Hi...
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns...
As per your complain Deriva C gel contains 0.1% Adapelene and Clindamycin is an effective anti-acne composition.
In case of severe Inflammation and extensive pimples it can take a longer time to resolve and you should continue applying.
There seems to be no side effects and all symptoms are due to inflammation..
You should also wash your face with
Salicylic acid containing face wash..
Apply
Benzoyl Peroxide gel over the pimples..
Do cold compresses..
Exfoliate your skin twice a week using a gentle scrub..
Avoid sun exposure, do not take oily food.
Drink plenty of water and take Multivitamin supplements..
You can also
consult a Dermatologist and he can advise you to take
Oral antibiotics like Clindamycin or Minocycline or Muricoprin and Oral retinoids..
You can also go for Glycolic acid peels and
Microdermabrasion for faster clearing of pimples..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.