How often should you wash your hair? There is no single correct number. The right schedule depends mostly on how much oil your scalp makes, then on your hair texture, how active you are and which products you use. The aim is a clean, comfortable scalp without stripping the lengths of your hair.
Start with your scalp
Shampoo is for the scalp. It removes oil, sweat, dead skin and product residue. Dermatologists advise basing frequency on how oily your scalp is:
- Oily scalp: may need washing every day or every other day.
- Balanced scalp: every two to three days suits many people.
- Dry scalp or dry, textured hair: once or twice a week may be enough.
A guide by hair type
| Hair and scalp | Common starting point |
|---|---|
| Fine, straight hair with an oily scalp | Daily or every other day |
| Medium straight or wavy hair | Every two to three days |
| Thick, curly hair | Every three to seven days |
| Coily or tightly curled hair | Once a week or every other week |
| Color-treated, bleached or relaxed hair | Less often, with gentle products |
| After heavy sweating or swimming | Wash or at least rinse the same day |
These are starting points. Adjust by a day in either direction and see how your scalp and hair respond over two or three weeks.
Why texture matters
Oil from the scalp travels down straight hair easily, so straight hair looks greasy sooner. On curly and coily hair the oil cannot move along the bends, so the lengths stay dry even when the scalp is oily. That is why tighter curl patterns usually do better with fewer washes and more conditioning.
Signs you are washing too often
- Hair feels dry, rough or straw-like.
- Color fades quickly.
- The scalp feels tight or itchy straight after washing.
- Ends split and tangle more.
Signs you are not washing often enough
- Roots look greasy and flat.
- The scalp itches, smells or flakes.
- Product builds up and hair looks dull.
- You notice more dandruff. Flakes from dandruff often improve with more frequent washing, not less. See Dandruff vs Dry Scalp: How to Tell the Difference.
How to wash well
- Wet your hair thoroughly with lukewarm water.
- Massage shampoo into the scalp with your fingertips. Let the foam run through the lengths as you rinse.
- Apply conditioner from mid-length to the ends, and to the whole length for curly and coily hair.
- Rinse well.
- Blot with a towel. Do not rub.
Stretching the time between washes
- Rinse with water and condition only the ends after a workout.
- Use dry shampoo at the roots for a day. It absorbs oil but does not clean the scalp. See Dry Shampoo Buying Guide: Formulas and Application.
- Keep your hands, heavy oils and thick serums away from the roots.
- Wash brushes and pillowcases regularly.
Does hair "train" itself to be less oily?
Many people believe that washing less teaches the scalp to produce less oil. Oil production is controlled mainly by hormones and genes, and there is no good evidence that washing habits change it. What does change is how you manage the oil between washes.
When your schedule needs to change
Age, hormones, seasons, new medicines and new routines all shift oil production. Teenagers often need to wash more, and many people wash less as they get older. Check again if your scalp starts to feel different. Oily Scalp Care: A Simple Washing Routine has a routine for an oily scalp, and How to Find Your Hair Type helps you identify your hair type. The Hair Wash Schedule Planner can lay out your wash days for the week.
Related on ArniSun
- Hair Wash Schedule Planner: Plan Your Wash Days
- How to Find Your Hair Type
- Oily Scalp Care: A Simple Washing Routine
- Dandruff vs Dry Scalp: How to Tell the Difference
- Dry Shampoo Buying Guide: Formulas and Application
Sources and further reading
Frequently asked questions
Is it bad to wash your hair every day?
Not if your scalp is oily and you use a gentle shampoo. Daily washing can be too drying for curly, coily, colored or naturally dry hair.
Can washing too little cause hair loss?
Infrequent washing does not cause hair loss by itself, but build-up can worsen scalp conditions such as dandruff, and an inflamed scalp is not good for hair.
Should I shampoo twice in one wash?
One wash is enough for most people. A second lather helps when hair is very oily or carries a lot of styling product.