The smell freaked me out at first...especially the Argan Oil one. The Sweet Almond smells wonderful, but I do not like the smell of the Olive Oil formula. I have grown to love the smell of the Argan Oil formula...can't really explain why. The smell lasts in my hair while my hair is wet (overnight), but after it's dry there is no scent.
All of the formulas seem to be the same ingredients-wise, except for the distinctive active, (i.e. Argan, Jojoba, Almond, etc.), but all must have divergent percentages/ratios of ingredients, because they are very
different in the way they feel and perform.
The wheat protein doesn't seem to be bothering me at all. Maybe my hair is in a stage where it needs bits of added protein. I'm still not about to do any heavy duty deep protein treatments any time soon, but my hair feels thick and it seems to be growing really fast lately.
Sally's has 12 oz bottles and some "sample" sizes, but us curlies would need about 46 of those samples for one wash.