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Hair Damage

Updated: Feb 22, 2022

Apart from the latest trend in hairstyles and hair products, hair damage and concerns surrounding it are also some of the things that we regularly talk about. I mean, what’s the point of having certain haircuts and using innovative hair products if the tresses are damaged? It’s highly recommended for you to be informed and have some knowledge about hair damage, so you’ll be able to take preventative action instead of leaving them until it’s too late.

Without further ado, let’s get down to it and read through the comprehensive guide we compiled about hair damages and ways to remedy it.

Starting from the basic is to know the common signs how damaged hair should look like - this will help a lot in narrowing down the factors that cause the damage in the first place, finding the right treatment fit for the specific issue (instead of making it worse), as well as taking steps to undo the damages and prevent it from happening again.

Hair Damage - Types And Causes

Split Ends

Is one of the most common hair damage issues and honestly, it can be frustrating. Split ends doesn’t mean the hair is only split at the end - the exposed part of the hair makes the whole hair structure vulnerable to tangled hair, rough texture, and frizz. The issue develops rather gradually and by the time it’s obvious you might need extensive treatment for it.

Damaged split ends.

Overstressed Hair

Apart from the stress that can cause noticeable changes to the body, it can do so to your hair as well. In fact, it can be drastic.

Stress (both chronic or acute) can cause various and unfavorable changes in texture, color, and increase in the hair loss rate.

As you’re in a stressful period, the body will switch into ‘survival mode’ and send nutrients from only to the most vital components of the body. Sadly, our hair is one of the last to receive the nutrients. Coupled with the fact that we either eat less or opt for unhealthy food choices when we’re stressed, this adds burden to the hair and speeds up damage effects to the tresses.

Damage Due to the Sun and Heat Treatments

Overexposure of hair to the sun or various heat treatments makes it dull-looking, rough, dry, and discolored and it weakens the tresses.

This damage is unavoidable (I mean, you can’t stay inside and avoid sun forever) but if it’s obvious your hair gets damaged from sun exposure or the treatments. You’ll be able to narrow down things you can do for your hair - mainly by using protection such as using an umbrella, sun-protective hairspray, and moisturizing hair care products (like JNJS Nourish Mi Oil).

Over-Processed Hair

A lot of us are guilty of this, but trying so many hairstyles without proper hair care will not help the tresses heal. It can make them brittle, prone to breakage, or simply dull. Over-processed hair includes using hair dyes, perms, hair relaxers, and bleach (especially excessive ones) in repeated cycles with no proper hair care during and between such treatments.

Mechanical Damage

While we know that our hair is resilient, rough handling it will make it weaker in the future. This includes combing or detangling, or wearing restrictive hairstyles (ponytail, braids) too often or too long without leaving the tresses to rest in between. To put it simply, any pressure you put on the hair creates damage. Handling them with ease and care will surely help in the long run.

Damage From Hard Water

For some of us, living in locations where hard water is present can be a challenge not just to our health but to the hair as well. The hard water issue is prevalent in cities where it’s common to see people having excess hair fall as the main hair issue.

Hard water contains various minerals such as magnesium and calcium that are not useful to our health (what more our hair) that can lead to brittleness, thinning, hair breakage, and overall dryness. In the long run, the damages can seep through the hair roots and cause extensive harm to the hair follicles.

How Good Diet Helps to Undo Hair Damages

Undeniably, the food that we eat also plays a role in the health of our hair and we highly recommend that you combine this factor with treatments for hair damages that you are currently working on.

And not just any food - nutrients that are ‘hair-friendly’ are the kinds that you need to take as much as you can (within the recommended guideline, of course!) to speed up the hair’s healing process. And of course, while a dietitian might recommend the foods listed here as whole foods, supplements can be the next best alternative as long as the doses are within the recommended range.

Vitamin A

One of the most essential vitamins your hair needs, this vitamin is needed for the hair to make sebum in order to moisturize the scalp (dry scalp that’s what causes the itchiness and dandruff). Too little of this vitamin for an extended period can cause weak hair and hair loss.

Red, yellow, and orange foods such as sweet potatoes, carrots, and tomatoes are some foods that are high in this vitamin to ensure your hair stays strong.

Vitamin C

This vitamin powerhouse is no stranger to skincare. But did you know this wonder antioxidant is needed for your tresses too? Vitamin C is needed to neutralize oxidative stress caused by free radicals, supports collagen and elastin production within your body to produce components in building hair, as well as help the body to absorb the iron that’s also part of the hair growth component. Load up fruits and veggies such as oranges, strawberries, and broccoli for that much-needed vitamin C.

Vitamin E

Just like vitamin C, vitamin E also works to undo oxidative stress in the hair as well. Foods that are high in this vitamin include plant oils (such as olive and avocado), almonds, and green vegetables.

Plus, vitamin E is also part of the nourishing hair oil created by us! More on that below.


No stranger to hair care products and for a good reason - biotin (also commonly known as vitamin B) has been shown in hundreds of studies that lack of the nutrient will cause rapid hair loss. Biotin is needed to carry nutrients and oxygen in the blood supply for the hair to create new hair cells as part of healthy hair growth. Foods that are high in this vitamin include meat, almonds, and green veggies.


Iron works in tandem with vitamin C to bring oxygen and various nutrients from the blood to hair cells. In fact, low in iron will show up rather quickly as rapid hair loss - if this is what’s happening then there is a high chance you need to up this mineral intake - from eggs, lentils, and spinach.


The basic component of creating new cells includes the hair too. Plus, zinc is also extensively used to repair any damages to the hair and ensure oil glands at the hair follicles work as they should. Just like biotin and iron, lacking zinc is also related strongly to hair loss - eat plenty of spinach, lentils, and beef to get the much-needed zinc.


The wonder fatty acids are well-known for supple skin and it works for the tresses too! Foods that are high in this fatty acid include fatty fish tuna, sardines, and mackerel.