How long does a blow-dry last?
A few days of grace, and everything that helps them last longer.
By Manel, M BRUSH5 min read
N° 03
Styling and care
The essentials
A blow-dry generally lasts two to four days, sometimes longer. The duration depends above all on the nature of the hair, the finish chosen, humidity, perspiration and the friction of the night. A silk pillowcase, a loose bun and a little dry shampoo prolong it.
The honest answer fits in one sentence: a blow-dry generally lasts two to four days, sometimes more, sometimes less.
No one can promise you an exact number of days, because how long it lasts depends as much on your hair and your week as on the gesture itself. What is certain is that you can clearly prolong it by knowing what makes it drop.
What decides how long it lasts
Five factors weigh more than all the others. Knowing them is already knowing what to expect.
The nature of your hair
- Thick hair: it holds its shape well and gets greasy less quickly. It is often on this hair that a blow-dry lasts the longest.
- Fine hair: the shape holds, but the roots look greasy sooner and drop. The lasting power is decided at the scalp.
- Curly or frizzy hair: once smoothed, it only wants to return to its shape at the slightest contact with humidity.
- Oily scalp: whatever the fibre, it is often the scalp that sets the date of the next shampoo.
The finish chosen
Not all finishes age in the same way.
| Finish | How it ages |
|---|---|
| Sleek | Holds, but shows humidity |
| Soft | Relaxes gently |
| Volume | Drops with sebum |
| Brush curls | Becomes a wave during the day |
| Iron curls | More defined, more durable |
On a sleek finish, roots that swell up again are immediately visible. Volume, for its part, is decided at the roots: it drops as they become charged with sebum.
Humidity
It is the number one enemy. Water undoes the shape given by heat: rain, fog, the steam of a shower or a kitchen are enough to make roots swell or lengths wave.
Perspiration
Sport, an overheated room, a journey in full sun: perspiration humidifies the roots and the nape, exactly where a blow-dry is most fragile.
Friction
Pillow, coat collar, scarf, bag strap, hat: everything that rubs against the hair creases it, makes it static and wears down the shape.
Why soft lasts so well
If duration matters above all to you, the soft blow-dry is often the best compromise. Its slightly rounded ends are designed to move.
When they relax on the second or third day, the hairstyle does not look "fallen", it simply looks more natural. A perfect sleek finish, by contrast, shows the slightest flaw.
A blow-dry does not last a number of days: it lasts as long as you protect it from water, sebum and friction.
The gestures that prolong it
The first day, decisive.Avoid rain without protection, sport and steam. Do not constantly run your hands through your hair: fingers deposit sebum and undo the shape.
The night.This is where a good part of the hold is lost. A silk or satin pillowcase, a loose bun held by a scrunchie, a few clips for the ends: everything is in the article on making your blow-dry last the night.
The second and third day.A little dry shampoo, applied before the grease becomes visible, gives the roots body again. A small round brush and a few seconds of hot then cold air revive a front strand.
Our article on dry shampoo after a blow-dry explains how to dose it.
What shortens it without you realising
Some habits ruin a blow-dry without you noticing.
- The morning shower, even with a cap: the steam rises all the way to the roots. A lukewarm, short shower with the door open limits the damage.
- Sport in a gym. It is not forbidden, but it is prepared for. We talk about it in our article sport, shower and hammam.
- Sunglasses on your head and a tight elastic, which leave a kink.
- Arriving at your appointment with product in your hair: an oil or a serum weighs down the fibre and makes the blow-dry drop faster. That is why we ask you to come with clean hair, without oil, serum or styling product.
When should you wash it?
There is no fixed rule. The right moment is when the scalp asks for it: greasy roots, itching, a feeling of heavy hair.
Prolonging a blow-dry should not come at the expense of the scalp's comfort. Dry shampoo helps to gain a day, it does not replace a real wash.
Booking at the right moment
To make the most of your blow-dry, book it with your week in mind: the day before or the day of an event rather than just before a sports session or a weekend by the water.
Booking takes two minutes: length, finish, slot. No deposit is required: everything is settled on the day of the appointment.
If your week changes, you can cancel or reschedule by letting us know at least 24 hours in advance.
Fancy a hairstyle that ages with elegance? Book your soft blow-dry, or first compare the five finishes on the menu.
Frequently asked questions
- Can a blow-dry last a week?
- It happens on certain thick, not very greasy and well protected hair, but it is not the rule. Better to count a few days and consider the rest as a bonus.
- Why does my blow-dry drop on the very first day?
- Most often because of humidity (rain, steam, perspiration) or a product left in the hair. Roots that are not quite dry to begin with can also swell up again quickly.
- Can you wash your hair the day after a blow-dry?
- Of course, if your scalp asks for it. The blow-dry will simply disappear on contact with water.
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