5 mistakes to avoid at the beach for your hair

What you must remember

The damage caused by the beach comes mainly from what we do right before and right after: going into the water with dry hair, forgetting to protect the scalp, letting the salt dry, and brushing it out while still in the water. Five mistakes, five simple steps to correct them.

  • Wetting your hair before swimming greatly limits salt absorption.
  • The scalp is exposed skin: a hat is mandatory.
  • Dried salt abrades the cuticle: rinse immediately
  • Never brush dry hair laden with salt and sand
protecting your hair at the beach

A beach day accumulates three simultaneous assaults — UV, salt, sand — and most of the The damage comes less from the beach herself rather than what we do Just before and just after. Here are the five most frequent mistakes, and the A gesture that corrects each one.

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Mistake #1: Entering the water with dry hair

This is the most costly mistake, and the easiest to correct. Dry hair absorbs sea salt like a sponge; hair already saturated with fresh water has no more room for it. Wetting your hair in the shower before every swim drastically changes the condition of the lengths by the end of the day.

  • Salt draws water outwards and dehydrates the fiber
  • A pre-moistened fiber absorbs much less
  • The same principle applies to the swimming pool and chlorine.


The most effective thing you can do all day is also the only free one: showering before getting in the water. I see people investing in protective products and skipping this step—it's like putting on sunscreen after you've already got a sunburn.
Dr. Julie PernetDoctor of Pharmacy & Certified Trichologist

Mistake #2: Forgetting that the scalp gets sun

Protect the lengths of your hair and forget about the part, which is exposed skin without any protection. Sunburn on the scalp causes redness, flaking, and then itching, and the subsequent flaking is often mistaken for dandruff. Hats, scarves, or covering hairstyles remain the only real protection: vegetable oils do not offer a comparable sun protection factor.

Error #3 : let the salt dry on your hair

Salt that crystallizes as it dries abrades the cuticle and irritates the scalp . Rinsing with clear water immediately after getting out of the water, before even lying down again, removes most of it—much more effectively than shampooing in the evening, applied six hours too late.

Mistake #4: brushing your hair on the beach

Brushing through tangled hair, laden with salt and sand, is like rubbing sandpaper on the hair fiber. This is the main cause of breakage in summer. Detangling should be done on damp , conditioner-treated hair, once you get home, starting at the ends.

Mistake #5: Going home without doing anything

These evening habits prevent most of the accumulated damage:

  • Rinse thoroughly with clean water before shampooing.
  • Laver at pH 5, including daily during the holidays
  • Apply a nourishing treatment to the lengths of the hair, never to the roots.
  • Air dry rather than using a hairdryer
  • Exfoliate the scalp once a week to remove salt and oxidized sebum.

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"Incredible! I didn't really believe it, but it's true: by taking care of the roots, the ends follow. My hair is shiny, nourished, and the application is super easy. Very, very good product."

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The protocol for repairing after the holidays

Despite everything, the end of summer leaves its mark. We exfoliate the scalp to remove oxidized sebum, salt, and sunscreen residue, we wash with a pH 5 shampoo containing antioxidants, and then we nourish the lengths to replenish the surface lipid film. This is what prevents arriving in autumn with already weakened hair.

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To remember

  • Wetting your hair before swimming greatly limits salt absorption.
  • The scalp is exposed skin: a hat is mandatory.
  • Dried salt abrades the cuticle: rinse immediately
  • Never brush dry hair laden with salt and sand

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F.A.Q

Should you wet your hair before swimming at the beach?
Yes, it's the most effective thing you can do all day. Fibers already saturated with fresh water absorb much less salt. Shower before every swim, and rinse again when you get out of the water.
How to protect your scalp from the sun at the beach?
Through mechanical protection: a wide-brimmed hat, a scarf, or a covering head covering. No vegetable oil provides an equivalent sun protection factor, and the parting is exposed skin that can get a real sunburn.
Do you need to wash your hair every day at the beach?
Yes, with a gentle shampoo at pH 5. Letting salt, sand, and oxidized sebum stagnate on the scalp promotes irritation and dandruff. Frequent washing doesn't damage hair; a harsh shampoo does.
Is it okay to brush your hair at the beach?
It's best to avoid it. Brushing dry, tangled hair laden with salt and sand causes significant breakage. Detangle once you get home, on damp hair coated with conditioner, starting at the ends.
How to repair your hair after a beach holiday?
By treating oxidation: exfoliating the scalp, washing at pH 5 with antioxidant agents, then nourishing the lengths to replenish the lipid film. Allow two to three weeks to regain suppleness.

Written by

Dr. Julie Pernet

Doctor of Pharmacy & Certified Trichologist. Doctor of Pharmacy and Trichologist, founder of the DermoPilaire MakeMyMask Laboratory. She develops skincare protocols focused on scalp health, based on microbiome science and pH balance.

Dr. Julie Pernet