Why arnt my fordyce spots on my penis going away after using coconut oil and lavender oil and tree tea oil? ?

I used coconut oil and lavender oil over warm water last year on my penis to get rid of fordyce spots and they went away within 2 months but now they are not going away, why is this? It feels like my skin is so used to it that now the oils don't have any effects. Are there any other natural home remedies?

2017-04-11T00:37:33.809Z