There is limited scientific evidence to support the idea that protein powder can directly help acne. However, getting adequate amounts of protein is important for overall skin health, as protein is an essential building block for skin tissue and helps to support the skin's barrier function.
Consuming a balanced diet that includes a variety of protein sources, including plant-based sources like legumes, nuts, and seeds, as well as animal-based sources like dairy, eggs, and lean meats, can help to ensure that your body has the necessary building blocks to support healthy skin.
In conclusion, while protein powder may not directly help acne, consuming adequate amounts of protein as part of a balanced diet can support overall skin health. If you're experiencing persistent acne, it's best to consult with a dermatologist or a healthcare professional for individualized advice and treatment.