Keratin vs Cysteine Hair straightening treatment, Pros and Cons?

Date : 31 Jan 2021

There are two types of treatments by which one can get straight hairs, they are as follows:

  1. Cysteine Straightening Treatment, and
  2. Keratin Straightening Treatment


What is Cysteine straightening treatment?

It uses a non-essential amino acid found in keratin to straighten and strengthen your hair. If you have tight curls, the components in this hair treatment relax your hair without adding natural chemicals like formaldehyde.

Cysteine is a hair protein that interacts with the other proteins in your hair, helps to straighten. By forming a protective barrier around your hair, the protein guarantees that it is not readily damaged.


The technique begins with a thorough hair cleansing, which is necessary for greater Cysteine penetration. Your hair will next be treated with the cysteine combination. Except for the roots, it will completely cover your hair. This is by reason of cysteine in the hair roots can induce hair loss. The hair will be wrapped in plastic wrap and left on for 45 minutes after the application.

Heat will be administered to your hair to activate the cysteine complex once it is well set. Extra nourishment will be provided by shampoo and conditioner, ensuring that the hair seems healthy. When the hair dries, it will not only be straight, but silky and lustrous as well.


What is Keratin straightening treatment?

A keratin treatment is a hair smoothing and straightening procedure. It's a sort of protein that can be found in your skin, hair, and nails naturally. It increases the amount of keratin in your hair, which can help eliminate frizz, boost shine, and strengthen it. It also makes your hair straighter if you have curly or wavy hair.


  • Shampoo your hair

For added ingredient benefits, wash hair with an excellent keratin shampoo. Wash your hair twice if you have straight, and at least one more if you have curly hair.

  • Massage

Towel dry hair carefully, but leave some moisture in it so the product may absorb freely. Then, gently massage your hair with the product.

  • Leave it for 30 mins.

Comb your hair lightly with a wide-tooth comb while the product is still on your hair. Allow 30 minutes for the treatment to sit on your hair.

  • Rinse your hairs

Rinse thoroughly to make sure there’s no product build-up left on your hair as this may cause dandruff.








·         Formaldehyde and
·        Harsh Chemicals

Contains harmful chemicals

Does not contain any harmful chemicals

·         Safety

Not safe to use

Safe to use

·         Places to get treatment


Both Salons and Home

·         Longevity

6 Months

3 Months

·         Cost

Not expensive

Relatively expensive



Formaldehyde, a cancer-causing substance, is used in a keratin treatment. As a result, pregnant women, children, and anyone with sensitive skin should avoid this treatment.

Whereas, Cysteine treatment can be done at home it is relatively cheaper, with no harsh chemicals, making it safe for pregnant women and children over the age of 12.

Keratin vs Cysteine Hair straightening treatment, Pros and  Cons?