Derma rollers for hairloss. Do they need to be replaced? If so how often?

[rickwood911]

I'll probably be using it 10 mins a session, 3 sessions per week.

 

[Gaygymmaxx]

replace your saliva with my nuts, meaning put them in your mouth. Sounds good?

 

[Lawton88]

I'll probably be using it 10 mins a session, 3 sessions per week.

If you are using one that much I would replace it every 2 months at least.