Yeah he has a protective aura as one of his powers to protect him from friction and he heals fast but not like wolverine just a broken bone would heal in minutes not weeks. After mark waid that got retconed to be the speedforce but it works the same. Also wally had a guilt induced mental block that reduced his connection to the speedforce due to Barry’s death. Once he worked through that he ended up faster and had better control than even Barry. As Barry controls the speedforce with his mind. Wally controls it with his heart.