Generally speaking, protein powder doesn't directly cause acne. Additionally, we haven't had any of our customers report that their Gainful blend increased their acne.
However, acne can be a possible side effect of whey protein consumption for those with whey or lactose allergies. In this case, it can be assumed that any dairy product (milk, cheese, yogurt, or cottage cheese) would do the same thing. Sometimes trial and error is the best method to figure out how your body will react. If whey does in fact cause skin issues for you, we offer 100% plant-based options as well. If you have additional concerns, we recommend consulting with your doctor or dermatologist.