Julie got in touch to ask whether there was any reason to wash, rinse and repeat, or if it was just marketing hype. Phil Sansom spoke to two hair specialists, Sally-Ann Tarver and Eva Proudman, about this hairy issue... Like this podcast? Please help us by supporting the Naked Scientists
science & medicine,
kids & family,
The UK government has provided more than a billion items of PPE - why so much?
What makes instant coffee disappear so quickly into hot water?
If identical twins have children with identical twins, how related are all the children?
If dimpled golf balls fly better, why aren't there dimpled planes?
Is there any research on the antiviral properties of saponins?
Are astronauts still going to and from the International Space Station? A flight surgeon answers...
Do electrons leave their atoms to make electric current?
Do we all have the same number of nerve endings in our skin, regardless of body size?
Babies get their helpful bacteria when they're born. Does the same happen to a C-section baby?
Listener Jon keeps his pet frogs in a terrarium. If he sealed it, who would win: the frogs or the plants?
Fusion could be the most sustainable source of energy in the future. But how much can we get out of it?
Bigger dog, bigger brain - does that mean a great dane is cleverer than a chihuahua?
Can my kitchen sponges be used forever if I microwave them or put them in the dishwasher?
Sick of sunburn? Could it be your immune system?
When will the Earth's magnetic field next flip? Will it cause problems for our technology?
The immune system is supposed to hunt down invaders - why doesn't sperm get the same treatment?
Why is my phone signal sometimes good, and sometimes bad, in the same place?
Is it best to keep your home at a constant background temperature, or heat only when you need it?
We sought out the answer to this hairy question...