herbal salt bath for eczema

good morning herbalists,

i have excessive dry skin and eczema. im looking to supplement my usual oils/lotions with salt & oatmeal baths, and i want to add herbs to help moisturize and soothe the skin. i have chamomile already as well as lavender, dead sea salt, epsom salt, and regular sea salt. ive seen calendula suggested here before, but havent seen it in the loose herbs section of my store, so a link to an online retailer in the US would help a lot as well.

im looking for a recipe for a soothing, cleansing herbal bath salt mix that will help moisturize my skin and get it to calm tf down. as the weather gets colder around here its like my skin just gets drier and itchier.

also, the dry skin tends to get flakey and i dont like that. are there any herbs with mild exfoliant properties? or that can be added to an exfoliant to help with healing?

thank you for any response 💕🌿