Some particles appear too bright So I was watching Blender Guru's videos on donut making in Blender and when it came to the sprinkles they showed up super bright on the rendering. I don't know what happened. In the image, you can see the spherical sprinkles are just fine but the rest aren't
It looks like your particles are actually emitting light. In order for this to happen, they either have an emission shader, or a principled shader in which the Emission value is not set to black. 

If the particles using an emission shader, simply change it to a principled shader and that should fix the problem. If they are using a principled shader, simply go to the Emission box and set it to black.