I love pony makeovers. I bought 5 G1 ponies yesterday at a thrift store myself and needless to say, they were a hot mess. I did an overall clean last night because I simply could not resist, but I will definitely need to do a more detailed clean. A lot of the ponies have really frizzy hair, Cha Cha particularly - seriously she looks like a poodle! I have read online about dipping their manes and tails into boiling water, but you have to be really careful! I have yet to experiment but it might be necessary for poor Cha Cha - or she'll just need new hair altogether; which that's another project in itself and I have no experience with rehairing. Take some before and after pictures! It's always fun to compare the differences! And congrats on your finds!