Highest Quality — We work hard to produce high-quality biotin pills to meet and exceed your expectations. However, if we fall short of your expectations, please drop us a message, and we will do everything in our power to respond promptly and fix the issue as soon as possible because you deserve it. Each serving of 2 capsules contains a blend of Vitamins B2, B3, B6 & B7 (Biotin), totaling 25,000 mcg . This dosage does not include the weight of Collagen & Keratin.