The coat change begins - usually unnoticed by the horse owner at first - when the days become shorter or longer , i.e. on December 21st and June 21st of each year. The horse's coat change should ideally be supported from this point onwards. Especially if the horses have metabolic abnormalities such as eczema, itching, poor immune systems, a tendency to get sick , etc. The coat change does not just begin when the hair falls out, but rather puts a strain on the horse's organism much earlier. That's why it's important to support horses that aren't so fit right from the start of their coat change - when the days get longer or shorter - and not just when the horse's hair falls out.