Hi I Had Sudden Outburst Of Comedons And Small Freckels

Hi
I had sudden outburst of comedons and small freckels on my face first time ever ...I am 28 yrs old .
It left a lot of marks on my forhead and cheeks
I consulted kaya skin clinic.
I have used HH lite cream for 3 weeks now...
As per my dosctors suggestion I applied on my full face . Skin colour improved, had become very fair and glowing .
I stopped applying this cream now my entie face has become very very dark
what can I do to get back the previous skin that I had