recent or old wounds, whether scratchy or not
Damage (wounds, abrasions, etc.) is generally easy to treat with products available on the market and/or recommended by your vet.
On the other hand, it's less easy to achieve rapid healing, and even less easy for the coat to regrow its original color.
To achieve this, you'll need to adhere to a basic, tried-and-tested principle: cleansing with clear water, which is quite sufficient if the wound is fresh and uninfected. The skin will be less stressed and healing accelerated.
Reactivating hair regrowth in an old wound that has ended up as "cardboard" can be envisaged. You just need to be patient and hope that the hair bulbs are still there.
CUTENE makes this cell regeneration possible. Applied once a day, it can kick-start the process. Duration varies from 10 days to...2 months. It all depends on the condition of the skin. If no down appears after 2 months, stop and wait for the next winter coat. It may still be triggered.