I served my kids a lot of milk as they were growing up. Hormone-free. All of them (especially my oldest) developed severe cases of acne in their early teens. We tried everything. And I mean everything. Expert dermatologists, every product, homeopathic treatments…you name it. But it wasn’t until my oldest stopped all dairy (after a recommendation from a friend) that her skin cleared up completely within a week. I wish I had known earlier. I feel so bad.