7 causes of hair damage and how to repair it

Hair damage is a prevalent concern affecting people of all hair types and ages. Understanding the scientific causes behind hair damage and learning how to repair it is key to maintaining healthy, vibrant hair. In this blog, we'll explore the 7 most common causes of hair damage, supported by research, and provide effective solutions on how to repair damaged hair.

Heat Styling

Excessive heat from styling tools like flat irons, curling wands, and blow dryers is a leading cause of hair damage. Research published in the International Journal of Cosmetic Science found that repeated exposure to high temperatures degrades the hair's protein structure, leading to dryness, breakage, and split ends (1).

Solution

Use heat protectants: A study demonstrated that heat protectant sprays significantly reduce the damage caused by styling tools (2).

Reduce heat settings: Opt for lower temperature settings and limit heat styling to a few times a week.

Air dry: Let your hair air dry whenever possible instead of using a blow dryer.

Chemical Treatments

Chemical treatments like coloring, perming, and relaxing can weaken hair strands by breaking down their natural structure. A study in the Journal of Cosmetic Dermatology highlights that repeated chemical treatments can cause protein loss, leading to brittle, damaged hair (3).

Solution

Opt for gentle alternatives: Choose ammonia-free hair dyes or try natural coloring methods.

Deep conditioning treatments: A clinical study showed that deep conditioning can significantly improve the moisture content and elasticity of chemically treated hair (4).

Professional treatments: Salon treatments such as Olaplex, which rebuilds broken bonds in the hair, have been scientifically proven to repair chemically damaged hair.

Over-Washing

Washing your hair too frequently can strip it of its natural oils, leading to dryness and damage. According to research, frequent washing with harsh shampoos can disrupt the scalp's natural balance, leading to hair breakage (5).

Solution

Wash less frequently: Aim to wash your hair 2-3 times a week to retain natural oils.

Use sulfate-free shampoos: Sulfate-free shampoos are gentler on the hair and scalp, preventing excessive dryness.

Dry shampoo: Use dry shampoo between washes to keep your hair fresh without stripping its natural moisture.

Environmental Factors

Exposure to harsh environmental elements such as sun, wind, and pollution can cause significant damage to your hair. A study found that UV radiation can break down the protein structure of hair, while pollution can lead to oxidative stress, causing tangling and brittleness (6).

 

Solution

Wear protective styles: Buns, braids, or scarves can protect your hair from environmental damage.

Use leave-in conditioners: Products with UV protection can shield your hair from sun damage.

Rinse regularly: Rinse your hair with water after exposure to pollution to remove harmful particles.

Improper Brushing

Using the wrong brush or brushing your hair too aggressively can lead to breakage and split ends. Research in the Journal of the American Academy of Dermatology indicates that wet hair is particularly vulnerable to damage during brushing (7).

Solution

Use a wide-tooth comb: Especially on wet hair, to minimize breakage.

Brush gently: Start from the ends and work your way up to avoid pulling and breaking hair.

Detangle regularly: Keep your hair free of tangles to reduce the risk of damage.


Nutritional Deficiencies

A lack of essential nutrients, particularly vitamins and minerals like biotin, iron, and zinc, can lead to weak and damaged hair. A study found that deficiencies in these nutrients are directly linked to hair thinning and breakage (8).

Solution

Balanced diet: Ensure you are eating a diet rich in vitamins, minerals, and proteins.

Supplements: Consider taking supplements specifically designed for hair health.

Stay hydrated: Drink plenty of water to keep your hair hydrated from the inside out.

Stress

Chronic stress can lead to hair damage and even hair loss. Research from the American Academy of Dermatology shows that stress affects the hair growth cycle, pushing more hair follicles into the shedding phase (9).

Solution

Stress management techniques: Practices like yoga, meditation, and deep breathing can help reduce stress levels.

Scalp massages: Regular scalp massages can stimulate blood flow and promote healthier hair growth.

How to Repair Damaged Hair: Best Treatments and Home Remedies

Wondering how to treat damaged hair? Repairing damaged hair requires a combination of professional damaged hair treatments, home remedies, and lifestyle changes. Here are some of the best ways to repair and treat damaged hair:

Deep Conditioning Treatments: Weekly deep conditioning treatments can restore moisture and repair damaged hair. A study found that deep conditioners containing keratin, argan oil, or shea butter significantly improve hair health (10).

Hair Masks: Use hair masks with ingredients like honey, coconut oil, and avocado. According to a study, these natural ingredients deeply nourish and repair damaged hair.

Trimming: Regular trims are essential to remove split ends and prevent further damage (11). Research suggests that trimming every 6-8 weeks can maintain hair health.

Scalp Care: A healthy scalp is the foundation for healthy hair. Use gentle, nourishing shampoos and exfoliate your scalp to remove buildup and stimulate growth.

Avoid Heat Styling: Give your hair a break from heat styling tools to allow it to recover and repair.

Use Silk or Satin Pillowcases: Sleeping on silk or satin pillowcases reduces friction, helping to prevent breakage and damage.

Balanced Diet and Supplements: Ensure your diet is rich in essential nutrients and consider supplements like biotin or collagen for additional support.
Home Remedies for Damaged Hair
If you're looking for natural ways to repair damaged hair, try these home remedies:

Coconut Oil: Apply warm coconut oil to your hair and scalp, leave it on overnight, and wash it out in the morning. A study published in the Journal of Cosmetic Science found that coconut oil can penetrate the hair shaft and reduce protein loss (12).

Aloe Vera: Aloe vera gel can be applied directly to the hair to soothe and repair damaged strands. It also adds shine and smoothness to the hair, as highlighted in a study in the Journal of Chemical and Pharmaceutical Research (13).

Egg Mask: Mix an egg with a tablespoon of olive oil and apply it to your hair. Leave it on for 30 minutes before washing it out. This protein-rich mask can strengthen and repair damaged hair, as supported by research in the Journal of Trichology.

Avocado Mask: Mash an avocado and mix it with honey or yogurt. Apply it to your hair for deep conditioning and nourishment (14).

 

Conclusion

Hair damage is a common issue, but with the right care and treatments, you can repair and restore your hair's health and vitality. By understanding the scientifically-backed causes of hair damage and implementing these hair damage solution(s), you can achieve stronger, healthier hair. Remember, the best treatment for damaged hair is prevention, so incorporate these tips into your hair care routine to keep your locks looking their best.


Whether you're dealing with heat damage, chemical damage, or any other type of hair damage, these research-backed solutions on how to repair damaged hair will help you restore your hair to its former glory.

FAQs

1. How do I repair my damaged hair?

To repair your damaged hair, focus on types of hair damage, deep conditioning treatments, reduce heat styling, and use products specifically designed for your type of hair damage.

2. How do I stop hair damage?

To stop hair damage, avoid excessive heat, chemical treatments, and ensure your hair is properly hydrated and protected from environmental factors.

3. How to repair damaged hair naturally?

Repair damaged hair naturally by using coconut oil, aloe vera, and avoiding harsh chemicals, while opting for gentle, nourishing products.

4. Can damaged hair grow again?

Yes, damaged hair can grow again with proper care, regular trims, and by addressing the underlying causes of hair damage.

5. How to get hair healthy again?

To get your hair healthy again, follow a consistent hair care routine, nourish your hair from the inside out, and focus on how to fix damaged hair with targeted treatments.

Back to blog