Quite a few - though just like lemon juice and vinegar, the majority of natural and aritifical acids are not harmful.
Anyway, some of the common ones can include:-
Methyl benzoic acid
Propionic acid
Salicylic acid
Glycolic acid
Undecylenic acid
Some of them (Salicyclic for example) are either very mild or harmless, others like glycolic must be carefully controlled as this is also the acid that is used for facial peels.
The list above is not exhaustive as many fragrances are effectively acid based as are some colourants.
purfume machines.
Purfume is an acid because it doesnt usually foam up when in contact with water. Also, is you put purfume on sensitive skin, it starts to sting. So if it was a base ti would be a very strong one!
The name of Justin Bieber's purfume is "SomeDay"
Purfume can effect a plant by poisening it. Lets say you spray the purfume on the plant. The plant will drink it like it does water. The purfume will eventually poisen the plant.
she doesn't even have a purfume- at least not in Ireland and UK... does that help...
as a purfume
you get a lighter and a purfume botle then get the purfume botle and the flame then you have a home made flamethrower
nice thingss
purfume
purfume farting
Granny perfume
you can (buy) it at dillards