To keep your leather headcollar looking its best in the long term and to prevent the leather from becoming brittle, it is important to clean it regularly. For this purpose, you can use the same leather soap and leather balm that you use for your bridle or saddle.
Apply the leather soap with a soft, slightly damp sponge and clean your headcollar thoroughly. Then apply a leather balm to the dry, clean leather and rub it in gently.