How do I heal my labia and thighs from laser hair removal burn? Can Obagi hydroquinone 4% be used to lighten my vagina? (Photo)

I just got burnt by laser hair removal a day ago. I'm putting triamcinolone ointment to help with the swelling, which has reduced significantly but there is still swelling. I have 2 dark spots on my vagina, and the burnt marks on my thighs. My therapist suggested Obagi hydroquinone 4% to help with the pigmentation and to lighten my vagina. Am I doing the right process to heal? Can obagi hydroquinone be used in this region? What else can I do to help decrease and help the damage?