Yes, it is generally safe to apply raw milk on your face overnight. Many sources, like the article "Incredible Raw Milk on Face Benefits, Uses ~ Study Backed ...," suggest that leaving it on overnight allows the benefits to penetrate the skin deeply, resulting in a fresh and glowing face in the morning.
However, it is important to consider your individual skin type and sensitivity. If you have sensitive or acne-prone skin, it is recommended to rinse the raw milk off after 15-20 minutes to prevent irritation, as mentioned in the reference "It is generally safe to leave raw milk on the face overnight."
Some sources suggest that raw milk is a great natural cleanser and moisturizer, especially for oily or combination skin. It can also help to remove dead skin cells and brighten the complexion.
It is important to note that if you have any concerns about using raw milk on your face, it is always best to consult with a dermatologist.