How to Make: The Toothbrush

BBC FOUR

Tuesday 31 May 2022  23:35 - 00:35 (60 mins)
2/3. Designer and materials engineer Zoe Laughlin explores the science - and conducts her own experiments - behind creating a more sustainable solution for brushing our teeth. Also in HD. [S]

How to Make: The Toothbrush may be available on playback
How to Make: The Toothbrush (BBC FOUR) Tuesday 31 May 2022 23:35 - 00:35