Why polyglutamic acid is the serum your skincare routine is missing

From Netdoctor Polyglutamic acid (often abbreviated to PGA) holds up to 10 times more moisture than cult skincare ingredient hyaluronic acid (or HA), making it one of the most powerful hydrating ingredients around for tired, dry and dehydrated skin. The hydrating serum is a favourite among beauty bloggers, who’ve been touting top products – such as The Inkey List’s polyglutamic acid – and praising the skin benefits of polyglutamic acid more generally. From slowing down the ageing process to boosting skin elasticity, we asked dermatologists to discuss polyglutamic acid skin benefits, advise how to incorporate this product into your skincare routine, and explain whether you should ditch...