Helmet gets plonked on and my hair protrudes like an unkempt Spaniel’s ears but hey, whatevs!
Also handy for those of us who are balding and suffering the opposite problem...A buff or hairband is your friend then..
I was mountain biking in Wales with a friend of mine and we stopped on an exposed hilltop in a forest. It was a baking hot day and I took off my helmet as we sat eating our mid-ride goodies...
"Oooh, er, Col - the sun has burned red stripes on your scalp through the slots in your helmet!"
We nipped down to Dolgellau and I bought myself a Welsh Dragon buff which I have been using off and on for the 17 years since. It not only prevents scalp burn on sunny days, it is also good for stopping sweat getting in the eyes.