Thanks for the query.
Skin care is a daily ritual shaped by age, gender, socioeconomic status and internal health.
Skin care needs to be customized based on the presenting complaints.
Based on your description, it appears that you have facial melanosis.
These conditions have a strong relation to one's internal health and it needs to be evaluated as often quoted - Skin is the mirror of internal health.
Your dermatologist will decide a treatment plan for you after a consultation which probably will include a retinol based night cream and a vitamin C based lotion.
Sun protection is mandatory and will require usage of Sunscreens. You may benefit from usage of a Laser device i.e. Q- switched N d YAG. Internal health needs to be fixed based on blood chemistry reports.
Apart from active pharmaceutical medicines, a healthy diet and lifestyle is mandatory to achieve results.