for me, it adds a little bit of thickness the first week or so then it wears off. I think it's just the plant coating that fluffs it up and makes it look thicker. I only have 2 coatings of henna though, and a couple of henna glosses..maybe if I kept hennaing to saturation it would have that thick look all the time (been meaning to test this on a strand of hair).
it has taken some wave out of my hair, but not completely.
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