Pravana Keratin Fusion is "not" similar to the Brazilian Keratin Treatment/BKT.
Pravana Keratin Fusion is similar to Japanese Hair Straightening/TR.
Fusion Texture Control hair straightener does not list ingredients on its
container regarding the straightening system. However, I have now found
that Pravana Keratin Fusion contains Cysteamine Hydrochloride as the
straightening agent, which is a sister chemical to ammonium thioglycolate
The negative to Cysteamine is that it smells like cat urine in the hair if
not rinsed out and the smell persists.
Over the years, other hair straightening agents, such as ammonium bisulfate and
cyteamine hydrochloride have been used with only limited success. These
chemicals are not as popular with professional stylists because they do not give
as strong a curl/straightening or last as long as thioglycolic acid compounds.