We know how blisters are caused. The three culprits here are friction, heat and sweating. There are a lot of preventive techniques for blisters but walkers will try anything to prevent blisters. Here are some ways in which blisters can be prevented.
– Stay hydrated. Hydration is very important, especially sodium replacement, if required.
– Shoes. Shoes should fit properly or else blisters will be eminent; wearing shoes that are too snug or are too loose will create a problem. There should be a half an inch of space between the longest toe and the tip of the shoe. Toes should have enough space to wiggle inside the shoe and heels should not slip out when you walk.
For walking shoes that breath well should be used. E.g. shoes with fabric or mesh combined with leather instead of solid leather shoes.
– Socks. Socks should also like shoes not be too tight or too loose. Do not wear tube socks as they do not fit close enough to the foot.
The fabric of the socks should be soft wicking fabric. Do not use cotton socks.
– Lubricant. If you are in for a long walk then you should use a lubricant on your feet. Marathon walkers use this commonly.
– Blister Blocks, Second Skin and Spyroflex. There are some people who have specific places where blisters occur. If you are one of them then you should try and apply blister blocks, second skin or spyroflex before walking.
– Wrapping and Taping. If you are really concerned about your blister problem then you can use the wrapping and tapping technique. Wrap your toes with moleskin or tape your feet with athletic tape. Duct tape can also be used for this. Wrapping and taping is a generally used technique and is very affective.
What you have to be careful of is that if you are using this technique then the tape should be smoothly applied without any wrinkles and it should not be very tight.
People who are really into walking and/or are professionals tape their whole foot but most walkers just tape up the hot spots.
If you have a blister already then there is the Moleskin which is used to cover a blister.
Using a combination of these preventive measures will mostly guarantee you a blister free walk. These things and techniques should be done prior to the walk if you are prone to blisters. However, you can also take supplies with you on your walk so that if needed then you can immediately apply them.