Updated: Mar 27, 2020
Patch testing is a method of testing a new skin care product or ingredient to see if it will work for your skin. Many skin problems are caused by using ingredients that cause irritation on the skin.
Personally, I get excited to switch up my skin care routine and sometimes forget to check the ingredients of the products or patch test. This irritates my skin and it becomes hard to tell exactly what caused the irritation as I introduced more than one new product/ingredient.
Is patch testing putting a sample of the product on a part of your skin and waiting a couple of minutes for the reaction? Definitely not. You should patch test every new product you introduce to your skin for at least 5-7 days. How should you do this? Apply a bit of the product on areas where you are most sensitive e.g. behind the ear and the corners of the nose, in small quantities so that should it cause an irritation, it won't destroy all parts of your skin.
I know how exciting it is to get new skin care products ad want to try them almost immediately. I mean, you can slather the product all over and pray, but better safe than sorry, no?