I’m between a III and IV and Gentlelase is great on me…would it work for my sister who is a type IV?
I was considered a type IV. im an indian with kinda fair skin and im getting treatments with a gentlelase at 18-20 joules, 18mm spot size. The only way to determine if you can use this laser is to have test spots. If you can handle settings of 18-20 joules on 18mm spot size, then this laser will give you the best chance of success.
concur with Saf. get test spots and see what you can handle. skin types are not set in stone.