Original factory curls can be difficult to preserve. If they must be washed and conditioned, use cool water and be very gentle. If you can avoid shampooing them, dampen them with a spray bottle. They can be ruined by drenching them with water.
Use a comb to tame strays. Some can be smoothed with your fingers and curled by twisting in the direction of the natural curl. If they need more help, wrap them around a straw and secure with claw clips or bobby pins until dry.
Photos courtesy Lunamoth.
Re-Curling
Toy Makeover: My Little Pony hair recurling and body reshaping! 🌈✨
My Little Pony Hair Curling Experiment!
How to curl G1 My little Pony hair - different types and techniques
There are a variety tools for curling pony hair. The one's you choose will depend on the size of curls you want. Photos courtesy Cyberunicorn.
Q-tips - make small, tight curls
Re-Curling tutorial by Whippetluv:
Step 1... Frizzy haired pony
Repeat steps 3 and 4 several times.
Heavily applying conditioner and running a thin comb through the hair will straighten most minor frizz. I use Head's Up! conditioner for dolls. Any shampoo and conditioner you prefer is fine and those made for synthetic wigs are often great for ponies. I recommend unscented options due to concerns that fragrances may cause yellowing over time.
For worse frizz, wet the hair and liberally apply conditioner. Heat a flat iron on the low setting. Separate the hair into small sections and run it through the flat iron repeatedly until the frizz is fixed.
Do not use heat on color changing or perfume puff hair as it will melt.
How To De-Frizz My Little Pony Hair
Photos courtesy Truevampiress.
Most common in beddy-bye-eye babies and newborn twins, pony mohawks are where the hair sticks up instead of laying against the neck. To tame this, wet the pony' hair, pull it down around the neck, making certain it is smooth. Fold a piece of paper towel over a few times and wrap it tightly around the neck/hair. Secure it with tape or rubber bands. Let the pony sit until the hair is dry, then remove the paper towel.
Another method is to wrap a ziplock bag around the head, secure it tightly with a rubber band, and pour hot water over the head to set the shape of the hair.
You want this type of hair to be poofy, but be careful not to pull the hair out when combing as it's delicate. You'll likely lose some of it, which is ok. If it's only a little you won't be able to tell. Wash and condition their hair with the same shampoos and conditioners you use on your other ponies. Their hair is supposed to be soft, so use tons of conditioner and leave it in for longer periods of time if needed. I've gotten reports that carpet cleaner like Resolve Triple Oxi will help whiten dingy, grayed perfume puff hair.
When a pony's original hair is just too far gone, replacing their manes and tails can make a huge difference. Here are some color matching guides: AeraCura's Custom FAQs, The My Little Pony Hair Color Matching Guide, The Lavender Lagoon Rehairing and the Colour Matching Guide.
Proper Hair Length for My Little Pony
How to Rehair My Little Pony Manes – The Floss Method
My Little Pony - Rehairing by Wolfinlied
Lots of ponies were manufactured with what's known as "fading pink" hair. It's a shade of pink that easily fades when exposed to sunlight and may of these ponies now have white hair. It's easy to dye pony hair back to pink using Rit All Purpose Dye. This shade of pink was vibrant with a tinge of orange to it, you can see examples with MIP ponies such as this Lickety Split. To achieve this shade, many collectors mix a bit of orange or yellow dye in with the pink. Petal pink is what is commonly used. You can use either the liquid or powder formula.
Whitening toothpaste (paste, not gel) and Rit Rust Remover can all be used to remove tail rust. Scrubbing the rusty area with toothpaste and a stiff toothbrush is usually enough to clean it.
Replacement
Sulky brand tinsel works well as a replacement for the original and can be inserted the same as doing a re-hair. Fabric and craft stores often carry it and it can be bought online. Replacement Tinsel for My Little Pony
Straightening

The easiest way to straighten crinkled tinsel is the same as for de-frizzing hair. Wet the hair/tinsel and liberally apply conditioner. Then run small sections of the hair through a straightening iron set to low. Repeat as necessary until your tinsel is fixed. Photos courtesy StrawberryReef.
Other methods include repeatedly dipping the hair in hot water and combing it until de-frizzed. Some collectors fix frizz by wetting the hair, applying conditioner, then ironing it with a clothes iron set on low.
Here's a video showing the use of a clothes steamer to fix frizz.
Here are sites where you can purchase replacement hair and other supplies such as re-rooting tools:
Rehairing a my little pony By angellove
Cherry's Custom MLP Tutorials: Rehairing/ Rerooting
How to Rehair My Little Pony Tails - many collectors use a zip tie instead of a twisty tie depending on individual preference. I've also seen it suggested to use wool yarn to tie off tails, to prevent potential chemical reactions between different plastics.
Elish2 made a youtube video about styling Perfume Puff hair: Brushing and Styling a MLP Perfume Puff
Puff hair can be difficult to dye. Some solutions may be, a vinegar treatment, salt, or a dye fixative. You may also have to leave the hair in the dye for longer than would be needed for regular nylon pony hair.
To re-hair a perfume puff pony, collectors often use yarn or mohair.
. Crimping . Curls: Factory Curls, Re-Curling . Disintigration .
. Frizz . Mohawks . Perfume Puffs .
. Re-Hairing: Tutorials, Petite Ponies . Re-Pinking . Tail Rust .
. Tinsel: Replacement, Straightening . Washing & Conditioning .
Petite Ponies
Einhornbaby at the MLP Arena provides some instructions for re-hairing Petite Ponies: "Soften the glue with hot water, pull out the tail (careful, you don't want to pull the tail bow too!!) and make a new one where you cap the end that will go into the pony with some sticky tape. Then put some glue into the hole in the tailbow and carefully put it in. Its a pretty sensitive task since petites are small, but if you take your time it will look very nice afterwards."
You can use any shampoo and conditioner to wash and condition your pony's hair. Everyone seems to have their favorite. I use Twin Pines of Maine Heads Up! products on my own collection and lots of collectors also get good results with products for synthetic wigs.
Some ponies have gotten some really strange stuff in their hair over time. For more stubborn gunk, try washing the hair with Dawn dish soap or an OxiClean bath followed by shampoo and conditioner.
Add dye to hot water, test the color with a piece of white paper towel. If it's too dark, at more water, if too light, add more dye. Submerge the ponies hair for just a second and repeat until you achieve the desired color. You may need to work the dye into the base of the tail with a toothbrush or comb. As long as you don't leave the pony's body in contact with the dye for too long it won't pick up the color. However, you are just submerging the hair, not the entire body.
Dip the hair in an oxiclean bath to remove excess dye and rinse with cold water to set. Photos courtesy Aimee T.
It's usually the metal washer that rusts inside the pony's body, so most collectors choose to remove this. If needed, you can also remove the metal clamp using needle nose pliers. You can replace the washer with a zip tie.
Photos courtesy BabyIceCrystal.
To crimp pony hair, tie off sections of the hair into tiny braids and dip them in very hot water. Let them sit until mostly dry then unbraid the hair. It may still be damp. Let it sit until fully dry then style! Photos courtesy Aimee T.
Disintegration
Most common in G3's, this is when the hair falls apart with time. It's probably due to Hasbro using low-quality materials on these ponies that doesn't age well. Once this starts, you'll have to re-hair the pony as there's no way to fix or stop it.
