Tetrahexyldecyl ascorbate

Can you use expired skincare products?

My dad shares three tips for determining whether you should save or toss your expired skincare products. Plus, a short review of Trader Joe's face serum.

Today’s a bit of a special day because I’m going to write about a product that played a key role in the birth of this blog! My Dad the Chemist was partially inspired by the time my dad saw me trying to compare Trader Joe’s face wash and serum—and, after taking a look at each ingredient list, he recommended the serum that I’m going to write about today.

How to choose a Vitamin C serum

Should you avoid vitamin C serums that contain water? And is clear packaging a no-no? My dad helps clear some things up.

Vitamin C is known by many names, but you’ll commonly see it listed as “ascorbic acid.” Deciem’s The Ordinary has written a pretty serious Vitamin C skincare guide that claims that once vitamin C (in the form of ascorbic acid) hits water, it begins to oxidize (lose its effect) and change into a darker yellow/orange color.