Hello, I can understand your concern for the acne scar and chicken pox scars. For the acne scars and open pores I would suggest you to apply either glycolic acid and Azealic acid or kojic acid at night time under medical supervision. You should ask for the same and can get better relief of your problem by better guidance from a dermatologist. For chicken pox scar there are certain creams containing Etractum Cepae, Heparin Allantoin and hexilak silicone gels which can help a lot if applied continuously and regularly under medical advice. Other than that tretinoin can also be good option to modify the color and consistency of scar used under medical advice. It is seen to give good results in few months of time along with other therapies. Take care