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Osis+ Flatliner



6.76 oz Item 2309220

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OSIS+ Flatliner is a heat protection spray with 230C/450F heat protection + humidity protection. Non-sticky, strong control with even results and a long-lasting effect. Reduces hair breakage.
Apply to damp hair before blow-drying or to dry hair prior to the use of hot tools.

Precautions: Flammable. Do not spray in eyes.
Aqua (Water, Eau), Alcohol denat., Propylene Glycol, Polyurethane-48, PEG-60 Hydrogenated Castor Oil, Sodium Benzoate, Cetyl Ethylhexanoate, Bis-Isobutyl PEG/PPG-20/35/Amodimethicone Copolymer, Lactic Acid, Polysorbate 80, Butylene Glycol, Gluconolactone, Hydrolyzed Keratin.


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Product Reviews


by PowerReviews

(based on 1 review)

Reviewed by 1 customer

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It Works!


from So Cal

About Me Minimalist

Verified Buyer


  • Controls Frizz
  • Easy To Use
  • Lightweight
  • Non-Greasy
  • Strong Hold


    Best Uses

    • Curly Hair
    • Daily Use
    • Thinner Hair

    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.

    • Hair Type:
    • Very Curly Hair

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