On the other hand, "thio-free" perms use an ingredient (amino acid) called
cysteamine. Cysteamine also breaks down the disulfide bonds in your hair. This
chemical doesn't have the strong odor often associated with thio but it isn't as
effective in producing permanent waves as thio perms (which also means less
Does "thio-free" mean damage free?
Unfortunately, that is
not the case. While
cysteamine-based perms are less smelly and less damaging, that certainly doesn't
mean no smell or no damage. This ingredient is still chemically changing
your hair, which is a damaging process. Cysteamine doesn't work quite as well
as thio which could be a good or bad thing depending on how you look at it! If
you want a slightly looser wave that doesn't last as long as traditional perming
then "thio-free" (or cysteamine) perms are worth a try.
The Pravana Keratin Fusion is a nice system. I use this product. HOWEVER it
cannot be compared to a Keratin Treatment. Pravana is a chemical straightener
that permanently alters the internal bonds of the hair. The Brazilian Keratin
Treatment is an external product that does not alter the bonds.
treatments all have a place in the straightening world, including the Japanese
straightening. But they are each quite different in many ways from each other
and serve a different purpose.
The key is to find a hair
straightening specialist who is proficient in all of the choices available. One
who understands all the chemistry involved. They will help to guide you to the
best treatment for your individual hair type and needs.