Avoid products containing any chemical ingredients that scrub too harshlyALAMY

1. Shampoo daily
According to the NHS, stress, cold weather and central heating combine to make a dry scalp and recurrent dandruff worse. Dandruff is a result of an overproduction of oil in the skin or an increase in normal skin yeasts. “Anyone can get a dry scalp at this time of year,” says Anabel Kingsley, a trichologist at the Philip Kingsley Clinic in London. “Dandruff flare-ups are also more common now and sometimes people get symptoms of both.”

Often the first thing people do when they notice tell-tale dandruff flakes is to cut down on shampooing, in the belief that it causes dryness and a build-up of residue that contributes to the problem. “Cutting back on shampooing can make matters worse, and in fact you…