I agree with what everyone else has said. I’ve always had sensitive skin and allergies, and as an adult I’ve had atopic eczema for years.
LIke others said, I use my own (fragrance-free) shampoo, conditioner, and soap. I keep the soap in a little container that I take everywhere with me, because just one or two hand washings with random soap in a public bathroom can make my eczema flare up. I use fragrance-free laundry detergent and don’t use dryer sheets.
I use CeraVe cleanser as my soap and use their moisturizer throughout the day as well. I try to avoid washing my hands unless I’ve just used the washroom or am about to eat. I wear disposable gloves when preparing food or doing the dishes, because those really irritate my hands. I also don’t use hot water when doing dishes, having showers, or washing hands, because that makes my eczema worse.
I’ve also been prescribed clobotasol cream, and the way my dermatologist said to use it was to use it twice a day on active eczema spots, then to use it twice a week on those same spots (once they’ve faded) to keep them from coming back, otherwise as you said they’re back within a week. I also use eczema/dandruff shampoo twice a week, alternating brands, and use my regular shampoo the rest of the time.
I also recently was reminded of the importance of being careful about what you wear. I’ve frequently broke out in rashes from clothing, and have frequently gotten rid of clothing because I can’t wear it. I recently went on a trip up north where both the hat and gloves I wore made my skin break out in a rash that felt like it was sunburnt. A friend of mine who also had allergies/eczema recommended I get sweat-wicking hats and gloves because apparently sweat (even though I didn’t feel sweaty at all) can cause skin to try out and make eczema worse.
I’m extremely allergic to dust mites, and I have a theory that exposure to them makes my eczema worse, because it’s often worst at night and first thing in the morning. I have dust mite covers on my mattress and pillow, wear an allergy mask and gloves while cleaning (I’m moving towards using only natural cleaners rather than chemicals), and even have a portable dust mite sac that I bring with me to hotels so that I don’t wake up super allergic in the morning.