How Often Should You Wash Your Hair? By Hair Type

Ask five people how often they wash their hair and you’ll probably get five different answers. Every day. Every other day. Twice a week. Once a week, on a whole wash-day afternoon. And each of them may be right, for their own hair.

That’s why “how often should I wash my hair?” is such a confusing question. Advice online swings from “never wash daily, it strips your hair” to “a clean scalp is a healthy scalp.” Meanwhile you’re left wondering whether your greasy roots mean you’re washing too little, or your frizzy ends mean you’re washing too much.

The honest answer is that there’s no single right number. But there are good starting points, and your hair and scalp give clear signs when it’s time to adjust.

What actually decides how often you need to wash

Washing has two jobs: cleaning your scalp, and clearing away buildup on your hair. How quickly those things build up depends on a few factors:

How oily your scalp is. This is the biggest one. Some scalps look greasy within a day; others stay fresh for a week.
Your hair type. Oil from your scalp travels down straight hair easily, so straight hair can look oily sooner. Curly and coily hair keeps more of that oil near the roots, so the lengths often feel drier and need washing less often.
How fine or thick your hair is. Fine hair tends to look limp and oily faster than thick hair.
Sweat and activity. Regular workouts or a hot, humid climate can mean washing more often.
Styling products. Gels, sprays, oils and dry shampoo all build up and eventually need washing out.
Color or chemical treatments. Hair that’s been colored or chemically treated is often more fragile, and many people wash it a little less often.

Starting points by hair type

Use these as a place to begin, not a rule. Your scalp and your week matter just as much as your curl pattern.

Common starting points by hair type
Hair type	A common starting point	Why
Straight	Every 1–2 days, or as needed	Oil travels down straight strands quickly, so roots can look greasy sooner, especially if hair is fine.
Wavy	Every 2–3 days	Roots can get oily while ends stay dry; washing a bit less often helps waves keep their shape.
Curly	About 1–3 times a week	Curls tend to be drier along the lengths, and frequent washing can leave them frizzy.
Coily	About once a week, or every week or two	Coily hair is often the driest and most delicate, so many people keep washing to a regular wash day.

Not sure which row is yours? The Hair Type Finder takes about two minutes, and our guide to how to tell your hair type explains the patterns in more detail.

A woman in a rose towel wrap gently detangling damp, conditioned curly hair with a wooden wide-tooth comb, holding the ends. — Curly and coily hair often does best with fewer washes and gentle detangling while it’s damp and conditioned.

Signs you may be washing too often, or not often enough

Signs you might be washing too often

Your scalp feels tight, dry or itchy soon after washing.
Your hair feels dry, rough or frizzy, especially at the ends.
Your hair color seems to fade quickly.
Your curls or waves lose their shape and never quite settle.

Signs you might need to wash more often

Your roots look greasy or flat within a day or two of washing.
Your scalp feels itchy, with flakes or buildup that a wash clears up.
Your hair feels coated or heavy, or products stop working the way they used to.
There’s an odor from your scalp before your next wash day.

Some signs, like itching and flaking, can show up either way, so look at the whole picture. If they don’t improve after adjusting your routine for a few weeks, see the note on when to get professional advice below.

How to find your own rhythm

Start with the starting point for your type
Use the table above as your first guess, adjusted for how oily your scalp usually feels.
Change by one day at a time
If your hair feels dry, try waiting one extra day between washes. If your roots get greasy too fast, try washing one day sooner. Small changes are easier to judge.
Give it a couple of weeks
Hair and scalp can take a little while to settle into a new rhythm, so don’t decide after one wash.
Notice what changes
Pay attention to your scalp, your roots and your ends. The right rhythm is the one where your scalp feels comfortable and your hair looks and feels the way you like.

A few washing habits that help any hair type

Focus shampoo on your scalp. That’s where oil and buildup collect. The suds that rinse through your lengths are usually enough for the rest of your hair.
Condition the lengths and ends. They’re the oldest, driest part of your hair. Many people skip conditioner on the roots, especially with fine hair.
Use lukewarm water. Very hot water can leave your scalp and hair feeling drier.
Be gentle with wet hair. Squeeze water out with a towel rather than rubbing, and detangle carefully, especially curly and coily hair.

For building the rest of your routine around these steps, see how to build a simple hair routine.

A smiling woman with long, defined brown curls twisting a curl between her fingers in a sunlit room. — The right washing rhythm is the one that leaves your scalp comfortable and your hair looking the way you like.

What to do between washes

Dry shampoo for oily roots. Handy for stretching a day, but it adds buildup, so it isn’t a replacement for washing. Brush it through well and wash it out regularly.
A water rinse or conditioner-only wash. Some people with curly or coily hair rinse with water, or wash with conditioner only, between shampoo days to refresh their hair without drying it out.
Refresh curls and waves. A light mist of water, or water mixed with a little leave-in conditioner, can bring back definition on day two or three.
Protect hair overnight. A loose style, a satin or silk pillowcase, or a bonnet can help keep hair from tangling and frizzing between washes.
Rinse after heavy sweating. Even if you don’t shampoo, a quick rinse after a workout can help your scalp feel fresher.

Find your starting point

Knowing your hair type gives you a sensible first guess, so you can spend less time experimenting.

When to see a professional

Some flaking and itching can be normal, but if your scalp is very itchy, red, scaly or sore, or flaking doesn’t improve with regular washing, see a board-certified dermatologist. The same goes for sudden or unusual hair shedding, thinning or breakage. Seeing some hairs in the drain is normal, but a noticeable change is worth checking.

Common questions

Is it bad to wash your hair every day?

Not necessarily. If your scalp is oily, or you work out daily, washing every day with a gentle shampoo can be fine. If your hair feels dry or your scalp feels tight, try spacing washes out a little.

Can you “train” your hair to need fewer washes?

Many people say their hair adjusts when they wash less often, but there isn’t strong evidence that you can retrain how much oil your scalp makes. If you want to wash less, stretch the time gradually and use dry shampoo or rinses to stay comfortable.

Does washing your hair make it fall out?

Washing doesn’t cause hair loss. Hairs that have already shed often come out during washing, which is why you notice them in the shower. If you’re seeing much more than usual, talk to a dermatologist.

Should I wash my hair after every workout?

Not always. A water rinse, or simply letting sweat dry and brushing through, works for many people. Wash when your scalp feels oily or itchy.

The bottom line

There’s no perfect number of washes. Start with the common starting point for your hair type, then adjust one day at a time based on your scalp and how your hair feels. Focus shampoo on your scalp, conditioner on your ends, and use rinses or dry shampoo between washes if you need them. If you’re not sure where to start, the Hair Type Finder will point you in the right direction.