How we test hair masks for hair growth:I’ve been a beauty journalist for over half a decade now, and testing products is a huge part of my job. From LED face masks and microcurrent devices to moisturisers, mascaras and, of course, haircare - yep, everyday is different. And, like every guide I put together, when testing hair masks for hair growth I wanted to make sure we were being as fair and inclusive as possible. That’s why you’ll see multiple Glamour writers, editors and contributors featured throughout this guide, rather than just me. Hair masks came up time and time again, and despite previously being far too lazy for the whole ‘get out of the shower, wait 20 minutes, get back in’ routine, I finally committed.