For shiny softness … don’t wash your hair

<span>‘I turn my shower head to jet once a week and give my scalp a lovely massage.’</span><span>Photograph: Getty</span>
‘I turn my shower head to jet once a week and give my scalp a lovely massage.’Photograph: Getty

I haven’t put shampoo in my hair for 12 years, and it’s soft and shiny (Is it true that … shampoo is a scam, because hair washes itself?, Saturday magazine, 30 December). To get rid of the “build-up of sweat and dirt”, I turn my shower head to jet once a week and give my scalp a lovely massage, and clean my hairbrush regularly. The first time I went to my hairdresser, she thrust her nose to my head and said: “It doesn’t smell!”
Venetia Caine
Glastonbury, Somerset

• Your letter writer suggests creating a tropical biome close to the M40 to preserve a 165m-year-old dinosaur trackway (7 January). The tardy evolution away from fossil-fuelled transport and consequent climate change is doing this already. It’s the M40.
Dr Jonathan J Ross
Sheffield

• I trust the president-elect will look kindly on any demand from Russia to reclaim Alaska, or Mexico to reclaim California (Trump refuses to rule out using military to take Panama Canal and Greenland, 7 January)? After all, aren’t these areas essential to the national security of their former owners?
Ged Meheran
Swindon, Wiltshire

• In the 1950s, our school jazz band greatly enjoyed listening to and playing Muskrat Ramble. The regularly reported modern Musk rat rambles are repellent to read (How low will British politics go? Ask Elon, master of the Muskoverse – he’ll decide, Opinion, 7 January).
Dr Chris Newall
Ealing, London

• Re Mark Zuckerberg’s decision to ditch factcheckers on Facebook to “prioritise free speech” (Report, 7 January), what sort of “free speech” is prevented by factchecking?
Dr Charles Smith
Bridgend

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