Greetings. Chicken pox scars may be a little tough to treat. However, if there are only pigmented scars, then skin lightening creams under prescription and for a specified duration such as 4 to 8 weeks should do good. Also make sure you use a good sunscreen to prevent darkening of the scars. This should help. For further queries, i may be contacted on follow up messaging / or see a qualified dermatologist near you. Warm regards.

​​ Thanks for the query. ​​  I assume what you mean is post inflammatory pigmentation. Targeting through a single agent may not always be fruitful.There are different types of depigmenting creams available. Meet a qualified Dermatologist to learn more about the diagnosis and treatment options. Combination of different therapeutic agents is always beneficial. Revlite I.e. Q Switched Nd YAG laser can also be available. Hope it helps. Dr MK Agarwala  Dermatologist