Physical beauty tools and AI driven beauty techniques have really started to interest me, although I am being mindful to stay away from product design and becoming preoccupied with cosmetology, these are very interesting and indicative of a fourth industrial revolution.
https://www.foreo.com/luna-play-plus
https://www.georgialouise.com/shop/facial-freeze-tools
https://www.dermalogica.co.uk/can-blue-light-damage-skin/can-blue-light-damage-skin,en_GB,pg.html