"Use the BOBO OILS - Derma Roller twice a week, allowing ample time for your skin to heal.
Mild redness and itchiness may occur after usage, which is normal.
Replace the derma roller after six months to maintain optimal needle sharpness.
Do not share your derma roller with anyone else.
Always store the derma roller in its original box to protect the needles from damage or contamination."
https://bobooils.com.au/produc....ts/bobo-oils-derma-r