How Long do Blowouts Last? Complete Answer

You have just left the salon with bouncy, glossy hair and you want it to stay that way. So how long do blowouts last? For most people, a professional blowout lasts 3-5 days, and with the right aftercare you can stretch it to a full week. Fine, straight hair tends to drop faster (2-3 days), while thick or coarse hair can hold a blowout for 5-7 days. Humidity is the biggest enemy — one damp London commute can undo a day of smoothness. Below is everything that affects how long your blowout survives and the exact steps to make it last.

What affects how long a blowout lasts

• Hair type. Fine, straight hair goes limp fastest. Thick, wavy or coarse hair holds volume and shape for days longer.
• Weather and humidity. Moisture in the air swells the hair shaft and brings back frizz. Rain, fog and steamy Tube journeys are blowout killers.
• Scalp oiliness. Oily scalps flatten roots by day two or three. Dry scalps can go much longer between washes.
• Products used. A good heat protectant, smoothing serum and light-hold finishing spray add a day or more. Heavy oils near the roots shorten life.
• How you sleep. Tossing on a cotton pillowcase creates friction, frizz and flat spots overnight.

How to make your blowout last: step by step

1. Do not touch it. Hands transfer oil and flatten volume. Admire it in the mirror, not with your fingers.
2. Wrap or pineapple at night. Gather hair into a loose high ponytail or bun on top of your head (the “pineapple” method) or wrap it in a silk scarf. This protects the shape while you sleep.
3. Switch to a silk or satin pillowcase. Less friction means less frizz and fewer dents by morning. Our guide to how to sleep with wet hair covers the same night-time protection principles.
4. Use dry shampoo from day two. Spray at the roots before bed, not in the morning — it absorbs oil overnight and you wake up fresh. Brush through in the morning.
5. Keep hair away from water and steam. Wear a shower cap in the shower, and avoid long hot baths where steam surrounds your head.
6. Refresh with heat, sparingly. A quick pass with straighteners or a round brush on day 3-4 revives drooping sections. Always use heat protectant — ghd‘s styling guides are a reliable reference for heat-safe technique.
7. Carry an umbrella. In the UK this is not optional advice. One rain shower can end a blowout instantly.

Salon blowout vs at-home blowout

A salon blowout (£25-£60 in most UK cities, more in central London) usually outlasts a DIY one because stylists use professional dryers, proper tension with a round brush, and finishing products matched to your hair. An at-home blowout typically lasts 2-4 days — still worth it, but expect a day less. If you are growing out a fringe alongside your blowout routine, see how to make bangs grow faster for styling tips during the awkward phase, and how to style bangs for keeping them sitting right for days.

When should you wash it out?

Wash when your roots look greasy even after dry shampoo, the ends feel dry and tangled, or the style has collapsed beyond refreshing — usually day 4-6. Do not push past a week: product build-up and scalp oil can irritate the scalp and actually make your next wash less effective. When you do wash, give your scalp a proper double cleanse to remove all the styling products.

Tips

• Book morning appointments so the blowout is freshest for your event, not the night before.
• Ask your stylist which products they used so you can refresh with the same ones at home.
• A light mist of flexible-hold hairspray on day one adds staying power without stiffness.
• For workouts, wear a sweat-wicking headband and keep hair up — then dry shampoo the hairline after.
• Avoid silk-press-level heat at home if your hair is already fragile; a blowout should not cost you breakage.
• If frizz is your main problem generally, independent reviews at Which? can help you choose a genuinely effective anti-frizz dryer or straightener.

FAQs

Can a blowout last a full week?

Yes, on thick, dry, coarse hair with careful aftercare — silk pillowcase, nightly wrapping, dry shampoo and no water contact. On fine or oily hair, 3-4 days is more realistic.

Does rain ruin a blowout completely?

Heavy rain, yes — water resets the hair to its natural texture. Light drizzle can sometimes be rescued with a quick blow-dry and serum once you are indoors, but prevention with an umbrella or hood beats any rescue attempt.

Is it bad to not wash your hair for a week after a blowout?

For most healthy scalps it is fine occasionally, but do not make it a habit. A week of build-up can cause itching, odour and blocked follicles. If your scalp feels irritated, wash it — no hairstyle is worth scalp problems.

How much does a blowout cost in the UK?

Typically £25-£45 outside London and £40-£60+ in central London salons. Blow-dry bars often offer memberships that bring the per-visit cost down if you go weekly.

Can I get a blowout on curly hair?

Absolutely — a silk blowout on curly or coily hair gives a smooth, stretched result. Expect it to last 5-7 days or more, since textured hair holds the style well. Just make sure your stylist uses proper heat protectant to avoid heat damage.

A blowout is an investment, and a few simple habits — wrapping at night, dry shampoo, keeping water away — can easily double its life from two days to five or more. Treat the aftercare as part of the appointment and you will get salon hair all week, not just on day one.