There is none. Anyone can use the Lice Trap Shampoo, you can even use it on children. Although have them in a comfortable sitting position, and remember to cover the entire top of the wet hair with separate “puffs” of mousse.
No it does not, the Shampoo has naturally occurring enzymes derived from organic sources such as proteinase. This is an enzyme that breaks the long chain-like molecules of proteins into shorter fragments (peptides) and eventually into their components.
Although in case of accidental ingestion, seek professional medical assistance and remember to always remain calm.