Hi Nisha,
Thanks for writing to us.
You have mentioned three skin concerns-
dry skin, blackheads and dull complexion
Presence of dry skin and comedones possibly suggest that you have a combination skin where your T zone( forehead,chin,nose) is oily and rest of the face is dry. To treat the same, use
cetaphil face wash and moisturiser daily. To remove blackheads-
use a mild scrub once in a week
Do warm water compresses at the affected area for five minutes
Use a comedone extractor to remove the comedones/ blackheads
Ice the area and apply
adapalene gel
Regular use of adapalene gel at affected area in night would prevent further recurrence.
To brighten your complexion, use a water based sunscreen in morning. Use
Kojic acid vitamin c based cream like kojivit daily. Its a mild cream and in long run safe. Regular use, would brighten up your face.
Hope that helped.
Take care