What the Queen of Egypt understood intuitively, modern dermatology has since confirmed through decades of research. Lactic acid stands among the most thoroughly studied skincare actives, with documented benefits for exfoliation, hydration, barrier function, and anti-aging. But here's what makes it particularly interesting for those seeking gentle, effective skincare: lactic acid occurs naturally in goat milk at concentrations that deliver benefits without the irritation associated with high-strength synthetic formulations.

Powdered milk production involves spray-drying or drum-drying processes that expose milk to temperatures typically ranging from 150°F to over 400°F, depending on the method. This heat treatment accomplishes two industrial objectives: it removes water (creating a shelf-stable, lightweight product) and it kills microorganisms (extending storage life).

But not all goat milk skincare is created equal. The difference between fresh goat milk and powdered reconstituted milk—the kind many commercial brands quietly use—represents a distinction that matters at the molecular level. Understanding the science behind goat milk helps explain why, and why discerning consumers are learning to read labels more carefully.