How can you really know what shade of liquid foundation @ target?

like with loreal, revlon, covergirl...how do u really know which color goes best with your skin?How can you really know what shade of liquid foundation @ target?
If I'm trying a new brand of foundation, I always wait until they have a buy one get one free promotion. Either CVS or Walgreens is bound to have any given brand on bogo at least one week out of the month, just check around. The reason I suggest this method, is that you will most likely miss a few times before you get the perfect shade. The only way you will know is to put the foundation on your skin and look at it in daylight. That's the downside of purchasing at a drugstore over a department store where they let you try the products out.How can you really know what shade of liquid foundation @ target?
You need to go into a shop which has testers and, ideally, try a little on the lower part of your face to see if it matches your face and neck.


If you can't do that then the inside of your wrist is the closest match to your skin. Also, if you want to try a lipcolour, the inside tip of your finger is closer to your lips than using the back of your hand.
find out their return policy, some targets in my area will take makeup back. Otherwise you need to find a place with testers or a place that has a good return policy on makeup like walgreens or rite aid.