Ever wondered why your hair feels rough, looks dull, or seems to break more easily after using your favorite straightener, curling iron, or blow dryer?
Heat styling tools can give us the perfect look for the day, but over time, they can also cause some serious damage to our hair.
High temperatures strip away moisture, weaken the hair shaft, and even alter its natural structure, leading to split ends, frizz, and breakage.
In this guide, we’ll break down how to spot damage hair, and—most importantly—how to repair and protect your hair while still enjoying those styling tools.
Table of contents
Damage Caused by Heat Styling Tools
Hair consists of several layers, the outermost layer, the cuticle, protects the layers inside from damage and makes the hair smooth and shiny.
Damage caused by thermal heat includes split ends, hair breakage, and bubbly hair.
Split ends
This damage occurs in the hair shaft, caused by physical damage to the hair fiber that forms fractures along the hair. The hair cuticle cells are absent and the hair fiber is split at the ends.
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| Split end under microscope |
Brittle hair
This condition can be caused partly due to excessive or repeated physical trauma from the use of thermal heat. The hair shaft shows an appearance like two brush tips facing each other.
In addition, cuticle cells are reduced or lost along the hair. This weakens the hair shaft causing the hair to break easily and become brittle.
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| Hair strand breaks |
Bubbly hair
When using heat styling on wet hair, the heat causes the water in the hair to evaporate. The water vapor that tries to escape causes the hair fiber to expand, eventually giving it a sponge-like appearance.
Dry hair
The heat from heat styling tools change the structure and remove the moisture from the hair, thus causing dry hair.
Rough hair
Due to the continuous heat applied to the hair shaft, damaging the cuticle cells (reducing or eliminating) results in an uneven hair surface which causes the hair to feel rough to the touch.
Preventing
While there's no guarantee that treating damaged hair will fully restore it to its original condition, taking care of it can help prevent and protect hair shafts from further damage, which can make hair look and feel better.
Minimalize the use of heat styling tools .
Try reducing the use of heat styling tools to just once a week or so, or save them for special occasions. You can also try natural styling techniques to get the look and texture you want for your hair.
Set temperature on low heat.
At higher temperatures, heat can break down the proteins in your hair even more, leading to serious damage. So, if you still want to use heat styling tools, try to keep the temperature low.
Also, make sure to clean off any product buildup on your tools, especially flat irons. This helps protect your hair and keeps your tools working at their best.
Dry hair before styling
Using heat styling tools on wet hair can damage your hair shaft, make sure it is completely dry before styling.
Use Heat Protectant
To protect your hair from heat damage, always use proper heat protectant before styling your hair. It will coat your hair shaft and protect it from drying out and further damage.
Air Drying Method
Air drying is highly recommended, especially if your hair is already dry and brittle. Use microfiber towels or an old T-shirt to blot excess water by gently tapping it on your hair.
Avoid rubbing your hair as this may lift the cuticles or further damage the hair shafts.
Repairing
Moisturize hair: Using a hair mask once a week will help restore moisture and hydrate hair, then follow with a conditioner to seal in the moisture. Try DIY hair masks or products rich in shea butter or keratin ingredients.
You can also use hair oils or hair serum on damp hair to add extra shine and moisture. Avoid using too much product as it can make your hair greasy and attract dirt.
Leave-in conditioner is a go-to product when you're outside and need a touch-up to tame your hair against dry weather.
Use the right hair products: A mild shampoo or a shampoo specially formulated for damaged or dry hair will add moisture and hydration to the hair.
Avoid shampooing too often, shampooing 2-3 times a week is enough to remove sebum and dirt from your scalp.
Treat your hair gently: Treat your hair as if it were a newborn baby and do not pull or rough comb your hair. Already brittle hair has lost its elasticity, rough combing hair will lead to breakage.
It is also recommended that you comb your hair before washing to help untangle it during the wash.
Trim split ends: Nutrients are distributed from the follicle to the hair shaft to keep it healthy. Cutting off split ends can help nutrients focus on restoring health to less damaged parts of the hair shaft.













