Recently I ordered and used owndoc 0.5mm, 1.5mm dermarollers and 1.5mm derma stamp.
Because I roll aggressively my face gets covered in blood and blood creeps into behind the rollers and stamps needles (Please see the photo). They recommend to use plant sprayer to clean them. With the 0.5mm roller I didn't use the plant sprayer, just washed it under warm water, but blood didn't come of I even used small brush with soap. Then when I used 1.5mm roller I used plant sprayer every time it was covered with blood, although it helped allot, there is some blood left inside the roller (under the needles) Since the drum is see through you can see some left over blood.
My question is can I use these rollers again? Does any one know or had similar issue with rollers? To sterilise them I use dermaroller cleaner spray which is alcohol based and purchased it from amazon.