10 Hair Care Habits That Are Secretly Damaging Your Hair (And What to Do Instead)
We all want healthy, shiny, strong hair, but sometimes the very routines we follow in the name of “hair care” are the ones doing the most damage. The tricky part? Most of these habits feel completely normal. You’ve probably been doing some of them for years without realising they’re quietly wreaking havoc on your strands.
As someone with curly hair, trying to find solutions to keep my curls healthy was a huge task, from trying methods like the curly girl method to unlearning hair-damaging habits. You learn a lot about your hair from trying to unlearn certain old habits. From excessive hair washing to overusing hair styling products, a lot of my habits have taught me specific lessons about my hair.
Table of contents
- Washing Your Hair Every Single Day
- Rubbing Your Hair with a Towel
- Overusing Heat Styling Tools
- Brushing Hair When It’s Wet
- Wearing Tight Hairstyles Too Often
- Skipping Conditioner (or Not Using Enough)
- Over-Colouring or Using Harsh Chemical Treatments
- Neglecting Your Scalp
- Using the Wrong Pillowcase
- Ignoring Your Diet and Internal Health
- Frequently Asked Questions
Here is my personal list of hair care habits that seem like everyday practice, but can secretly cause hair damage!
Washing Your Hair Every Single Day
Let’s start with one of the biggest myths in hair care: that squeaky-clean feeling means healthy hair. Washing your hair daily strips it of its natural oils, known as sebum, which are actually your hair’s built-in moisturiser and protectant.
When those oils are constantly being washed away, your scalp goes into overdrive trying to compensate, producing more oil and leaving your hair in a frustrating cycle of greasiness and dryness.
What damages hair here: Over-cleansing disrupts the scalp’s natural microbiome and weakens hair at the root over time.
Understand the different types of shampoos available; this will give you a proper understanding of the needs of your hair.
The eco-friendly swap
Stretch washes to every 2–3 days (or longer, once your scalp adjusts). When you do wash, reach for a sulphate-free, biodegradable shampoo in a refillable or solid bar format. Shampoo bars create zero plastic waste and often last up to three times longer than a liquid bottle. Win-win.
| Washing your hair daily is acceptable, but whether it is harmful truly depends on your hair type! Oily Hair Individuals with fine hair or overactive sebaceous glands may need to wash every 1 to 2 days to prevent a greasy appearance and scalp buildup. Dry or Coarse Hair This type benefits from natural oils. Washing every 3 to 7 days is usually sufficient to maintain moisture and prevent brittleness. Curly and Coily Hair Because sebum takes longer to travel down the hair shaft of curls, washing once a week or every 10 days helps prevent frizz and breakage. Chemically Treated Hair Over-washing color-treated or permed hair can lead to premature fading and excessive dryness. |
Overwashing, especially if you have hard water in your area, can severely compromise the health of your skin and hair by disrupting their natural moisture barriers. Hard water contains high concentrations of dissolved minerals, primarily calcium and magnesium.
When these minerals interact with soaps and shampoos, they create a film often referred to as “soap scum” that clings to the surface of the body. Using a chelating shampoo for hard water is essential, but remember to understand your hair type and scalp health before you use a shampoo.
Rubbing Your Hair with a Towel
After a shower, the instinct is to grab a towel and vigorously rub your hair dry. It feels efficient. It is not kind. Wet hair is in its most fragile state; the hydrogen bonds that give your hair its structure are temporarily broken, making strands highly susceptible to breakage.
That rough towel friction causes frizz, split ends, and, over time, real structural damage to your hair shaft.
What damages hair here: Friction on wet strands causes hair damage, breakage, and raises the cuticle, leading to long-term frizz and dullness.
The eco-friendly swap
Switch to a microfibre towel or, even better, an old cotton T-shirt.
These create far less friction and work with your hair’s texture rather than against it. Gently squeeze and scrunch, never rub. Old T-shirts are also a great way to repurpose fabric that might otherwise end up in a landfill.
| Rubbing your hair with a towel does not cause true hair loss, which involves the follicle, but it frequently causes significant hair breakage. When wet, the hair shaft is at its most fragile because the protective cuticle is raised and swollen. Vigorous rubbing creates harsh friction that leads to split ends, fraying, and snapping of the hair strands, which can make hair appear thinner and damaged over time. To protect your hair, avoid scrubbing entirely; instead, gently blot moisture using a microfiber towel or a soft cotton T-shirt, and squeeze—never twist—to remove excess water. If you notice actual hair shedding from the root, that is a separate issue related to internal factors and warrants consultation with a medical professional. |
Overusing Heat Styling Tools
Straighteners, curling wands, blow dryers, they’re everywhere, and they’re incredibly convenient. But consistent exposure to high heat is one of the most well-documented causes of hair damage. Heat literally breaks down the keratin proteins that make up your hair shaft, leaving strands brittle, porous, and prone to snapping.
What damages hair here: Temperatures above 180°C can permanently alter the structure of your hair’s cortex, causing damage that cannot be repaired — only cut off.
The eco-friendly swap
Air-drying is always the most hair-friendly (and planet-friendly) option. If you do use heat, invest in a quality tool with adjustable temperature settings and never skip a heat protectant spray.
Look for heat protectants in recyclable glass bottles or solid formats. Also consider heatless styling — satin rollers, braiding damp hair overnight, or banding techniques can give you beautiful results with zero energy consumption.
Brushing Hair When It’s Wet
Brushing wet hair, especially with a standard paddle brush, is a recipe for breakage. As mentioned above, wet hair stretches much more than dry hair before it snaps. When you force a brush through tangles on wet hair, you’re essentially pulling strands to their breaking point.
What damages hair here: Wet hair has up to 70% less tensile strength than dry hair. Brushing it aggressively causes mechanical breakage and split ends.
The eco-friendly swap
If you need to detangle wet hair, use a wide-tooth comb made from sustainable materials like bamboo or recycled plastic, and always start from the ends, working your way up to the roots. A good plant-based detangling spray or leave-in conditioner can also make this process much gentler.
Wearing Tight Hairstyles Too Often
A sleek high ponytail or a tightly wound bun looks polished, but your follicles are not fans. Consistently wearing hair pulled tightly can create a condition called traction alopecia — a form of hair loss caused by repeated tension on the hair follicles. This is particularly common along the hairline and temples.
What damages hair here: Chronic tension at the root can scar the follicle over time, leading to permanent hair thinning in affected areas.
The eco-friendly swap
Vary your styles and opt for looser alternatives when possible. When you do tie your hair back, use fabric-covered elastics or scrunchies made from organic cotton or silk offcuts — these cause significantly less friction and breakage than standard elastic bands. And please, ditch the metal hair ties entirely.
Skipping Conditioner (or Not Using Enough)
Some people skip conditioner to avoid weighing their hair down, or because they think it’s unnecessary. Others use it but only on the lengths, forgetting that the scalp’s natural oils struggle to travel all the way down longer hair shafts. Either way, your hair ends up lacking the moisture and protection it needs.
What damages hair here: Without adequate moisture, hair becomes brittle, porous, and increasingly prone to breakage and split ends.
The eco-friendly swap
Use a nourishing conditioner every wash — or a co-washing product if your hair is very curly or dry. Look for conditioners with natural, biodegradable ingredients and packaging that’s refillable or made from recycled materials.
A weekly deep conditioning mask, especially one made with natural oils like argan, coconut, or shea butter, can make an enormous difference to hair health over time.
Over-Colouring or Using Harsh Chemical Treatments
Frequent dyeing, bleaching, perming, or relaxing takes a serious toll on hair.
These chemical processes work by penetrating and altering the hair’s inner structure, which means they’re inherently damaging by design. When done too often or without proper aftercare, the cumulative damage can leave hair weak, snapping, and difficult to manage.
What damages hair here: Chemical treatments break down the disulfide bonds within the hair cortex and raise the cuticle, making hair porous and fragile.
The eco-friendly swap
Extend time between colour appointments and consider lower-impact alternatives like semi-permanent or demi-permanent dyes, which don’t require bleach. Plant-based dyes (henna, indigo, cassia) are a zero-waste, biodegradable option that can add depth and shine. If you do colour, prioritise colour-safe, sulfate-free aftercare to extend longevity and reduce how often you need to retouch.
Neglecting Your Scalp
Your scalp is skin, and like the rest of your skin, it needs attention.
A flaky, irritated, or congested scalp is a hostile environment for healthy hair growth. Product buildup from dry shampoos, styling products, and silicone-heavy conditioners can clog follicles and slow down growth, or even contribute to hair thinning.
What damages hair here: An unhealthy scalp disrupts the hair growth cycle, leading to slower growth, increased shedding, and weaker new hairs.
The eco-friendly swap
Incorporate a gentle scalp massage into your routine — it increases blood circulation to follicles and can be done with clean fingertips or a bamboo scalp massager. Use a clarifying wash or scalp scrub (look for ones with natural exfoliants like sugar or sea salt) once a month to remove buildup.
And check your styling products for silicones, which can accumulate and cause congestion over time.
Using the Wrong Pillowcase
This one surprises people. The fabric against which your hair rests for 6–9 hours every night has a significant impact on its condition. Rough cotton pillowcases create friction as you move in your sleep, leading to tangles, frizz, and gradual breakage, especially along the more fragile ends of your hair.
What damages hair here: Nightly friction on rough fabric raises the hair cuticle repeatedly, causing cumulative damage, frizz, and mechanical breakage over time.
The eco-friendly swap
Switch to a pillowcase made from organic silk or satin — or even a natural bamboo fabric, which is breathable, sustainable, and far gentler on hair. Alternatively, sleeping with your hair loosely braided or in a low bun can protect strands while you rest. A silk scrunchie to secure it keeps things gentle.
Ignoring Your Diet and Internal Health
Hair reflects what’s happening inside your body, not just outside. Deficiencies in iron, zinc, vitamin D, protein, and omega-3 fatty acids are all closely linked to unhealthy hair — thinning, shedding, dullness, and slow growth. If you’re doing all the right things externally but neglecting nutrition, your hair will tell the tale.
What damages hair here: Hair follicles are among the most metabolically active cells in the body, and they’re sensitive to any nutritional shortfall.
The eco-friendly swap
Focus on a plant-rich diet full of leafy greens (iron), legumes (zinc and protein), seeds like flaxseed and chia (omega-3s), and plenty of colourful vegetables (antioxidants). If you’re considering supplements, choose brands with ethical sourcing and minimal packaging. Sustainable eating is good for the planet — and it turns out, it’s also good for your hair.
Healthy hair isn’t about spending more money or using more products — often it’s about doing less, more thoughtfully. By identifying and ditching the habits that cause damage to hair, and replacing them with gentler, lower-impact alternatives, you’re not just being kinder to your strands. You’re being kinder to the planet, too.
Small changes compound. A shampoo bar here, a silk pillowcase there, one less heat styling session a week — over time, these choices add up to a head of hair (and a household routine) that you can genuinely feel good about.
Your hair is worth it. So is the earth.
Frequently Asked Questions
The most common culprits are washing hair too frequently, rubbing it dry with a rough towel, overusing heat styling tools, and brushing wet hair. These are everyday habits that most people don’t think twice about — but over time, they cause real structural damage to the hair shaft and weaken strands at the root. The good news is that each one has a simple, low-effort fix.
Yes, it can. Daily washing strips the scalp of its natural oils (sebum), which are actually your hair’s built-in moisturiser and protector. Without them, hair becomes dry and brittle, and your scalp overcompensates by producing even more oil, trapping you in a cycle of greasiness and dryness.
Most people do well washing every 2–3 days. If you’re transitioning away from daily washing, a dry shampoo (ideally in a plastic-free format) can help during the adjustment period.
It really does. Wet hair has significantly less tensile strength than dry hair — it stretches much further before it snaps, which means dragging a brush through wet tangles causes breakage you wouldn’t see with dry hair. If you need to detangle after washing, use a wide-tooth comb (bamboo ones are a great sustainable option) and always work from the ends up to the roots, never root to tip.
Bleaching and chemical treatments cause the most serious damage, as they alter the internal structure of the hair. When it comes to styling tools, flat irons and curling wands used at very high temperatures (above 180°C) are particularly damaging because they break down the keratin proteins in the hair cortex, and that kind of damage is permanent. It cannot be repaired, only cut off. Always use the lowest effective heat setting and never skip a heat protectant.
For most hair types, yes. Conditioner does more than just soften hair — it helps seal the cuticle, restore moisture, and protect strands from environmental damage and breakage. Without it, hair becomes increasingly porous and brittle over time. If you’re worried about weighing your hair down, try a lightweight conditioner applied only from mid-lengths to ends, or switch to a leave-in conditioner for finer hair types.
