Dry, Straw-Like Hair: Causes and How to Care for It
10 min read Hair concerns Updated 5 October 2026 By Anna Sophie Schulenburg
Dry, straw-like hair usually has outside causes: heat, bleach, sun, hard water and washing too hot or too often roughen the cuticle, and the fibre loses water and oil faster than it can hold on to them. So tonight, shampoo goes on the roots only, a mask stays in the lengths for ten minutes, and a leave-in and a drop of oil follow on the ends. If your ends still feel soft on the second day after washing four weeks from now, you have found the trigger.
What happens inside dry hair
Every hair has a fibrous core wrapped in a cuticle whose scales overlap like roof tiles. On top sits a wafer-thin layer of lipids that keeps the hair supple and slows water loss. When the scales lie flat, the hair shines and a comb glides through.
Heat, colour, UV light and friction wear this lipid layer away and lift the scales. The hair then takes up water quickly and loses it just as quickly. The raised scales catch on those of neighbouring hairs and scatter the light. You see dull lengths and feel what many people call “straw-like”: the strand feels stiff, crackles when you touch it and is rough when you run your fingers the wrong way.
The ends are hit first. Hair grows about a centimetre a month, so on shoulder-length hair the ends are two to three years old. Sebum, the scalp's natural oil, barely reaches them on long or curly hair. That is why your roots can look greasy after two days while the ends stay dry.
How to tell if your hair is dry: a self-check
Dry hair feels a lot like two neighbouring problems: a dry scalp and damaged hair. Each of the three needs different care, so it is worth comparing them.
| What you notice | Dry hair | Dry scalp | Damaged hair |
|---|---|---|---|
| Where it is | Lengths and ends | At the roots, on the skin | Lengths and ends |
| How it feels | Rough, stiff, crackly, full of static | The skin feels tight or itchy | Rough, and also brittle or stretchy like elastic |
| After washing | Soft for a while, straw-like again after a day or two | Fine, dry flakes drift down | Stays rough however much conditioner you use |
| When combing | Tangles at the ends, pulls | Nothing unusual | Short broken hairs in the comb, split ends |
| In the light | Dull, no shine | Hair looks normal, skin red or flaky | Dull, often with white dots at the ends |
If the middle column fits better, the problem is on the skin. Which shampoo suits you then depends on whether a dry scalp or dandruff is behind it.
For the lengths there is a simple touch test. Take a dry strand between thumb and forefinger and slide slowly from the end towards the scalp. Every hair feels a little rougher against the direction of growth, so compare the ends with a strand taken right at the root. If the ends are clearly rougher and catch on your fingers, the scales are standing up there and the hair is porous: it takes up water quickly and loses it just as fast.
You can skip the glass test from countless videos. Whether a strand floats or sinks in a glass of water depends on product residue, skin oil and air bubbles; the result tells you little about the cuticle. A wet strand that you pull carefully says more. If it stretches a long way and stays limp instead of springing back, the fibre lacks structure more than moisture, and it makes sense to check the balance between protein and moisture before adding even more mask.
Do two or more rows in the “Dry hair” column apply to you? The free hair analysis asks about thickness, treatments and care habits one by one.
Very dry, straw-like hair: the causes
Usually two or three triggers come together. The table starts with the most common and gives the change next to each one.
| Cause | How you recognise it | What to change |
|---|---|---|
| Heat styling | You blow-dry on the highest setting or straighten above 180 °C, and the ends crackle | Heat protectant before every blow-dry, dryer on a medium setting at 15 cm, straighteners at 160 to 180 °C |
| Colouring and bleaching | The lengths turn straw-like from a certain point, where the old colour starts | When you recolour, have only the roots done, bond care on the lengths |
| Washing too hot or too often | The lengths squeak straight after washing, you wash daily with hot water | Wash lukewarm, shampoo on the roots only, every two to three days if your scalp allows |
| Sun, chlorine and salt water | After a holiday the lengths are lighter and rougher | Leave-in on the ends before swimming, rinse with tap water afterwards, a hat in the midday sun |
| Hard water | White deposits on the shower head, hair dull and coated straight after washing | A clarifying shampoo once a week, rinse thoroughly |
| Age and hormones | From menopause or with the first grey hairs, all your hair feels rougher | Richer conditioner, a mask more often, an extra drop of oil |
Heat is the easiest trigger to switch off. The hotter the straighteners, the faster they roughen the cuticle, and without heat protection before the hairdryer and straighteners the temperature hits the fibre unchecked. Never straighten damp hair. The water inside the fibre heats up in an instant and can burst it from within.
Hard water is less clear-cut. How much it harms the hair itself has hardly been studied. What is certain is that limescale and other minerals can build up on the hair, and this coating feels rough and swallows the shine. A clarifying shampoo removes it, after which the hair takes conditioner better again. Many shower filters mainly hold back chlorine and barely touch limescale, so check what a filter removes before you buy one.
With menopause the scalp often makes less sebum, and hair frequently becomes finer and drier at the same time. Rich care then goes on the lengths only, so the finer roots do not lie flat. If you are also losing more hair, the hormonal changes of menopause may be behind it, and no conditioner changes those.
If the ends are also split or snapping, moisture alone is no longer enough. No product closes split ends for good; only scissors remove them. And bleached lengths need protection against breakage first; extra moisture only helps after that.
Tonight: quick help in one wash
This wash takes about half an hour longer than usual. The amounts are for shoulder-length hair.
- Before washing, work a teaspoon of olive, almond or coconut oil into the dry lengths and leave it for 20 minutes. Skip this step if your hair is fine.
- Shampoo the scalp only, with lukewarm water, and wash twice so the oil comes out completely.
- Squeeze the water out of the lengths and spread a walnut-sized amount of mask from ear level down. Leave it for ten minutes and use that time to comb through with a wide-tooth comb, working up from the ends.
- Rinse lukewarm, press the hair in a towel, put a leave-in on the lengths and let it air-dry or blow-dry on a medium setting. For the night, plait long hair loosely.
The routine for every wash day
Four steps are enough for every wash day. The amounts are again for shoulder-length hair; for chin-length hair use about half, for chest-length about double.
Step 1 — Wash. Lather a hazelnut-sized amount of shampoo on the scalp only, with lukewarm water. The lengths get cleaned as you rinse. Fine to medium hair does well with a light base such as MONAT's Advanced Hydration Shampoo, thick and very dry hair with a richer one such as the Renew™ Shampoo.
Step 2 — Condition. Spread conditioner over the lengths and ends from ear level down, leave it for two to three minutes and detangle with your fingers in the meantime. Once a week a mask replaces the conditioner, for example the Super Moisture Masque, for five to ten minutes. If the ends feel limp and stringy afterwards instead of soft, it was too much or too rich for your hair's thickness.
Step 3 — Leave in. Towel-dried hair gets a leave-in, a conditioner you do not rinse out. Rub two pumps or a pea-sized amount between your palms and work it in from ear level down, for example the Restore™ Leave-In Conditioner. Heat protectant follows before you blow-dry.
Step 4 — Finish the ends. Rub one or two drops of REJUVENIQE® Oil between your palms and press it into the ends only, three for chest-length hair. If the ends clump into strands afterwards, use one drop less next time.
Five mistakes that hold the routine back, and what to do instead:
- Conditioner up to the roots → from ear level down only
- Rubbing with a towel → press the hair into the towel
- Brushing wet hair → wide-tooth comb, working up from the ends
- Oil before leave-in → leave-in first, then oil
- A new product every week → stick with one routine for four weeks
Home remedies and myths: what helps and what doesn't
| Remedy or tip | Verdict | Why |
|---|---|---|
| Honey | Harmless but fiddly | It binds water, but on its own it is sticky and only rinses out with warm water. A teaspoon in your conditioner is enough. |
| Egg | Harmless, no substitute for conditioner | The fat in the yolk makes the lengths a little more supple. Rinse it out with cool water first so no sticky residue stays in the hair. There is no evidence that egg repairs the fibre with its protein. |
| Olive oil | Helps thick hair | As a pre-wash treatment it makes thick, dry lengths more supple. It flattens fine hair and needs two rounds of shampoo. |
| Beer | Useless for dryness | Malt leaves a film on the hair that gives it more grip. It adds no moisture, and the smell lingers. |
| Rinsing with cold water | Seals nothing | The cuticle is keratinised tissue and does not open or close with water temperature. A cool final rinse feels smoother to some people and does no harm; that is all it does. |
| Not washing at all | Can do harm | Sebum still does not reach the ends, and the scalp may itch. Washing lukewarm and less often helps more. |
What you notice after one wash, four weeks and three months
After the first wash you mostly feel the conditioning film. If the comb glides more easily and the ends feel smoother, that comes from conditioner, leave-in and oil. The film lasts until the next wash; the fibre underneath is the same.
After four weeks you can tell whether you have dealt with the cause. Do the touch test on the second day after washing, always on the same strand. If the ends are still soft and crackle less, no trigger is working at full strength any more. If they turn straw-like again after a day, go through the causes table once more, row by row.
After three months about three centimetres have grown. At the start, note the point from which your hair feels straw-like. If that line has moved down with the growth, the new hair is staying intact, and your hairdresser can cut off the strawiest centimetres at your next appointment. If the straw-like part still begins at the same height on your head, a trigger is still at work.
When to see a doctor
If your hair is dry and brittle from the roots even though you neither colour nor heat-style it, or if the dryness comes with increased hair loss, very dry skin, constantly feeling cold or tiredness, see your GP. A blood test can check your thyroid (TSH) and your iron stores (ferritin), because an underactive thyroid or iron deficiency can also show in the hair. Red, flaky or weeping patches on the scalp are a matter for a dermatologist.
What care can do
Support cleansing, conditioning, manageability, shine, frizz control, protection from avoidable breakage and a fuller-looking appearance, depending on the product and its substantiated claims.
What it cannot do
Diagnose disease, correct hormonal causes, create new follicles or permanently fuse fully split hair ends.
| Situation | Core system | Optional | Avoid or limit | Why |
|---|---|---|---|---|
| Fine to medium, dry | ADVANCED HYDRATING SYSTEM | SUPER MOISTURE MASQUE | Heavy oils/masks daily | Adds light moisture without weighing fine hair down. |
| Medium to thick, very dry | RENEW™ HYDRATING SYSTEM | REJUVENIQE® OIL INTENSIVE | — | A richer base for thicker hair that stays rough otherwise. |
| Also breakage or bleaching | Monat Bond IQ Fortifying Shampoo | RESTORE LEAVE-IN CONDITIONER | Heat without heat protection | With damage, targeted damage care matters alongside moisture. |
Fine to medium, dry hair
Core routine
- ADVANCED HYDRATING SYSTEM
Optional
- SUPER MOISTURE MASQUE
- RESTORE LEAVE-IN CONDITIONER
Shampoo at the roots, conditioner mainly through the lengths. Mask as needed, not daily.
Medium to thick, dry hair
Core routine
- RENEW™ HYDRATING SYSTEM
Optional
- SUPER MOISTURE MASQUE
- REJUVENIQE® OIL INTENSIVE
Richer base; a small amount of oil on the dry ends only.
Right away
Right after use, hair often feels smoother and easier to comb.
With continued use
With regular use, the lengths look suppler and less straw-like over a few weeks.
What it can't do
Ends that are already split or broken aren't repaired; only a cut removes those.
Quick questions
Is brittle hair the same as dry hair?
Brittle means dry and also prone to breaking. If a strand snaps when you bend it or you find lots of short broken pieces in the comb, the fibre is damaged beyond dryness, and in the self-check the right-hand column fits better.
Is curly hair naturally drier?
Yes, usually. Sebum travels down a straight hair more easily than down a curl, so less of it reaches the lengths of curly and coily hair. Curls often need richer care even when they are not damaged at all.
Does drinking more water help dry hair?
No, as long as your body is getting enough fluid. The lengths are keratinised tissue with no link to your circulation; their water comes from outside, through washing, conditioning and the humidity of the air.
Does central heating make hair drier?
Yes, a little. Hair absorbs water from the air in a room and gives it back when the air is dry, which is why the lengths are rougher in winter and build up more static. A leave-in before you go out and a silk scarf under a woollen hat reduce friction and static.
Do silicones dry out hair?
No. Silicones leave a film on the surface that makes the hair smoother and protects it from friction. If heavy silicones build up over many washes, the hair feels weighed down and dull; a clarifying shampoo every two to four weeks then removes the coating.
The free hair analysis asks which of the six causes apply to you and suggests a moisture routine that matches your hair's thickness.