Who is Dr. Krause?Dr.Franz Krause - creator of Dr.Krause Ingrown Toenail Corrector, got his degree in the Yale School of Medicine and practiced medicine for a while, performing complicated surgeries in podiatric field. For his invention, Dr. Krause was nominated for the International Harvey Prize in the field of medicine in 2009.How Does Nail Corrector Works?Ingrown toenail is the result of nail growth inwards the surrounding skin due to curvatures of the nail. Our Nail Corrector straightens curved toenail, lifting each side of it and hereby reducing pressure against the skin while Nail Retainer helps to apply a gentle force to keep nail straighten.Most customers notice pain reduced in 10 minutes, the nail becomes visibly less curved in 7 days.99-Day GuaranteeIf Dr.Krause doesn't get rid of your ingrown toenail, and we can't help you, just return it to us within 99 days. We'll refund your purchase regardless of how much you've used with no questions asked. This is the level of confidence we've gained after helping our customers get rid of thousands of ingrown toenails.What will I get after purchase? 1x Nail Corrector – designed to correct the curve of the nail 6x Headers – special caps for Nail Corrector that are suitable for different sizes and shapes of nails including thick toenail 12x Nail Retainers – small springs, that are applying a soft force on nail to keep curve straighten 1x Tweezers – specially designed to make the process of putting Nail Retainers as easy as possibleInstructionsIn every Dr. Krause Ingrown Toenail Treatment Kit Package we include insert with link to our website, where you will find instruction with a visual demonstration that will help you figure out how to use it.Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.