06-01-2018, 18:16
not sure what do u want skin needling for, but this article is super useful for dermarolling
https://simpleskincarescience.com/dermarolling/#Vitamin_C_Sodium_Ascorbyl_Phospate

https://simpleskincarescience.com/dermarolling/#Vitamin_C_Sodium_Ascorbyl_Phospate