It can, but it depends on the design of the flash hider. For example, a flash hider that is effective at redirecting expelled gases upwards will generally reduce recoil more than one that is not. However, there are many other factors to consider when measuring recoil, such as the weight and placement of the firearm’s components.
In general, a flash hider should help to minimize muzzle climb (the tendency for the barrel of a gun to rise during firing) and thereby make it easier to keep your sights on target for consecutive shots. This can be especially helpful in situations where follow-up shots are necessary, such as in self-defense or hunting scenarios.