I havent heard that but I scored an aloe vera leaf and put the gel on every 20 minutes. I also bought Lily of the Desert 99% Aloe Gel for night or when i was going out.
I would suggest getting at least the gel and putting it in every 30 minutes.

The leaf and gel worked so well during my treatment that my doctor called me into his office after 3 weeks of being radiated every day, concerned he
mis calibrated me.
I asked him “ Are you concerned because im not burning enough?.” He said “Yes, youre not burning at all”.
In informed him his calibrations were correct and that it was what I was doing that caused no burning. I told him I was using the aloe leaf gel every 20 minutes.
Nature Works. Pass the Aquafor and use a real leaf or Lily of the Desert religiously.