This is the first time I have used this type of product at home.  I wasn't sure what to expect, but I am satisfied so far.  The serum is easy to apply and goes on in a similar way as moisturizer.  A little bit seems to go a long way.  There is a mild odor to this product, but since it's rinsed off after 10 minutes, it isn't long enough to give me a headache.