JKS, Pravana, Bio Ionic

deliriadeliria Registered Users Posts: 35
I want to get a keratin treatment but I'm concerned about formaldehyde. According to the Oregon OSHA, the following have the lowest levels. Has anyone had experience with these? I'm not sure which one to try. Also, if I have very thick hair will I need extra product?

JKS Smoothing Treatment
Pravana Keratin Fusion Texture Control
Bio Ionic KeraSmooth

For some reason I also had Brocato Curl Interrupted in my notes, but I couldn't find a study to back it up.
2b

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