Can the NIA 24 products be used with hydroquinones?
Yes. Patients have seen successful results using NIA 24 in combination with hydroquinone. However, because of the efficient penetration properties of the Pro-Niacin molecule and especially if only spot-treating with hydroquinone, apply the NIA 24 products first, waiting several minutes prior to applying hydroquinone to ensure maximum efficacy of the Pro-Niacin molecule and to avoid irritation.