It will boost curl, but it is also very drying and I don't really recommend it. I prefer using protein to boost my curls.
Will sea salt make curly hair curlier
I really wouldn't use it myself I have but I didn't like the result. I couldn't brush or detangle, my hair was as stiff as if I just sprayed it with instant freeze. I'd agree with the protein it fills in the damaged gaps of your cuticle (fills up the damaged cracks and splits in your hair shaft) but to much protein will ruin your hair never leave it in for more than a half hour. Hope I helped!!! :)