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Schwarzkopf OSIS Flatliner Flattening Iron Serum 6.8oz

Schwarzkopf OSIS Flatliner Flattening Iron Serum 6.8oz


4.2 out of 5 stars
  • 5 Stars43%
  • 4 Stars37%
  • 3 Stars17%
  • 2 Stars3%
  • 1 Star0%
4.20 / 5 based on 35 Reviews

Product Description

Steamroll your curls! Osis Flatliner, get things straight with this heat resistant iron serum. Thanks to the unique formulation, Osis Flatliner provides ultra flat styles with absolute heat protection up to 392 F. + safe straightening + humidity protector + smoothes + heat resistant Type: Styling Products see more...

Top Questions See all 2 Q&A

Schwarzkopf OSIS Flatliner Flattening Iron Serum 6.8oz
Schwarzkopf OSIS Flatliner Flattening Iron Serum 6.8oz
Reviews (35)
Q&A (2)
Leave a Review
Jazmin N.
Johnstown, PA
156 reviews
Beauty Junkie Expert Level 2
This is one of the better serums I've used. I bought it at CVS on a whim when I was looking for something to protect my hair a little bit. I have color treated dry hair but with its natural waves I use my flat iron almost daily. This works really great, I noticed less split ends and it smells really great. Its a good price so I would probably buy it again.
Carmela H.
Lawton, MI
170 reviews
One of my more favorite straightening serums I have ever used. I have bought this product a couple of times now and that says a lot from me, I usually use something and then change it up the next time I have to buy some more. This serum really helps straighten my thick wavy hair and I feel like it really helps protect my hair from the heat at the same time. My hair also had a nice shine to it that just made my hair look so beautiful and healthy!
Lori A.
Brooklyn, NY
136 reviews
Beauty Junkie Expert Level 2
This product smells fantastic. It protects my hair from my flat iron and prevents split and fried ends. It is priced mid range compared to others. I have brown highlighted hair that is naturally dry and frizzy so this is a must. This product is perfect!
Aleina B.
5 reviews
I adore this stuff. it does the job, and helps tame my frizzy hair before ironing. I don't appreciate the way it sprays out though. Instead of a nice mist to spray around the whole head, it shoots out in a stream and builds up too much product in one spot. It's a great product, just use with caution.
Haley S.
Killeen, Tx
9 reviews
LOVE LOVE LOVE! Leaves your hair sleek and silky! Kind of sticky and contributes to a bit of build up in your hair but overall it's a great product and does what it's supposed to do!
Amanda T.
Allentown, PA
49 reviews
Beauty Junkie Expert Level 3
This product works on all hair types and its not pricey at all! I use it whenever my clients want their hair as smooth and straight as possible and they always love the way it makes their hair feel! I'd recommend it
Katie M.
Springfield , OR
7 reviews
Use this every time I straighten my hair. Makes it very lightweight, shiny, and soft. No split ends have come since I've started using it! Will definitely purchase again
Franciene F.
Denver, CO
2 reviews
I always use this product before dry my hair because protect and give life to my hair. Once you start to use, you will always use because is one of the best.
Lorena G.
39 reviews
Beauty Junkie Expert Level 4
This product is all right. It does the job but it doesn't have any added benefits. Great for heat stylinh but there's better out there for a better value.
Paisley P.
Haleyville, AL
9 reviews
This serum is definitely in my top five favorites for flat iron protection and smoothing. It's reasonably priced and smells wonderful as well!!!
Lucia R.
43 reviews
I've read in the reviews that it's better if you don't put too much but the product doesn't go out as a mist, so, which would be the best way/technique to apply this one? Aim to the roof so it would be like a shower when it comes down? Apply it first in the hands and then on the hair?
Yilibeth V.
Miami, FL
18 reviews
What about this product...this product really works?

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