im not sure how much help this will be to others, but im very familliar with contact dermatitis and chemical burns. first of all stop wearing the watch and get anyliquid paraffin cream such as epiderm and apply twice a day after washing. i was given it for severe 2nd degree and 3rd degree chemical burns after they had healed so were no longer open wounds but was unable to straighten my knee because of a extreme version of what everyone here is noticing. it cleared up amazingly fast with paraffin based creams. my guesses as to whats going on here: if it is a materials issue, i observed an extremely strong acetone smell on both my own and others watches i refused to wear mine untill i swapped the strap out and washed untill the smell had faded. no one else noticed anything other than a faint smell, but i could distinctly smell acetone very very strongly. the strap needs to be worn tightly for the hr sensor, and being non breathable it traps moisture from sweat. that would start to breakdown the top layers of skin if it is constantly moist. soap and detergent residue from handwashing in that same moisture trapping enviroment with constant contact really can cause 1st and 2nd degree chemical burns very quickly. i had full thickness burns from a detergent used in almost every liquid soap and shower gel, even verry dillute amounts will cause contact dermatitis over a few days. my questions to samsung would be: what plastic is the case back made of? and why would the strap and to a lesser extent the watch casing give off acetone fumes?
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