Dry Hair Causes & Treatments with Nutritive Range by Kerastase

Dry Hair: Causes, Treatments & Expert Care Guide

Dry hair is caused by a lack of moisture and essential nutrients in the hair fibre, often due to environmental exposure, frequent washing, heat styling, chemical treatments and an insufficiently nourishing haircare routine. Humidity, excessive heat, cold winds, pollution, colouring, straightening and repeated use of hot tools can all contribute to dry, rough or brittle-looking hair.

A dry hair treatment focuses on replenishing moisture and nutrients, improving softness and manageability, and protecting the fibre from further dryness. A consistent routine with a nourishing shampoo, conditioner or mask, leave-in treatment and heat protection can help improve the look and feel of dry hair over time.

In this Article

What Is Dry Hair?

What Causes Dry Hair?

Why Are My Hair Ends So Dry?

What Is Dry Hair Treatment?

How To Treat Dry Hair At Home?

Which Hair Masks Work Best For Dry Hair?

Best Products For Dry Hair By Hair Type

How Often Should You Use Dry Hair Treatments?

Pro Tips For Managing Dry Hair

Frequently Asked Questions

What Is Dry Hair?

Dry hair lacks sufficient moisture and natural oils to remain soft, smooth and manageable. When the fibre loses moisture and essential nutrients, the cuticle can become rougher, leaving hair feeling coarse, looking dull, and more prone to frizz, tangles, and breakage.

What Causes Dry Hair?

Common causes of dry hair include:

Environmental Exposure: Excessive heat, cold winds, humidity, pollution and sun exposure can affect the hair's moisture balance.
Heat Styling: Frequent blow-drying, straightening and curling can weaken the hair fibre and contribute to dryness and breakage.
Chemical Processing: Colouring, bleaching, straightening and other chemical services can leave the fibre more vulnerable to moisture loss.
Over-washing: Washing too frequently or using a cleanser that is not suited to your hair can leave it feeling stripped.
Lack of Nourishment: Hair that does not receive sufficient conditioning and nourishment can become rough, dry, and difficult to manage.
Friction And Mechanical Stress: Aggressive towel-drying, vigorous brushing and repeated friction can contribute to roughness and breakage.

Why Are My Hair Ends So Dry?

Hair ends are the oldest part of the fibre, so they have experienced more exposure to washing, styling, brushing, environmental stress and chemical treatments. This makes the ends particularly vulnerable to dryness, split ends and breakage.

What Is Dry Hair Treatment?

A dry hair treatment is a targeted product or routine designed to replenish moisture and nutrients, improve softness and manageability, and protect the fibre from everyday stress. Depending on your hair type, treatment can include a nourishing shampoo, conditioner, hair mask, overnight hair serum and heat-protective styling product.

For severely dry hair, combining several complementary products can provide more comprehensive care than relying on a single treatment.

How To Treat Dry Hair At Home?

Knowing how to treat dry hair starts with building a routine around your hair's specific needs.

Step 1: Choose A Nourishing Shampoo

Start with a shampoo formulated specifically for dry hair. Kérastase Nutritive Nourishing Shampoo is an ultra-nourishing shampoo for dry hair. Its formula contains Niacinamide, plant-based proteins and glycerin to support nourishment, strength and hydration. It delivers 85% immediate nutrition and 98% stronger hair* when used as part of the tested routine.
*Instrumental Test - Immediately after application of Bain Satin Riche, Masquintense & Nectar Thermique

Step 2: Add A Nourishing Conditioner Or Mask

Follow shampoo with a conditioner or mask to provide additional nourishment. Try the Kérastase Nutritive hair mask for dry, fine to medium hair that provides 85% immediate nutrition* and 98% stronger hair*. Apply it to towel-dried lengths and ends for 3-5 minutes before rinsing.
*Immediately after application of Bain Satin Riche, Masquintense & Nectar Thermique

Step 3: Use Richer Care For Thick, Dry Hair

If you have medium to thick dry hair, Kérastase Nutritive Riche Nourishing Mask provides more intensive conditioning. The rich formula of this ultra-nourishing hair mask for dry, medium to thick hair helps intensely hydrate the fibre, seal the cuticles to hold moisture and leave hair softer and shinier.

Step 4: Add an Overnight Serum

For additional nourishment between washes, Kérastase Nutritive 8H Magic Night Serum is designed as an overnight leave-in treatment for dry hair. The overnight hair serum works for 8 hours and provides 84% less frizz* while protecting against pillow friction.
*Instrumental Test Post Application Of 8H Magic Night Serum

Step 5: Protect Hair Before Heat Styling

Heat protection is an important part of any dry hair routine. Kérastase Nutritive Blow Dry Primer is an anti-frizz, heat-protecting leave-in primer for dry hair that protects against heat up to 230°C.

Which Hair Masks Work Best For Dry Hair?

The best hair mask for dry hair depends on your hair thickness.

For Fine To Medium Dry Hair

Choose Kérastase Nutritive Nourishing Mask. It contains plant-based proteins and Niacinamide and helps restore elasticity and manageability while protecting against chronic dryness. Apply it after shampooing and leave it on for 3-5 minutes.

For Medium To Thick Dry Hair

Choose Kérastase Nutritive Riche Nourishing Mask. Its ultra-concentrated formula contains nourishing lipids, plant-based proteins and Niacinamide. It intensely hydrates the fibre, helps seal cuticles and delivers a soft, shiny finish.

Best Products For Dry Hair By Hair Type

Hair Type	Recommended Kérastase Product	Key Ingredients/Technology	Key Benefit
Fine to medium, dry hair	Nutritive Nourishing Shampoo	Niacinamide, plant-based proteins, glycerin	Nourishes, hydrates and strengthens
Fine to medium, dry hair	Nutritive Nourishing Mask	Plant-based proteins, Niacinamide	85% immediate nutrition*; improves elasticity and manageability
Medium to thick, dry hair	Nutritive Riche Nourishing Mask	Nourishing lipids, plant-based proteins, Niacinamide	Intense hydration and moisture retention
Dry hair needing overnight care	Nutritive 8H Magic Night Serum	Anti-dryness polymers, essential nutrients	8-hour overnight nourishment; 84% less frizz*
Dry hair exposed to heat styling	Nutritive Blow Dry Primer	Heat-protecting technology	Heat protection up to 230°C

*Immediately after application of Bain Satin Riche, Masquintense & Nectar Thermique
*Instrumental Test Post Application Of 8H Magic Night Serum

How Often Should You Use Dry Hair Treatments?

The frequency depends on the product and your hair's condition.

Shampoo: Use as part of your regular wash routine according to your hair's cleansing needs. The product directions recommend applying to wet hair, lathering, rinsing and repeating.
Hair Mask: Apply after shampooing and leave on for 3-5 minutes before rinsing.
Serum: Use as an overnight leave-in treatment when your hair needs additional nourishment.
Blow Dry Primer: Apply before blow-drying or heat styling to protect dry hair from heat.

Pro Tips For Managing Dry Hair

1. Use Lukewarm Water

Very hot water can leave hair feeling drier. Use comfortably warm or lukewarm water when washing.

2. Be Gentle When Drying

Instead of aggressively rubbing wet hair with a towel, gently squeeze out excess water and pat the lengths dry.

3. Detangle Carefully

Use a suitable brush or wide-tooth comb and work gently through the lengths, particularly when hair is wet.

4. Limit Unnecessary Heat Styling

Frequent exposure to high heat can contribute to dryness and breakage. When heat styling is necessary, use a dedicated heat protectant suitable for your hair type.

5. Give Dry Ends Extra Attention

The ends are the oldest part of the hair fibre and often need additional conditioning. Apply masks and leave-in treatments primarily through the lengths and ends.

Dryness can affect any hair type, but the right routine can help improve the way dry hair looks and feels. Start by identifying the cause of dryness, then build a consistent routine around cleansing, nourishing, conditioning and heat protection.

For a targeted dry hair routine, the Kérastase Nutritive range offers options for different hair thicknesses and needs. So, without any further ado, browse through a wide range of Kérastase hair care products to keep dryness at bay. You can also head to the Kérastase Hair Quiz to understand what works best for your hair type and needs.