Thank you for the question. This is a very interesting observation and there are a few clinical studies published that have indeed shown an association between dairy intake and acne.
High dairy intake been shown to be associated with acne.
A high glycaemic index diet e.g. diet rich in refined sugars, has also been linked to acne. Taking excessive cakes and ice cream may not the best for your acne.
The cause of acne is multifactorial and diet control alone may not be sufficient to control acne. However, you can consider reducing your dairy intake and intake of refined sugars to see if this can help improve your acne.