Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Fiat(noun) an authoritative command or order to do something; an effectual decree. 2  Fiat(noun) a warrant of a judge for certain processes. 3  Fiat(noun) an authority for certain proceedings given by the Lord Chancellor's signature.
HEAD LICE PRODUCTS. Our ClearLice lice treatment products will naturally get rid of lice from your head and home (clothing, bedding, furniture, carpets, and car interior) in just one day. ClearLice lice prevention products will help prevent lice from infesting your life.
High quality nit comb â Seriously, this is important. Itâs the only thing that will completely get rid of lice AND the nits. Melaleuca Alternifolia (Tea Tree oil) â Not only will this repel lice, it can also KILL them. Coconut oil or conditioner.