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Reviewed by 1 customer
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Comments about Osis+ Flatliner:
I have very fine curly hair at a medium length & is colored. I found with this product that a little goes a long way. Too much of it will leave my hair looking weighed down. I lightly spray it on while my hair is quite damp & then blow dry it straight using a round brush. My hair is left straight, not flat, with lots of body. On humid days my natural curl does manage to still frizz a bit, but this product still helps manage the frizz; I use a flat iron on stubborn spots & a humidity control hair spray for a little extra help maintaining the straight look. It does not have an odor & leaves a nice sheen. One bottle lasted me 5-6 weeks with use 2-3 times per week. I liked it enough to buy it again.