How to Blister a Horse

Yes You Read it Right, Sometimes it is Helpful to Blister Your Horse

Kirsi Bertolini
Horse blistering is very controversial subject. Many people swear by it and some believe it is cruel and ineffective. Whatever the case is in your mind, the fact is that all types of blisters sell around the horse world for a good money.

WHAT is horse blistering? People who are not involved with horses most likely have no idea. And ye, I agree it might sound cruel and even be cruel, if not done with knowledge. When you blister a horse, you will cause an irritation to it's skin, and the blistered spot might "blow up" for quite some time. Why on earth would this be helpful? Frankly I do not know the answer to that question. What I do know is that blistering often helps a horse. I'm a firm believer of that. I also believe that if it is not done right and hard blister is used it can be very painful for the horse.

I've been involved with harness racing for decades and I've seen too many different blisters to mention by the name. Most common light blisters have iodine and they do not usually cause any heavy irritation. If you have never used blisters on your horse, you might want to start with these type of blisters. You can even wrap your horses legs after most iodine blisters, if you want to. Remember that each horse reacts different way for any leg paint you are using, so start carefully. You can always use more next day, if your horse did not react in any way. In my experience most chestnuts and greys have more sensitive skin than bay horses.

Cedar oil is very popular blister at least in the harness racing community. There is different ways to treat the horse after blistering with cedar oil. Some tell you to wash horses legs thoroughly the next day. I've never done that. The way I was told to use cedar oil is the "old school" way, and to me it seems to be working, so why mess with it? Make sure your horse is dry before using the cedar oil. Most tack shops sell wooden brushes to use with cedar oil, make sure you do not get any on your own skin.

I never use cedar oil for more than one place in the leg at the time. Most often I blister the front knees with it. This could be tricky to do if your horse is racing because those knees might "blow up" and get a thick scurf and your horse might be tender on the blister area for quite a while. I always blister knees in the front, never behind. After blistering I try not to get the area wet for about three days, if horse is jogged and needs a bath plastic wrap around the blistered area is a very handy trick.

You can also blister horses hocks on the sides with good results. While blistering I always follow with the brush to the direction of the hair, I never brush back and worth with cedar oil. And to me the good rule is that less is more, do not use too much, if you have never blistered the horse before, you can always add the next day but never take away!

Stifles might be the trickiest spot to blister on a horse, the skin around the stifle is very tender, but at the same time horses stifles benefit from the blister maybe the most. I rarely use cedar oil on the stifles, usually some iodine base blisters will work without over irritating the skin. I never blister the stifles from the inside, but I can use mild iodine blister all around the back end of the horse, hamstrings are often another sore area on the horse.

Another thing to remember while using cedar oil is that some horses legs do not "blow" right away, I've seen horses who look normal the next day, but have big legs the second day. So you might want to wait two days before repeating the blister, if the leg did not react as hoped.

I'm not too fond of blistering coronets with cedar oil, but I recommend everyone to try some iodine blister for their horses coronets in the front of the legs. Ankles are easy to blister, just go all the way around but try not to go all the way up, if there is a problem, the leg will react even if you just blister the lower portion.

After blistering with cedar oil I might give a horse a day off if the legs react a lot, second day it is back jogging like usual. In my experience even with blown legs sore horses usually jog better right away after being blistered, if you hit the right spot. Never try to take the scurf away before the new skin has fully grown underneath, otherwise you might just open a new wound and cause unneeded infection on the leg.

As always if you are not sure about using stronger blisters on your horse ask the advice from the people with more experience, helping your horse to stretch his legs with blister is a great tool to have, but do not overdo it by blistering everything at once with a heavier blister trying to find the problem. Not a good idea in my mind, go one spot at the time!

Published by Kirsi Bertolini

I am a mother of five great kids who likes to write and take photos. We also race standardbreds.  View profile

5 Comments

Post a Comment
  • FMB12/12/2010

    A well respected vet once told me he preferred the days of blister because the horse automatically also got the time off it needed. As opposed to today's method of stick them and drop them in the box.

  • FMB12/12/2010

    Like anything else it can be used or abused. Blistering is much preferable to injecting. I'ld rather paint than stick needles in a joint. A lot more horses raced until mandatory retirement age of 14 back in the days of blister than they do now in the day of needles.

  • Old Gary D12/11/2010

    Blistering a horse is infinitely less painful to the animal than the original injury. A blister simply changes the ph level of the skin, thereby increasing blood flow to the area, which allows the animal's body to heal naturally.

    I too have used many, many different blisters including Palmolive dishwashing detergent on stifles (far better than anything else I ever used, and way cheaper too!). Using any hot leg paint is effectively equivalent to a light blister. Many people confuse a little pain with abuse. The pain humans are put through by physical therapists dwarfs any possible discomfort a horse might feel from being blistered. Think of it more as a "good pain".

  • Kirsi Bertolini12/11/2010

    Ok those scar tissues were not caused by blister, there is no visible scars ever left from blistering a horse. At least I have never seen such a thing happening from the blister. I have heard that argument about thinking about blistering your own skin many times. Well I'm not a horse I don't eat hay and oats and grow coat all over my body. I'm not going to start this discussion because I know some people will never approve the blister and will always think it is cruel. They have that right. I myself am happy when I see a blistered horse being able to stretch his legs without stiffness once again.

  • MB12/4/2010

    I am disgusted that someone would encourage people to cause harm to their horses. "Done right" - you mean there's a RIGHT way to cause your horse pain? Really?

    I've ridden a thoroughbred who was blistered in his younger days. To see the thick bands of scar tissue around his ankles nearly made me cry. Nothing that can cause that much scar tissue could possibly "help". Think about when you get blisters on your own hands or feet and how painful that is - and then decide whether you really want to purposefully cause pain to an animal.

Displaying Comments

To comment, please sign in to your Yahoo! account, or sign up for a new account.