Don't forget quality eye protection. Not only is it important to shield your eyes from the effects of high altitude and foul conditions, goggles will help keep you warmer on a blustery day than sunglasses can. Putting antiperspirant on the feet will also help stop moisture. If you use an analgesic cream and antiperspirant, apply the cream first. Changing socks at lunchtime will help keep feet dry.
Thermal socks can isolate the foot from a cold inner boot.
Check that your boots fit properly, without pressure points that may restrict circulation. Adjust the position of your foot in the boot through use of a heel wedge or pad on the inside to hold the foot. An insole will also help to insulate. If you are nervous about doing this work yourself, take your boots to a ski or snowboard repair shop. Click here to find snow sports shops in your area.