i am 37 y, i was massaging my penis with the mixer of sesame seed oil & castor oil, ejaculation occurred during massage after then my penis head is slightly stiffed & some area are look more blackish & extensively touch sensitive in dead even from soft cloth
Better stop using the mixture of oil of some kind because of the friction action such as blacking of skin. May be, if you stop using the oil every thing would be fine soon. Hope this helps.