how to restore old brushes (synthetic)

[teal moon]

Hi everyone,
Can anyone help me with some of my oldest synthetic brushes?
Are they restorable, and how?

Thanks in advance.

The big black one is an old make up brush I used for dry brushing. This one is easy to replace.
The two on the right I used for metallics. They are in awful shape...

[thorny elbow]

Do you have brush soap?

[teal moon]

Yes, I have a piece of brush soap, but this alone don't seem to do the trick, in this cases.

[ornate shore]

5 and 6 (from left) may be you could try for drybrush also. Sometimes its very usefull take a small brush which help to be an extra accurucy with it.

Also i use old synthetic brushes for expiriments with mixing colors. Something like your number 2 and 3.

[teal moon]

Yes, this would be plan b. But how could I get them in a usable shape.
How do you people clean your brushes?

[jolly sable]

https://youtu.be/IcYRR3DEniU?si=nr9zTyS6NDKBdxlx

https://youtu.be/nxHqc_GtM48?si=bfA9NGnxB4GiKxpQ

Here u have two good videos to see and try.

[teal moon]

The vinegar helped a lot.

Number 3, 7 and 9 (l-r) are still in questionable shape, but with the rest, I think I can work.
Thanks