Airline Carry On Rules

Are we authorised to put your shampoo, conditioner, soap, et cetera, in my checked bag? we know the 3-1-1 order as distant as lift on, though does this request to checked bags as well? TSA and US Airways’ websites do not answer these questions, so greatfully site where we get your information. we would cite not to only get the “yes, we have been allowed” answers, please. Specific sites or first-hand believe with this airline is most appropriate =)
Thanks!