Firstly I would advice you to stop using Vichy and proactive products. Though they are good but response to these creams can vary from person to person. To treat acne
, use a mild salicylic acid
face wash and a water based moisturiser. If you are having comedones, get them extracted. Also visit a dermatologist
, to get your skin analysed so that an oral antibiotic or oral isotretinoin
can be started along with anti acne creams. Once your skin is better with medication, you can switch over to either of the products you have been using as maintenance(proactive or Vichy).Hope that solves your query. Take care.