How to Chemically Straighten Hair at Home

Updated on March 6, 2016

Want straight hair without the fuss and the frequent visits to the salon? I have found online Keratin products that work effectively to straighten my frizzy hair for 3-4 months at a fraction of the salon costs.

My hair is very thick and frizzy straight out of the shower. Over the years, I have learned to keep it short and pulled back into a ponytail to keep the frizziness away. Until recently I started straightening my hair with an iron. It definitely improved my appearance, but takes away precious minutes in the morning. I am not a morning person and every minute counts!

Thankfully, I have found this home treatment that is a fraction of the cost of permanent straightening offered at salons. It is also very simple.

Recommended Product

The most effective at home keratin I have found is a product called Coppola Keratin Complex.

  • It comes in an 8 oz bottle and will last at least 8 treatments. At under $100 per bottle, that equates to a little over $10 a treatment! This definitely beats the typical $200 -$400 salon charges.
  • It is available for purchase online for anyone (not just salon owners).


  1. First, thoroughly shampoo your hair twice, wash it, and dry it.
  2. Divide your hair into small sections and apply keratin with gloves on. Comb it evenly through hair. (Note: Make sure you are in a well ventilated area. There will be strong fumes. Place a towel under hair to keep clothing from getting stained. Also, please wear gloves!)
  3. Make sure that entire head is well coated. Now, let it sit for 30 minutes.
  4. Dry hair with blowdryer after the 30 minute soak-in.
  5. Run a straightener through each strand at least three times. This will lock the product in for longer lasting results.
  6. Keep keratin in hair for 72 hours without washing.
  7. Straighten your hair several times during the 72 hours to help penetrate the product within each strand.


  • Also keep from tying your hair back or placing it in ponytail for the next 72 hours.
  • Use only sulfate-free shampoo and conditioner here on out for longer lasting results.

Where to Buy

There are several manufacturers that sell keratin online. I have had good success with both Global and Coppola. Amazon and Ebay are good sites to check for competitive pricing.

How It Works

There are four bonds in your hair:

  • peptide
  • disulphide
  • salt
  • hydrogen

It is the disulphide bonds that are altered when you heat your hair with a straight iron or when applying a chemical straightening agent such as keratin.

How Long Does It Last?

You can expect your hair to remain fairly smooth and straight for about 3 to 4 months. Don't be discouraged if you still have to pull out your straightening iron to smooth out from time to time.

Good luck!

Questions & Answers


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      • profile image

        Bob 7 months ago

        DO NOT do anything in this article, especially repeated applications. Go to a professional, home stuff ... you could DIE

      • profile image

        Jaleesa 11 months ago

        When you are straightening your hair can you use heat protectant?

      • profile image

        Alline Rufino 20 months ago

        Thanks for sharing this information with us.

        I'm a little bit confused. I found a lot of products and I don't know witch one is the correct one. Can you share a photo from the product?

      • profile image

        Ella 23 months ago

        Can you go swimming with the treatment or will swimming mess it up?

      • profile image

        CurlyHair101 2 years ago

        I have very curly and frizzy hair. I have always straightened my hair with a flat iron and I hate burning my hair, especially in the summertime I love to swim but do to the water my straight hair doesn't last. My question is will the Keratin treatment work for very curly hair? Thank you in advance for anyone who answers my question. :)

      • profile image

        Monica 2 years ago

        Do you think you could put a picture up of the products? I just want to know which one it is! There's so many! Thanks in advance!

      • harmony155 profile image

        harmony155 4 years ago from Atlanta, Georgia

        Healthylife2: It's amazing what you can find on amazon! Some products will advertise that they are formaldehyde-free but that is a false claim because the formaldehyde is the key ingredient for straightening.

      • healthylife2 profile image

        Healthy Life 4 years ago from Connecticut, USA

        I heard Coppola is the best and didn't realize you could buy it online. I used to do the Japanese straightening but that causes so much damage over time. I look for chemical free alternatives now but there really aren't any for removing the frizz.

      • Pinkchic18 profile image

        Sarah Carlsley 5 years ago from Minnesota

        I bought the keratin, just looking for tips on how to use it :) Thanks!

      • Alexandria Joy profile image

        Alexandria Taberski 5 years ago from Loveland, CO

        Seems to create a really great glossy look. I wonder if it's comparable to an Asian straight perm?

      • wrenfrost56 profile image

        wrenfrost56 5 years ago from U.K.

        I straaighten my hair at home but I have not used keratin before, thanks for the tip. :)

      • naimishika profile image

        Venugopaal 5 years ago from India

        now I will definitely tell my wife to straighten her hair following your article. Thanks for sharing.

      • harmony155 profile image

        harmony155 5 years ago from Atlanta, Georgia

        Another good product is Coppola Keratin Treatment. You can find this on Also try amazon or eBay for competitive keratin products. I hope this helps!

      • harmony155 profile image

        harmony155 5 years ago from Atlanta, Georgia

        You can purchase Global Keratin Treatment on many websites. They do not sell this at beauty stores or drug stores,

        Check out

      • harmony155 profile image

        harmony155 5 years ago from Atlanta, Georgia

        K Kiss: Sorry for not being more clear, but yes, run your hair straightener though each strand at least 3 times ( to activate the keratin). This can be somewhat tedious. Just an fyi: I like to continue to straighten my hair daily for the next 72 hours before washing to really set the keratin in.

      • K Kiss profile image

        K Kiss 5 years ago from Newcastle upon Tyne, UK

        Hi this seems like a promising adventure I could take. However, had a question. What do you mean by "Straighten hair 3 times"? Do you mean iron my hair with hair straightner while the hair is covered with kerating?

        Other than buying online, where can I get keratin? in drug stores or beauty product stores?

        Thanks. Your DIY hub are amazing