anyone here cure anything with oils .......

i've been reading about oils lately & they seem so amazing . has anyone here cured something they would like to tell about ? and what did you use or would you recommend ? i've got candida & rosacea myself . can anyone here give a opinion about oils or blends for these conditions ? and , does anyone here use a diffuser for oils & which ones do you use ? thanks to all , any advice is appreciated ...... tbo