Understanding hair damage
When we talk about damaged hair, we’re talking about more than just split ends. We’re talking about dull, frizzy locks that are difficult to manage. Before answering the question, how do I repair my damaged hair? let’s make sure we have a basic understanding of what each strand of hair is made up of.
Each strand of hair consists of three layers. Let’s take a look:
1. Cuticle (the outer layer)
2. Cortex (the middle layer)
3. Medulla (the innermost layer)

What causes damaged hair?
Let us count the ways… Hair damage can result from a myriad of factors. Aggressors or stressors break down the hair’s keratin, or natural protein structure, leading to weak, brittle and dull hair. Before exploring damaged hair treatments, we’ll get into some of the causes.
Some of the most common culprits of hair damage include:
Chemical processing like dyeing or bleaching
Dyeing or bleaching hair (especially at home) can deplete your hair’s hydration, turning smooth, healthy hair into coarse, damaged hair. Bleaching in particular dissolves the melanin, or pigment, in our hair, leaving the hair dry, porous and fragile. It can even permanently change and weaken your hair structure overall.
Harsh environmental or external factors
Harmful UV rays from too much sun exposure can lead to brittle hair that’s more prone to breakage. Swimming in chlorinated water can also strip away your hair’s moisture (not to mention turn your mane green), leaving it coarse and crunchy.
Overuse of heating tools
Styling with excessive heat, whether with a hair dryer, straight iron or curling iron, can effectively “cook” our hair, leading to raised cuticles and more porous hair. This leads to hair that is more susceptible to damage.
This is not an exhaustive list of all causes of hair damage, but you can use it as a starting point for getting at the root cause of the damage. If you’re asking yourself, how do I repair damaged hair? Keep reading.
How do I repair damaged hair?
Now that you’ve assessed the damage, where should you begin? Making a full transformation from dull to vibrant isn’t always an easy path. Some cases of extremely damaged hair can’t quite be reversed. However, with proper hair care and a little TLC, you can begin to restore your hair from the outside in and get on your way to recovering your healthy, happy mane.
Start again: Cut your hair
If the damage is really deep, you may simply want to cut your hair, and start again. Head to a stylist you trust and don’t shy away from a major cut. Then you basically get to start from a clean slate! That’s how to fix extremely damaged hair. Be sure to establish a healthy, nourishing routine with your new style.
Adjust your routine: Less is more
When it comes to processing, like bleach or dye, we say, go to a salon. These processes achieve the best results when left to professionals, who know which products to use to minimize damage and maximize effect. Also, consider less frequent treatments.
Turn down the heat: Use protection
If you do use heat styling on your hair, we suggest a number of things to minimize damage. First, let your hair air dry most of the way first. This reduces the necessary exposure time to heat. Then, use lower temperatures when heat styling your hair so you avoid scorching or cooking your strands. If you’re using a hair dryer, you can also use it from a little farther away, and keep it moving so you’re not heat-stressing certain parts of your hair.
Nourish your hair: Targeted treatments
When it comes to the best treatments for damaged hair, look for specially-targeted, salon-quality products to support your damaged hair. You want effective formulations that focus on hydration and protection. The Absolut Repair Molecular routine by L’Oréal Professionnel is a full damaged hair treatment routine, which can repair 2 years of damage in a single application.* The full damaged hair treatment routine works to rebuild the molecular structure of the hair, penetrating the hair fibers to restore strength, elasticity and movement.

Your questions & our answers about damaged hair.
What is damaged hair?
Damaged hair means hair that is dull, frizzy and difficult to manage. It’s more than just split ends.
What causes damaged hair?
There can be many causes of damaged hair, including: harsh bleach or dye, too much UV exposure, and excessive heat styling.
Do perms damage your hair?
Perms can indeed damage your hair. They involve a chemical process that breaks down the hair’s natural structure, making it more susceptible to dryness and breakage. Some formulas may be less harsh than others.
How do I repair damaged hair?
Some steps to repairing damaged hair include figuring out the cause of the damage and adjusting your hair care or styling routine accordingly. Seek out professionals for bleaching or dyeing; protect your hair from the sun; use less heat; and use products specifically intended as damaged hair treatments.How to fix extremely damaged hair?
For extremely damaged hair, you might want to start with a serious hair cut and proceed with patience and care. Be sure to prevent new damage as your hair grows in, using processes and products that are more gentle and nourishing.
For profound nourishment and structural repair, integrate the Absolut Repair Molecular range, including the new oil, into your routine to rebuild molecular bonds and restore strength and vitality to your hair.How do I repair damaged hair from bleaching?
When it comes to repairing damage from bleaching: consider bleaching less frequently or maybe stopping the practice; protect your hair from the sun and other damaging activities like exposure to chlorine; and use products that nourish and condition.What is the best hair treatment for damaged hair?
The best hair treatment for damaged hair will be salon-grade, with effective ingredients that work on the molecular level.
Get inspired for your future Absolut Repair Molecular haircare experience.
To complete this transformative routine, the new Absolut Repair Molecular Oil emerges as the essential final step. This innovative, lightweight oil from L'Oréal Professionnel's Absolut Repair Molecular range is specifically formulated to seal in the profound repairing benefits delivered by the rest of the Absolut Repair Molecular Franchise. It creates a protective shield over the newly strengthened hair, guarding against environmental aggressors and preventing future damage, while ensuring the molecular repair is sustained. Beyond its protective qualities, the Absolut Repair Molecular Oil significantly enhances hair's overall appearance, imparting incredible softness, brilliant shine, and improved manageability without any heavy residue. It works in perfect harmony with the other Absolut Repair Molecular products to lock in nourishment and leave your hair feeling incredibly healthy, smooth, and radiantly revitalized.
To complete this transformative routine, the new Absolut Repair Molecular Oil emerges as the essential final step. This innovative, lightweight oil from L'Oréal Professionnel's Absolut Repair Molecular range is specifically formulated to seal in the profound repairing benefits delivered by the rest of the Absolut Repair Molecular Franchise. It creates a protective shield over the newly strengthened hair, guarding against environmental aggressors and preventing future damage, while ensuring the molecular repair is sustained. Beyond its protective qualities, the Absolut Repair Molecular Oil significantly enhances hair's overall appearance, imparting incredible softness, brilliant shine, and improved manageability without any heavy residue. It works in perfect harmony with the other Absolut Repair Molecular products to lock in nourishment and leave your hair feeling incredibly healthy, smooth, and radiantly revitalized.
