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CNDU™ was launched so we could reach every nail professional throughout the United States– no matter where they are, and deliver quality education that elevates their skills and helps them build their business. If you have a question or comment about CNDU™, please select the appropriate department for which your request pertains to and complete the form below. Your request will be responded to within 48 hours during normal business hours (Monday-Friday, 8:00am-5:00pm PST).