This Review Title is Works and makes buying jewelry less of a guessing game and the content is: I just recently found out I have a Nickel allergy.  According to my dermatologist, both "real" and costume jewelry can have Nickel mixed into the metal (along with belt buckles and snaps on pants, etc), so he suggested I buy this to carry with me to test jewelry before I buy it.  I just whip this little test kit out of my purse and swab the jewelry before I commit to buying it.  The solutions fit into the provided prescription style bottle, along with a few Q-Tip cotton swabs (which you have to provide).  All you do is put 2 drops of Solution A and 2 drops of Solution B on the tip of a swab and wipe it across the metal for several seconds.  If the swab turns pink (it's not a bright pink, so be sure to look closely), it contains Nickel.  This sure beats breaking out into itchy blisters!.There are other information for this review, one is This reviewer did purchase it and the other is 2 people think this review is helpful.