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UAMost people look after their hair – they wash it, condition it, sometimes oil it. Yet their hair is dry, brittle, dull or falls out more than it should. The reason is often not what you don’t do, but what you do wrong – every day, unknowingly, in good faith. This article is for anyone with a basic care routine who isn’t seeing results.
Washing habits
Washing your hair in water that’s too hot
Hot water is one of the most common and underestimated causes of dry hair and scalp. High temperature opens the cuticle and washes out the natural lipids that keep moisture in, leaving hair dull, rough and harder to comb after every wash. Wash in lukewarm water and finish with a cool rinse, which closes the cuticle, smooths the hair and adds shine – one of the simplest, cheapest care steps.
Washing every day with a harsh shampoo
A daily sulphate (SLS, SLES) shampoo removes not just dirt and excess sebum but also the scalp’s natural protective layer. A dry, irritated scalp can itch and flake and hair becomes dull – which often leads to more washing and more products. A vicious circle many people keep up for years. The fix: reduce washing frequency gradually (by one day every 1–2 weeks) and switch to a mild, sulphate-free shampoo. The first 2–3 weeks may be hard while the scalp adjusts.
Applying conditioner to the scalp
Conditioner is for the lengths and ends, not the scalp. Its creamy ingredients on the roots clog follicle openings, weigh down the hair and speed up greasiness – and on a sensitive scalp can cause inflammation. Apply from mid-length to the ends; with very long hair, from ear level down.
Rubbing your hair with a towel
Wet hair is especially vulnerable: its outer layer is more open and the hair is swollen and less resistant to mechanical damage. Rubbing causes micro-damage, split ends and breakage – especially with curly and wavy hair. Instead, press the towel to your hair and gently squeeze the water out section by section. Don’t rub, twist or wrap your hair in a tight cotton turban. A microfibre towel or cotton T-shirt (“plopping” for curls) creates less friction.
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Styling habits
Blow-drying without a diffuser or nozzle
A hairdryer without the right attachment blows hot air chaotically, opening the cuticle instead of smoothing it – leaving hair frizzy and dull. A diffuser preserves the natural texture of curly and wavy hair; a concentrator nozzle smooths straight hair for more shine. A study in Annals of Dermatology (Lee et al., 2011) found that blow-drying from about 15 cm, keeping the dryer moving, damaged hair less than very long air-drying. So distance and movement are key – don’t aim hot air at one spot from close up.
Using a straightener or curling iron on wet hair
One of the most damaging habits. Water trapped inside the hair literally boils under the hot tool and turns to steam, rupturing the hair from within – causing the bubbles and cracks visible under a microscope and noticeable brittleness. Absolute rule: straighteners and curling irons only on fully dry hair. If your hair sizzles or steams on contact, it’s still too wet.
Daily heat styling without protection
Using a straightener or curling iron every day without heat protection damages hair systematically and irreversibly. Tool temperatures (160–230°C) exceed the point at which keratin degrades. Apply a heat-protection spray or cream to damp hair before drying and styling – and lower the temperature: most styles can be done at 160–180°C, not 220°C.
Tight updos and hair ties with metal joins
A tight bun, ponytail or braid worn daily in the same place causes traction alopecia – hair loss from mechanical tension. It starts subtly, with thinning at the temples and hairline, and can become permanent if the habit doesn’t change. Ties with metal joins snag and break hair every time you take them out – use fabric ties or silk scrunchies. If you wear your hair up every day, change the position and avoid pulling it tight.
Combing habits
Combing dry, tangled hair from the roots
This is a direct route to mass breakage: the brush hits a knot and, instead of undoing it, breaks the hair or pulls it out. Start at the ends and move gradually up. On dry hair use a natural-bristle brush or wide-tooth comb; on wet hair only a wide-tooth comb or a brush designed for wet hair.
Brushing wet hair with a fine-toothed brush
Wet hair is stretchy, so a fine-toothed or styling brush stretches and breaks it rather than detangling – especially noticeable with curly and high-porosity hair. On wet hair use only a wide-tooth comb or wet-hair brush, ideally after applying conditioner or leave-in.
Scalp habits
Scratching your scalp with your nails
Scratching causes micro-damage and can lead to inflammation and infection. An itchy scalp is a sign that something’s wrong – dryness, a reaction to a product, dandruff – not an invitation to scratch. Massage with your fingertips instead; if itching is chronic, switch to a milder shampoo or see a dermatologist.
Skipping scalp massage
Regularly massaging the scalp with your fingertips for 3–5 minutes during each wash improves blood flow and may support the follicles. A study in ePlasty (Koyama et al., 2016) found that a daily 4-minute scalp massage for 24 weeks was associated with increased hair thickness in the men studied – a small study, so treat it as a hint rather than a guarantee.
Hard water
Hard water, rich in calcium and magnesium, deposits minerals on the hair with every wash. The effects build up: hair becomes dull, heavy, hard to style and responds less to conditioners – especially noticeable in big cities. Solution: a shower filter or a chelating shampoo once every 2–4 weeks to remove mineral build-up.
Diet and lifestyle
Low-calorie diets and protein deficiency
Hair is made mainly of keratin, a protein. Low-calorie diets, fasting and protein deficiency directly affect hair quality and growth – when calories are short, the body cuts nutrient supply to the follicles first, as hair isn’t a biological priority. The deficiencies that most often affect hair: protein, iron, zinc, biotin, vitamin D and B12. If you notice hair loss, get a blood test before buying supplements.
Chronic stress
Stress is one of the few factors that can trigger sudden, heavy hair shedding (telogen effluvium): high cortisol pushes many follicles into the resting phase at once. Shedding usually appears 2–3 months after a stressful event, which makes the link hard to spot. The good news: telogen effluvium is usually reversible once the stress passes.
Sleeping on a cotton pillowcase
Cotton causes a lot of friction – hair rubs against it all night, leading to split ends, breakage and a messed-up style, especially with curly, wavy and long hair. A silk or satin pillowcase greatly reduces friction – a small investment that makes a real difference.
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Harmful habit vs safe alternative
| Harmful habit | Safe alternative |
|---|---|
| Hot water | Lukewarm water, cool final rinse |
| Daily SLS washing | Every 2–3 days, mild sulphate-free shampoo |
| Conditioner on the scalp | Conditioner from mid-length to ends |
| Rubbing with a towel | Gentle squeezing, microfibre towel |
| Straightener on wet hair | Only on dry hair |
| No heat protection | Heat-protection spray before every styling |
| Ties with metal joins | Silk scrunchies or fabric ties |
| Combing from the roots | From the ends towards the roots |
| Scratching the scalp | Massage with fingertips |
| Cotton pillowcase | Silk or satin pillowcase |
FAQ
Can damaged hair be repaired?
Partly. Structural damage such as cracks in the outer layer or split ends is irreversible – the only solution is to cut off the damaged parts. Repair products (keratin, proteins, oils) can temporarily smooth the hair and improve its look but won’t permanently rebuild it. Real improvement comes as healthy hair grows, together with changed habits.
How long does it take to build healthy hair habits?
The first effects show after 4–8 weeks. Full recovery, depending on length and damage, can take from several months to a year. Hair grows on average 1–1.5 cm a month, so improvement is gradual.
How do I know a habit is damaging my hair?
Warning signs: excessive shedding when combing (50–100 hairs a day is normal), split ends several centimetres up, dullness and roughness despite regular care, and hair breaking mid-length (not falling out from the root). Each is a signal to review your habits.
Do hair supplements work?
They work when there’s a documented deficiency. Biotin – one of the most advertised ingredients – only helps if you’re deficient, which is rare in well-nourished people. Get a blood test before taking supplements.
Does frequent cutting make hair grow faster?
No – it’s a myth. Cutting doesn’t affect the growth rate (controlled by the follicles), but it removes split ends that would otherwise travel up the hair. Regular trims every 6–8 weeks make hair look healthier and reach the length you want without breaking.
Summary
Healthy hair is largely about cutting out bad habits, not adding more products. Hot water, harsh shampoo, a straightener on wet hair and a cotton pillowcase can do more damage than the rest of your routine repairs. Start with one change – like a cool final rinse or a fabric hair tie instead of a metal one. Small daily corrections make a bigger difference than one-off treatments.
Want your hair assessed by a professional? Drop in to Haircut Express – our hairdressers will advise where to start. We work without appointments, 7 days a week, in 25 salons in Warsaw and Ząbki and in Poznań, Szczecin, Wrocław, Łódź, Bydgoszcz and Siedlce – find your nearest salon.
Read also
- Hair oiling – which oil and how?
- Washing hair in cold or warm water?
- High-porosity hair – how to care for it?
- How often should you get a haircut?
