Thanks for the detailed history posted to us
I shall try to answer your queries one by one
First of all rest assured , you are on right prescription for acne . Isotretinoin
is very effective for cystic acne
. You have used it for just a week , you need to continue it , improvement may be seen in a month or more as far as acne is concerned. For scars you need different treatment llike dermaroller
or fractional laser but can be started only if acne is under control ,so lot of patience is required .
and tretinoin both are retinoids
which can cause dryness and redness (The effects of both being added up) They may also cause photosensitivity
.So Strictly avoid sun exposure and also use a broad spectrum sunscreen . For the time being you may use adapalene and clindamycin
combination only at night.
To get rid of dead cells and redness ,do as follows:
Keep your face well hydrated with non comedogenic moisturisers
Use mild cleansers
apply a mild steroid cream for a week on the red areas
If this does not help you might require a short course of oral steroid under prescription.
Use a sunscreen during the day
Hope this solves your query