Here's the law:
http://www.chanrobles.com/republicacts/republicactno4653.htmlBut please note there are exceptions. One exception is
Sec. 105 (v) of RA 1937 - Food, clothing, house-building and sanitary-construction materials, and medical, surgical and other supplies for use in emergency relief work, when imported by or directly for the account of any victim, sufferer, refugee, survivor or any other person affected thereby, or by or for the account of any relief organization, not operated for profit, for distribution among the distressed individuals, whenever the President shall, by proclamation, declare an emergency to exist by reason of a state of war, pestilence, cholera, plague, famine, drought, typhoon, earthquake, fire, flood and similar conditions: Provided, That the importation free of duty of articles described in this herein subsection shall continue only during the existence of such emergency, or within such limits and subject to such conditions as the President may, by his proclamation, deem necessary to meet the emergency.
Consult ko lang po kayo--kasi meron na kaming mga used clothes dito sa Office na ipapadala na kaso ng tinanong namin ang Phil Embassy dito sa --bawal daw magpadala ng 2nd hand clothing sa Pinas under 
