based products, ( which i would not use because it contains petrochemical derived products), which is confusing for people, when nursing staff are stating 'this is what we use/recommend'.
You can read here about the ingredients of sorbolene
http://www.lookingforalternatives.com.au/clandestine-sorbolene/
Unfortunately when you start checking up on products that we use every day as consumers, it is a minefield of complicated chemical information, and up to individuals to determine what is best for themselves.