Is there any reason I couldn't just buy any galvanic machine with an anode and cathode placement like below to make my own machine?

Hair Removal Methods Do-It-Yourself Electrolysis
1

My own galvanic electrolysis machine if that wasn’t clear.
https://www.ebay.com/itm/286645479379?_skw=galvanic&itmmeta=01JY9VXFGV8M2CNJR71K3PTKM7&itmprp=enc%3AAQAKAAAAwFkggFvd1GGDu0w3yXCmi1cCth1jdwdGhu%2F8nXthWnQR8Ev3PNe%2BkLGEFQVQnuu76VEazMe0324sAxX8Oha2TiWVyhB6OFwaD4GJPYm996unEzKv79jotxUG2G9nTvW10wrg5Aw%2BWe55WXsapJH%2B2%2BFb1u6XFTvP446995wJjLVhH4fSdxatNbCOsKIRIIbxXK7nc4B0ikMlv%2B1bM%2FZoREcJ8erfvCQEDH8T9fOR5ijaE4Q7zIi6p8BkNI5acDzB8Q%3D%3D|tkp%3ABk9SR9z49bvyZQ