I would like to shave my LO's hair after full month.Will it be 3rd or 4th month after birth? And also will any barber can do or need to go for special salon?

Not too sure about this custom so I can't comment on that but I can recommend a really good place to get hair cuts for kids. It's called Scissors Paper Stone and there are a few outlets. They specialize in children's hair cuts and I've heard so many good reviews about them! Highly recommended by my friends. http://www.scissorspaperstone.com.sg