Section 06 Products of the chemical or allied industries 33 Essential oils and resinoids; perfumery, cosmetic or toilet preparations 33 05 Preparations for use on the hair 33 05 20 Preparations for permanent waving or straightening 33 05 20 00 Preparations for permanent waving or straightening Commodity Code Description 33 05 20 00 000 Preparations for permanent waving or straightening