Hi I'm actually facing dark skin on my neck, I used hydroquinone but its affect was minimal and I couldn't get desired result, my dermatologist told I have fungal infection so I started using vavo shampoo with 2% ketozcole but still the affect in minimal, I've currently purchased a hydroquinone 4% with additional salts fluocinolone Acetonide and tretinion, I read some where on web MD that fluocinolone acetonide can worsen skin infection so is that true or I could use this hydriquonone