Egg whites, specifically, have been used as a traditional remedy for treating pimples, especially blackheads. They're slightly astringent and can temporarily plump the skin, which can help to shrink the appearance of a pimple. However, it's important to note that egg whites are a better option for treating blackheads or singular pimples, rather than chronic or cystic acne.
While egg whites might offer temporary relief, they are not a scientifically proven solution for acne. If you're struggling with persistent acne, it's crucial to consult a dermatologist for personalized advice and effective treatment options.