As summer approaches, many people wonder how to protect their hair from the effects of chlorine. Among the most common tips, we often hear that you should wet your hair before entering the pool. But is this tip really effective or is it just a myth?
Chlorine can weaken the hair fiber, dry out the lengths, and make hair duller with repeated swimming. Fortunately, a few simple steps can limit its effects and preserve the health of your hair throughout the summer.
In this article, discover why it is recommended to wet your hair before swimming, how to reinforce this protection, and what are the best habits to adopt to durably protect your hair.
Why does chlorine damage hair?
The role of chlorine in swimming pools
Chlorine is used to disinfect water and limit the growth of bacteria. While essential for pool hygiene, it can have consequences for the hair fiber when exposed repeatedly.
Upon contact with hair, chlorine tends to:
- remove some of the natural oils present on the fiber;
- weaken the cuticle;
- increase dehydration;
- make hair rougher;
- promote frizz.
Curly, coily, kinky, or already sensitized hair is generally the most affected.
The effects of chlorine on hair
After several swims, it is common to observe:
- drier hair;
- a loss of suppleness;
- lengths that are difficult to detangle;
- more breakage;
- more fragile ends.
In the long term, repeated exposure to chlorine can alter the overall quality of the hair fiber.
Why wetting your hair before swimming is a good idea
A simple but effective principle
Hair works a bit like a sponge.
When dry, it quickly absorbs the water it is immersed in. Conversely, when it is already saturated with clean water, its absorption capacity is more limited.
This is why it is advisable to rinse your hair thoroughly under the shower before entering the pool.
This action helps to:
- reduce the absorption of chlorinated water;
- limit dryness;
- partially protect the hair fiber;
- better preserve natural hydration.
Even if this method does not offer total protection, it constitutes an effective first barrier.
Particularly useful protection for curly hair
Curly, coily, and kinky hair is naturally drier.
Their structure makes sebum distribution more difficult on the lengths, which exposes them more to external aggressions.
For these hair types, wetting the lengths before swimming is particularly recommended.
Can you better protect your hair before swimming?
Hair oil: complementary protection
Wetting your hair is a good first step, but it is possible to go further by applying a hair oil before swimming.
Oil acts as a protective film around the hair fiber.
It helps to:
- limit chlorine penetration;
- reduce moisture loss;
- preserve hair suppleness;
- protect the lengths from dryness.
Shaeri Hair Oil before swimming
Shaeri Hair Oil is particularly suitable for this use.
Composed of 99.04% natural ingredients and enriched with five complementary vegetable oils, it nourishes and protects the hair while preserving its softness.
Before swimming, a few drops on the lengths and ends are enough.
Its benefits before swimming:
- protects hair from chlorine;
- nourishes the hair fiber;
- limits frizz;
- helps maintain curl suppleness;
- reduces dryness of the lengths.
This use is also one of the recommended application tips for Shaeri Hair Oil.
Should you tie your hair up before swimming?
An often underestimated gesture
Tying your hair up before entering the water can also help protect it.
Tied hair:
- gets less tangled;
- rubs less against the shoulders;
- is less exposed to mechanical aggressions;
- better retains applied treatments.
A loose bun or a braid are generally good options.
Is a swimming cap useful?
A swimming cap remains the most effective protection against chlorine.
Even if it is never completely waterproof, it considerably limits contact between hair and chlorinated water.
For optimal protection:
- wet your hair;
- apply a few drops of oil;
- tie up the lengths;
- use a swimming cap.
This combination significantly reduces chlorine-related damage.
What to do after swimming?
Rinse hair immediately
After swimming, it is important to rinse your hair as quickly as possible.
This rinse helps to:
- remove chlorine residues;
- reduce the drying effect;
- preserve the balance of the hair fiber.
A simple rinse with clear water is already beneficial.
Use a gentle shampoo
After several swims, a gentle cleansing removes accumulated residues without damaging the hair.
Depending on your needs:
- Shaeri Nourishing Shampoo is suitable for dry, curly, or sensitized hair;
- Shaeri Purifying Shampoo is suitable for normal to oily hair.
The goal is to cleanse without stripping.
Restore hair hydration
After chlorine exposure, hair often needs to be nourished and hydrated.
Applying a mask or nourishing treatment helps to:
- restore suppleness;
- limit frizz;
- strengthen the hair fiber.
This step becomes particularly important during summer vacations when swimming is frequent.
Mistakes to avoid before swimming
Entering the water with completely dry hair
This is probably the most common mistake.
Dry hair absorbs more chlorinated water and is therefore more exposed to the drying effects of chlorine.
Neglecting the lengths
The ends are the oldest and most fragile parts of the hair.
They require special attention before and after swimming.
Waiting several hours before rinsing
The longer chlorine remains on the hair fiber, the greater its effects.
A quick rinse after swimming limits damage.
Frequently Asked Questions
Is it mandatory to wet your hair before swimming?
It's not mandatory, but it's highly recommended. Hair already soaked with clear water generally absorbs less chlorinated water.
Does oil really protect hair from chlorine?
Yes, it creates a protective barrier that limits direct contact between the hair fiber and chlorinated water.
Can you use oil on fine hair before swimming?
Yes, by applying a very small amount only to the lengths and ends.
Is colored hair more sensitive to chlorine?
Yes, chlorine can accelerate color alteration and further weaken the hair fiber.

