Every product is marked with a batch code that begins with a letter followed by 4 or 5 numbers.
Below is the list of letter codes and corresponding years:
|C - 2005||L - 2013|
|D - 2006||M - 2014|
|E - 2007||N - 2015|
|F - 2008||P - 2016|
|G - 2009||R - 2017|
|H - 2010||T - 2018|
|J - 2011||U - 2019|
|K - 2012||V - 2020|
|W - 2021|
So, for example, the batch code M2009 would have been made in 2014.
Calagel and Rash Relief Spray have expiration dates. We do not recommend using it past the expiration date.
For all other products, we recommend throwing them out if they were manufactured more than three years ago. Tecnu Original will also change color as it ages. If your Tecnu Original turns yellow or brownish in color, throw it away and purchase new product.