Bulletproof Unflavored Collagen - Sourced from grass-fed cows and enzymatically processed several times, to leave its nutrition-giving peptides intact. That makes Bulletproof Collagen highly bioavailable (for maximum impact) – resulting in a neutral-tasting, odorless protein that doesn’t thicken and mixes easily. Adding collagen to meals replenishes an often missing ingredient in the Western diet and supports strong, hydrated skin, healthy tissues, high energy and better performance.