A: The short answer is yes, all of our products are considered hypoallergenic. The long answer is that hypoallergenic means that a product is formulated with the fewest possible allergens, but because everyone’s skin is unique it’s impossible to say that any product on the market is 100% guaranteed to have no allergic reaction. Any given substance used in food or skincare products has a chance, however minimal, that it could produce an allergic reaction in some very small fraction of the population. even natural ingredients can have an allergic reaction in a very small number of people. To date we have had no reports of allergic reaction to any of our formulas. Please note you may feel a tingling sensation with the Peptide-C Serum as the vitamin C is absorbed into your skin. This sensation tends to diminish with repeated use. however if you experience persistent redness and/or irritation, discontinue use and consult your physician.