Luseta Biotin B-Complex Hair Mask: Designed to intensely moisturize without weighing tresses down, luseta biotin B-complex hair mask, a densifying hair and scalp treatment that deeply nourishes locks and stimulates hair growth for a healthier, thicker, and fuller-looking mane. Blended with biotin, caffeine, and niacin, which improves shine while giving hair a boost at the roots, lending fullness to flat locks.