Dangerous goods can be shipped if they are classified, packed, labelled and declared correctly. The rules: IATA DGR for air, IMDG Code for sea, ADR for road and RID for rail.
What we need: the safety data sheet (SDS), UN number, class, packing group, quantity per package and the packaging type.
Lithium batteries, perfumes, paints and aerosols are dangerous goods too. Tell us up front; a wrong declaration means rejected cargo and fines.