Tret + Derma Stamp legit?

[Reirto]

I saw Salludon said its great for increasing collagen but people often say your skin barrier cant handle that much irritation at once, so which one is right?

 

[carthmtn]

just derma in the morning and tret at night

 

[zaycism]

I saw Salludon said its great for increasing collagen but people often say your skin barrier cant handle that much irritation at once, so which one is right?

both are right, you use tret on nights u dont dermastamp, u use dermastamp on clean skin and avoid using tret for 1-2 days because it can lead to irritation
mark solution

 

[Reirto]

just derma in the morning and tret at night

is it any different than doing it a different day?