How to Repair Damaged Hair: 6 Stylist-Approved Tips

How to Repair Damaged Hair: 6 Stylist-Approved Tips

Whether it's from heat styling, colour treatments, chemical processing, or environmental stress, damaged hair is one of the most common concerns we hear about. The good news: with the right routine and the right products, you can restore your hair's health significantly — and prevent further damage going forward.

Here are six stylist-approved tips to treat and repair damaged hair.

How to Tell If Your Hair Is Damaged

Before diving into solutions, it helps to identify what you're dealing with. Damaged hair typically shows one or more of these signs:

  • Breakage — short, snapped strands that aren't new growth
  • Split ends — fraying at the tips that travels up the shaft if left untreated
  • Excessive frizz — a raised cuticle that won't lie flat
  • Dryness and brittleness — hair that snaps rather than stretches when pulled gently
  • Lack of shine — dull, lifeless hair that doesn't reflect light
  • Elasticity loss — wet hair that breaks instead of stretching

The more of these you're experiencing, the more intensive your repair routine needs to be.

1. Start With the Right Shampoo

The foundation of any repair routine is a sulphate-free shampoo that cleanses without stripping. Sulphates are harsh detergents found in many standard shampoos — they create a rich lather but remove the natural oils your damaged hair desperately needs.

Pair with the Wella Ultimate Repair Conditioner 500ml for a complete cleansing step that begins the repair process immediately.

2. Always Apply a Heat Protectant

Heat styling is the most common cause of hair damage — and the most preventable. Before using any heated tools, a heat protectant is non-negotiable. It creates a barrier between your hair and the heat source, significantly reducing moisture loss and cuticle damage.

Apply to damp hair before blow drying, and again before using straighteners or curling irons.

3. Treat Your Hair to a Weekly Mask

A weekly deep-conditioning mask is one of the most effective treatments for damaged hair. Unlike conditioner, which sits on the surface, a mask penetrates the hair shaft to restore moisture, rebuild structure, and improve elasticity.

Apply your mask to clean, damp hair, leave for the recommended time, and rinse thoroughly. For very damaged hair, use twice a week.

4. Keep on Top of Your Trims

Regular trims are the best defence against split ends. Once a split end forms, it will continue to travel up the hair shaft if left untreated — causing more breakage and making the damage worse over time. Aim for a trim every 6–8 weeks to keep ends healthy and prevent further deterioration.

This isn't about losing length — a small trim removes the damaged ends and stops the problem from spreading.

5. Turn Down the Heat

Beyond using a heat protectant, reducing the temperature on your styling tools makes a significant difference. Most hair types don't need the highest heat setting — and lower temperatures cause considerably less damage over time.

As a guide:

  • Fine or damaged hair: 130–160°C
  • Normal hair: 160–180°C
  • Thick or coarse hair: 180–200°C

If you're not sure, start lower and work up. The Wella Ultimate Repair 5-in-1 Protective Leave-In 95ml is an excellent finishing step that protects against heat, UV, and humidity while adding shine.

6. Switch to a Silk or Satin Pillowcase

It might sound surprising, but cotton pillowcases create friction that snags and breaks hair overnight — especially if your hair is already weakened. Silk or satin pillowcases are far more hair-friendly: they reduce friction, help retain moisture, and can make a noticeable difference to frizz and breakage over time.

Pair this with loose, low-tension hairstyles for sleeping (a loose braid or low bun) to further reduce overnight breakage.

The Wella Ultimate Repair System: A Complete Damage Repair Routine

For hair that needs serious repair, the Wella Ultimate Repair range offers a step-by-step professional system:

Used consistently, this system delivers visible results within 2–4 weeks.

Frequently Asked Questions

How long does it take to repair damaged hair?

It depends on the severity of the damage. Surface-level dryness and frizz can improve within a few washes with the right products. Structural damage (breakage, split ends, chemical damage) takes longer — typically 4–8 weeks of consistent treatment — and the most damaged sections may need to be trimmed away.

Can damaged hair be fully repaired?

The hair shaft itself cannot be permanently “healed” — it's not living tissue. However, the right products can significantly improve the appearance, texture, and strength of damaged hair by filling gaps in the cuticle and restoring moisture. New growth will be healthy if you address the root causes of damage.

What's the difference between a conditioner and a hair mask?

Conditioner is designed for daily use and works primarily on the surface of the hair to smooth the cuticle and add moisture. A hair mask is more concentrated, penetrates deeper, and is designed to be left on for longer — making it far more effective for repairing damage.

Is salon-size worth it for repair products?

Yes — if you're masking weekly and using a repair shampoo daily, a 500ml–1000ml size will last significantly longer and typically saves 15–20% versus standard sizes.

Shop Damage Repair Products at Bohairmia

Browse our full range of professional damage repair products — from sulphate-free shampoos to intensive masks and bond-repair treatments.

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