No, breast milk is not good for an adult face.
Breast milk is designed for infants and provides them with essential nutrients and antibodies for growth and development. It does not contain any properties that would benefit an adult's skin.
Applying breast milk to the face could potentially cause irritation, inflammation, or even infection. This is because adult skin has different pH levels and a different microbiome compared to infant skin.
There are many other skincare products and treatments specifically formulated for adult skin that are more effective and safe.