Please can anyone give me some advice,

My new husband lives in new york and im in england for now, the only way to be cloe to each other sexualy is to masturbate on webcam with each other, while doing this my Husband always splits the foreskin on his penis sometime there can be up to 6 splits around the head of his foreskin and some are deep, He has put lotion on before masturbating but it still splits, we have waited till it heals and then tried again but it still happenes,

Any advice on why this is happerning or how to treat it ?